/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 16:22:13,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 16:22:13,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 16:22:13,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 16:22:13,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 16:22:13,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 16:22:13,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 16:22:13,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 16:22:13,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 16:22:13,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 16:22:13,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 16:22:14,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 16:22:14,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 16:22:14,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 16:22:14,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 16:22:14,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 16:22:14,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 16:22:14,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 16:22:14,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 16:22:14,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 16:22:14,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 16:22:14,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 16:22:14,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 16:22:14,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 16:22:14,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 16:22:14,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 16:22:14,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 16:22:14,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 16:22:14,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 16:22:14,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 16:22:14,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 16:22:14,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 16:22:14,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 16:22:14,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 16:22:14,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 16:22:14,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 16:22:14,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 16:22:14,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 16:22:14,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 16:22:14,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 16:22:14,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 16:22:14,044 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 16:22:14,084 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 16:22:14,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 16:22:14,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 16:22:14,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 16:22:14,086 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 16:22:14,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 16:22:14,087 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 16:22:14,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 16:22:14,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 16:22:14,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 16:22:14,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 16:22:14,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 16:22:14,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 16:22:14,090 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 16:22:14,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 16:22:14,090 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 16:22:14,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 16:22:14,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 16:22:14,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 16:22:14,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 16:22:14,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 16:22:14,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 16:22:14,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 16:22:14,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 16:22:14,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 16:22:14,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 16:22:14,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:14,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 16:22:14,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 16:22:14,095 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 16:22:14,425 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 16:22:14,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 16:22:14,445 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 16:22:14,447 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 16:22:14,447 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 16:22:14,449 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-07-20 16:22:14,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3225561a4/55d3fbf9e8bb4145b5843a22d8a5bdc5/FLAGf1aae7aa1 [2020-07-20 16:22:15,041 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 16:22:15,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-07-20 16:22:15,055 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3225561a4/55d3fbf9e8bb4145b5843a22d8a5bdc5/FLAGf1aae7aa1 [2020-07-20 16:22:15,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3225561a4/55d3fbf9e8bb4145b5843a22d8a5bdc5 [2020-07-20 16:22:15,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 16:22:15,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 16:22:15,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 16:22:15,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 16:22:15,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 16:22:15,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:22:15" (1/1) ... [2020-07-20 16:22:15,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58de0aa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:15, skipping insertion in model container [2020-07-20 16:22:15,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:22:15" (1/1) ... [2020-07-20 16:22:15,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 16:22:15,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 16:22:15,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:22:15,924 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 16:22:16,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:22:16,065 INFO L208 MainTranslator]: Completed translation [2020-07-20 16:22:16,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:16 WrapperNode [2020-07-20 16:22:16,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 16:22:16,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 16:22:16,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 16:22:16,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 16:22:16,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:16" (1/1) ... [2020-07-20 16:22:16,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:16" (1/1) ... [2020-07-20 16:22:16,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:16" (1/1) ... [2020-07-20 16:22:16,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:16" (1/1) ... [2020-07-20 16:22:16,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:16" (1/1) ... [2020-07-20 16:22:16,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:16" (1/1) ... [2020-07-20 16:22:16,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:16" (1/1) ... [2020-07-20 16:22:16,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 16:22:16,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 16:22:16,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 16:22:16,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 16:22:16,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 16:22:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 16:22:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 16:22:16,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 16:22:16,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 16:22:16,222 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 16:22:16,222 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 16:22:16,223 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 16:22:16,223 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 16:22:16,223 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 16:22:16,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 16:22:16,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 16:22:16,224 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 16:22:16,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 16:22:16,224 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-20 16:22:16,224 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-20 16:22:16,225 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 16:22:16,225 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 16:22:16,225 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 16:22:16,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 16:22:16,225 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 16:22:16,226 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 16:22:16,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 16:22:16,226 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 16:22:16,226 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 16:22:16,227 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 16:22:16,228 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 16:22:16,228 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 16:22:16,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 16:22:16,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 16:22:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 16:22:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 16:22:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 16:22:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 16:22:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-20 16:22:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 16:22:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 16:22:16,230 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 16:22:16,230 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 16:22:16,230 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 16:22:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 16:22:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 16:22:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 16:22:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 16:22:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 16:22:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 16:22:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 16:22:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 16:22:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 16:22:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 16:22:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 16:22:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 16:22:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 16:22:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-20 16:22:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-20 16:22:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-20 16:22:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 16:22:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 16:22:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 16:22:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 16:22:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 16:22:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 16:22:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 16:22:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 16:22:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 16:22:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 16:22:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 16:22:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 16:22:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 16:22:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 16:22:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 16:22:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 16:22:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 16:22:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 16:22:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 16:22:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 16:22:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 16:22:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 16:22:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 16:22:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 16:22:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 16:22:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 16:22:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 16:22:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 16:22:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 16:22:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 16:22:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 16:22:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 16:22:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 16:22:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 16:22:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 16:22:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 16:22:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 16:22:17,414 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 16:22:17,414 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 16:22:17,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:22:17 BoogieIcfgContainer [2020-07-20 16:22:17,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 16:22:17,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 16:22:17,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 16:22:17,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 16:22:17,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:22:15" (1/3) ... [2020-07-20 16:22:17,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169d818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:22:17, skipping insertion in model container [2020-07-20 16:22:17,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:16" (2/3) ... [2020-07-20 16:22:17,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169d818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:22:17, skipping insertion in model container [2020-07-20 16:22:17,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:22:17" (3/3) ... [2020-07-20 16:22:17,427 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2020-07-20 16:22:17,436 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 16:22:17,444 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 16:22:17,456 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 16:22:17,483 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 16:22:17,483 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 16:22:17,483 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 16:22:17,483 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 16:22:17,484 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 16:22:17,484 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 16:22:17,484 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 16:22:17,484 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 16:22:17,505 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-07-20 16:22:17,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 16:22:17,515 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:17,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:17,516 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:17,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:17,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1779053206, now seen corresponding path program 1 times [2020-07-20 16:22:17,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:17,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584816388] [2020-07-20 16:22:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:18,018 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:18,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:18,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 16:22:18,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:18,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:18,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584816388] [2020-07-20 16:22:18,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:18,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 16:22:18,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146181737] [2020-07-20 16:22:18,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 16:22:18,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:18,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 16:22:18,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:22:18,095 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 2 states. [2020-07-20 16:22:18,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:18,138 INFO L93 Difference]: Finished difference Result 236 states and 291 transitions. [2020-07-20 16:22:18,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 16:22:18,140 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 16:22:18,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:18,154 INFO L225 Difference]: With dead ends: 236 [2020-07-20 16:22:18,154 INFO L226 Difference]: Without dead ends: 118 [2020-07-20 16:22:18,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:22:18,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-20 16:22:18,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-07-20 16:22:18,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-07-20 16:22:18,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-07-20 16:22:18,218 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 46 [2020-07-20 16:22:18,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:18,219 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-07-20 16:22:18,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 16:22:18,219 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-07-20 16:22:18,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 16:22:18,223 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:18,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:18,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:18,437 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:18,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:18,438 INFO L82 PathProgramCache]: Analyzing trace with hash 83171531, now seen corresponding path program 1 times [2020-07-20 16:22:18,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:18,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463065002] [2020-07-20 16:22:18,440 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:18,830 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:18,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:18,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 16:22:18,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:18,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:18,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463065002] [2020-07-20 16:22:18,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:18,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:18,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854733672] [2020-07-20 16:22:18,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:18,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:18,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:18,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:18,881 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 3 states. [2020-07-20 16:22:18,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:18,901 INFO L93 Difference]: Finished difference Result 172 states and 199 transitions. [2020-07-20 16:22:18,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:18,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 16:22:18,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:18,905 INFO L225 Difference]: With dead ends: 172 [2020-07-20 16:22:18,905 INFO L226 Difference]: Without dead ends: 109 [2020-07-20 16:22:18,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:18,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-20 16:22:18,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-07-20 16:22:18,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-07-20 16:22:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-07-20 16:22:18,921 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 47 [2020-07-20 16:22:18,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:18,922 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-07-20 16:22:18,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:18,922 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-07-20 16:22:18,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 16:22:18,925 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:18,925 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] [2020-07-20 16:22:19,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:19,139 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:19,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:19,140 INFO L82 PathProgramCache]: Analyzing trace with hash -532729622, now seen corresponding path program 1 times [2020-07-20 16:22:19,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:19,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455331802] [2020-07-20 16:22:19,142 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:19,558 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:19,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:19,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 16:22:19,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:19,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:19,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455331802] [2020-07-20 16:22:19,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:19,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:19,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291583702] [2020-07-20 16:22:19,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:19,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:19,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:19,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:19,595 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 3 states. [2020-07-20 16:22:19,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:19,622 INFO L93 Difference]: Finished difference Result 275 states and 326 transitions. [2020-07-20 16:22:19,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:19,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-20 16:22:19,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:19,626 INFO L225 Difference]: With dead ends: 275 [2020-07-20 16:22:19,626 INFO L226 Difference]: Without dead ends: 190 [2020-07-20 16:22:19,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:19,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-07-20 16:22:19,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 178. [2020-07-20 16:22:19,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-07-20 16:22:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 209 transitions. [2020-07-20 16:22:19,667 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 209 transitions. Word has length 52 [2020-07-20 16:22:19,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:19,667 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 209 transitions. [2020-07-20 16:22:19,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:19,668 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 209 transitions. [2020-07-20 16:22:19,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 16:22:19,672 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:19,672 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] [2020-07-20 16:22:19,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:19,888 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:19,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:19,889 INFO L82 PathProgramCache]: Analyzing trace with hash 692647563, now seen corresponding path program 1 times [2020-07-20 16:22:19,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:19,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784213038] [2020-07-20 16:22:19,890 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:20,269 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:20,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:20,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:22:20,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:20,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:20,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:20,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784213038] [2020-07-20 16:22:20,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:20,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:20,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338229883] [2020-07-20 16:22:20,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:20,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:20,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:20,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:20,331 INFO L87 Difference]: Start difference. First operand 178 states and 209 transitions. Second operand 6 states. [2020-07-20 16:22:20,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:20,567 INFO L93 Difference]: Finished difference Result 436 states and 534 transitions. [2020-07-20 16:22:20,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:22:20,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-20 16:22:20,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:20,571 INFO L225 Difference]: With dead ends: 436 [2020-07-20 16:22:20,572 INFO L226 Difference]: Without dead ends: 282 [2020-07-20 16:22:20,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 16:22:20,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-07-20 16:22:20,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 274. [2020-07-20 16:22:20,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-07-20 16:22:20,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 327 transitions. [2020-07-20 16:22:20,604 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 327 transitions. Word has length 57 [2020-07-20 16:22:20,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:20,604 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 327 transitions. [2020-07-20 16:22:20,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:20,605 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 327 transitions. [2020-07-20 16:22:20,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-07-20 16:22:20,607 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:20,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:20,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:20,822 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:20,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:20,823 INFO L82 PathProgramCache]: Analyzing trace with hash 954578145, now seen corresponding path program 1 times [2020-07-20 16:22:20,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:20,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849355692] [2020-07-20 16:22:20,824 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:21,007 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 16:22:21,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:21,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 16:22:21,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:21,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:21,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:21,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849355692] [2020-07-20 16:22:21,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:21,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 16:22:21,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869128313] [2020-07-20 16:22:21,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 16:22:21,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:21,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 16:22:21,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:22:21,041 INFO L87 Difference]: Start difference. First operand 274 states and 327 transitions. Second operand 5 states. [2020-07-20 16:22:21,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:21,067 INFO L93 Difference]: Finished difference Result 538 states and 664 transitions. [2020-07-20 16:22:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 16:22:21,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-07-20 16:22:21,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:21,071 INFO L225 Difference]: With dead ends: 538 [2020-07-20 16:22:21,071 INFO L226 Difference]: Without dead ends: 288 [2020-07-20 16:22:21,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:22:21,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-07-20 16:22:21,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 282. [2020-07-20 16:22:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-07-20 16:22:21,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 335 transitions. [2020-07-20 16:22:21,098 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 335 transitions. Word has length 75 [2020-07-20 16:22:21,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:21,099 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 335 transitions. [2020-07-20 16:22:21,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 16:22:21,099 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 335 transitions. [2020-07-20 16:22:21,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-07-20 16:22:21,101 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:21,102 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] [2020-07-20 16:22:21,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:21,315 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:21,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:21,316 INFO L82 PathProgramCache]: Analyzing trace with hash 445105055, now seen corresponding path program 1 times [2020-07-20 16:22:21,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:21,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139187245] [2020-07-20 16:22:21,318 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:21,636 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:21,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:21,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 16:22:21,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:21,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:21,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:21,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139187245] [2020-07-20 16:22:21,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:21,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:21,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168921076] [2020-07-20 16:22:21,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:21,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:21,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:21,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:21,678 INFO L87 Difference]: Start difference. First operand 282 states and 335 transitions. Second operand 3 states. [2020-07-20 16:22:21,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:21,722 INFO L93 Difference]: Finished difference Result 774 states and 985 transitions. [2020-07-20 16:22:21,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:21,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-07-20 16:22:21,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:21,729 INFO L225 Difference]: With dead ends: 774 [2020-07-20 16:22:21,730 INFO L226 Difference]: Without dead ends: 516 [2020-07-20 16:22:21,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:21,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-07-20 16:22:21,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 513. [2020-07-20 16:22:21,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-07-20 16:22:21,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 638 transitions. [2020-07-20 16:22:21,793 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 638 transitions. Word has length 75 [2020-07-20 16:22:21,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:21,794 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 638 transitions. [2020-07-20 16:22:21,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:21,794 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 638 transitions. [2020-07-20 16:22:21,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 16:22:21,798 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:21,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:21,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:22,000 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:22,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:22,002 INFO L82 PathProgramCache]: Analyzing trace with hash 357740200, now seen corresponding path program 1 times [2020-07-20 16:22:22,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:22,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748511572] [2020-07-20 16:22:22,003 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:22,386 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:22,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:22,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 16:22:22,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:22,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:22,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748511572] [2020-07-20 16:22:22,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:22,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:22,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694379542] [2020-07-20 16:22:22,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:22,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:22,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:22,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:22,442 INFO L87 Difference]: Start difference. First operand 513 states and 638 transitions. Second operand 6 states. [2020-07-20 16:22:23,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:23,333 INFO L93 Difference]: Finished difference Result 1724 states and 2329 transitions. [2020-07-20 16:22:23,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 16:22:23,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-07-20 16:22:23,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:23,347 INFO L225 Difference]: With dead ends: 1724 [2020-07-20 16:22:23,350 INFO L226 Difference]: Without dead ends: 1235 [2020-07-20 16:22:23,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-20 16:22:23,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2020-07-20 16:22:23,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1125. [2020-07-20 16:22:23,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2020-07-20 16:22:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1459 transitions. [2020-07-20 16:22:23,441 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1459 transitions. Word has length 79 [2020-07-20 16:22:23,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:23,443 INFO L479 AbstractCegarLoop]: Abstraction has 1125 states and 1459 transitions. [2020-07-20 16:22:23,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:23,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1459 transitions. [2020-07-20 16:22:23,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-07-20 16:22:23,450 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:23,450 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] [2020-07-20 16:22:23,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:23,656 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:23,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:23,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1330285310, now seen corresponding path program 1 times [2020-07-20 16:22:23,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:23,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691602283] [2020-07-20 16:22:23,659 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:24,079 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:24,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:24,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 16:22:24,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:24,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:24,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691602283] [2020-07-20 16:22:24,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:24,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:24,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596737474] [2020-07-20 16:22:24,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:24,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:24,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:24,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:24,135 INFO L87 Difference]: Start difference. First operand 1125 states and 1459 transitions. Second operand 6 states. [2020-07-20 16:22:24,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:24,418 INFO L93 Difference]: Finished difference Result 3252 states and 4423 transitions. [2020-07-20 16:22:24,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:22:24,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-07-20 16:22:24,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:24,433 INFO L225 Difference]: With dead ends: 3252 [2020-07-20 16:22:24,434 INFO L226 Difference]: Without dead ends: 2151 [2020-07-20 16:22:24,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 16:22:24,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2020-07-20 16:22:24,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 2115. [2020-07-20 16:22:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2115 states. [2020-07-20 16:22:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 2756 transitions. [2020-07-20 16:22:24,592 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 2756 transitions. Word has length 75 [2020-07-20 16:22:24,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:24,592 INFO L479 AbstractCegarLoop]: Abstraction has 2115 states and 2756 transitions. [2020-07-20 16:22:24,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:24,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 2756 transitions. [2020-07-20 16:22:24,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 16:22:24,596 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:24,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:24,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:24,812 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:24,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:24,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2136122490, now seen corresponding path program 1 times [2020-07-20 16:22:24,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:24,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180619294] [2020-07-20 16:22:24,814 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:25,211 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:25,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:25,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:22:25,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:25,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:25,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:25,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180619294] [2020-07-20 16:22:25,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:25,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:25,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119111978] [2020-07-20 16:22:25,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:25,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:25,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:25,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:25,246 INFO L87 Difference]: Start difference. First operand 2115 states and 2756 transitions. Second operand 6 states. [2020-07-20 16:22:25,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:25,360 INFO L93 Difference]: Finished difference Result 4246 states and 5628 transitions. [2020-07-20 16:22:25,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 16:22:25,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-07-20 16:22:25,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:25,377 INFO L225 Difference]: With dead ends: 4246 [2020-07-20 16:22:25,378 INFO L226 Difference]: Without dead ends: 2155 [2020-07-20 16:22:25,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 16:22:25,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2020-07-20 16:22:25,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2155. [2020-07-20 16:22:25,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2155 states. [2020-07-20 16:22:25,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2804 transitions. [2020-07-20 16:22:25,615 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2804 transitions. Word has length 79 [2020-07-20 16:22:25,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:25,616 INFO L479 AbstractCegarLoop]: Abstraction has 2155 states and 2804 transitions. [2020-07-20 16:22:25,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:25,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2804 transitions. [2020-07-20 16:22:25,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 16:22:25,621 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:25,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:25,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:25,837 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:25,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:25,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1649371716, now seen corresponding path program 1 times [2020-07-20 16:22:25,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:25,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117983563] [2020-07-20 16:22:25,839 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:26,048 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 16:22:26,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:26,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 16:22:26,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:26,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:26,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117983563] [2020-07-20 16:22:26,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:26,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 16:22:26,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392344222] [2020-07-20 16:22:26,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 16:22:26,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:26,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 16:22:26,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:22:26,084 INFO L87 Difference]: Start difference. First operand 2155 states and 2804 transitions. Second operand 5 states. [2020-07-20 16:22:26,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:26,178 INFO L93 Difference]: Finished difference Result 4038 states and 5384 transitions. [2020-07-20 16:22:26,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 16:22:26,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-07-20 16:22:26,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:26,194 INFO L225 Difference]: With dead ends: 4038 [2020-07-20 16:22:26,195 INFO L226 Difference]: Without dead ends: 1907 [2020-07-20 16:22:26,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:22:26,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2020-07-20 16:22:26,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1907. [2020-07-20 16:22:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-07-20 16:22:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2428 transitions. [2020-07-20 16:22:26,315 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2428 transitions. Word has length 79 [2020-07-20 16:22:26,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:26,316 INFO L479 AbstractCegarLoop]: Abstraction has 1907 states and 2428 transitions. [2020-07-20 16:22:26,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 16:22:26,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2428 transitions. [2020-07-20 16:22:26,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-20 16:22:26,319 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:26,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:26,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:26,536 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:26,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:26,536 INFO L82 PathProgramCache]: Analyzing trace with hash -453271351, now seen corresponding path program 1 times [2020-07-20 16:22:26,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:26,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807358838] [2020-07-20 16:22:26,537 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:27,059 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:27,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 16:22:27,060 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:22:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 16:22:27,155 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:22:27,422 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 16:22:27,422 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 16:22:27,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:27,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:22:27 BoogieIcfgContainer [2020-07-20 16:22:27,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 16:22:27,841 INFO L168 Benchmark]: Toolchain (without parser) took 12472.01 ms. Allocated memory was 147.8 MB in the beginning and 321.4 MB in the end (delta: 173.5 MB). Free memory was 104.2 MB in the beginning and 214.1 MB in the end (delta: -109.9 MB). Peak memory consumption was 63.7 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:27,843 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 124.0 MB in the beginning and 123.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 16:22:27,845 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.11 ms. Allocated memory was 147.8 MB in the beginning and 207.1 MB in the end (delta: 59.2 MB). Free memory was 103.8 MB in the beginning and 175.4 MB in the end (delta: -71.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:27,847 INFO L168 Benchmark]: Boogie Preprocessor took 89.61 ms. Allocated memory is still 207.1 MB. Free memory was 175.4 MB in the beginning and 171.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:27,853 INFO L168 Benchmark]: RCFGBuilder took 1263.09 ms. Allocated memory was 207.1 MB in the beginning and 232.8 MB in the end (delta: 25.7 MB). Free memory was 171.5 MB in the beginning and 192.0 MB in the end (delta: -20.4 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:27,854 INFO L168 Benchmark]: TraceAbstraction took 10417.77 ms. Allocated memory was 232.8 MB in the beginning and 321.4 MB in the end (delta: 88.6 MB). Free memory was 190.6 MB in the beginning and 214.1 MB in the end (delta: -23.4 MB). Peak memory consumption was 65.2 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:27,861 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 124.0 MB in the beginning and 123.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 696.11 ms. Allocated memory was 147.8 MB in the beginning and 207.1 MB in the end (delta: 59.2 MB). Free memory was 103.8 MB in the beginning and 175.4 MB in the end (delta: -71.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.61 ms. Allocated memory is still 207.1 MB. Free memory was 175.4 MB in the beginning and 171.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1263.09 ms. Allocated memory was 207.1 MB in the beginning and 232.8 MB in the end (delta: 25.7 MB). Free memory was 171.5 MB in the beginning and 192.0 MB in the end (delta: -20.4 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10417.77 ms. Allocated memory was 232.8 MB in the beginning and 321.4 MB in the end (delta: 88.6 MB). Free memory was 190.6 MB in the beginning and 214.1 MB in the end (delta: -23.4 MB). Peak memory consumption was 65.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L239] int waterLevel = 1; [L240] int methaneLevelCritical = 0; [L610] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L833] int cleanupTimeShifts = 4; VAL [\old(cleanupTimeShifts)=57, \old(head)=99, \old(head)=63, \old(methaneLevelCritical)=70, \old(pumpRunning)=33, \old(systemActive)=95, \old(waterLevel)=100, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L906] int retValue_acc ; [L907] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L911] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L912] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L913] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L432] int retValue_acc ; [L435] retValue_acc = 1 [L436] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L913] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L913] tmp = valid_product() [L915] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L917] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L918] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L900] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L344] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L346] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L356] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L257] COND TRUE waterLevel < 2 [L258] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L356] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=-1, waterLevel=2] [L366] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L269] COND FALSE !(\read(methaneLevelCritical)) [L272] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L366] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=-1, waterLevel=2] [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND FALSE !(\read(tmp___2)) [L380] tmp___1 = __VERIFIER_nondet_int() [L382] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L391] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L68] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L75] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L77] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L97] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L100] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L102] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L194] int retValue_acc ; [L195] int tmp ; [L196] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L200] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L319] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L322] COND FALSE !(waterLevel < 2) [L326] retValue_acc = 0 [L327] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L200] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L200] tmp = isHighWaterSensorDry() [L202] COND FALSE !(\read(tmp)) [L205] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L207] retValue_acc = tmp___0 [L208] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L102] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L102] tmp = isHighWaterLevel() [L104] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L106] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L125] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L106] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L77] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L83] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L808] int tmp ; [L809] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L813] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L278] int retValue_acc ; [L281] retValue_acc = methaneLevelCritical [L282] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L813] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L813] tmp = isMethaneLevelCritical() [L815] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L817] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L149] int retValue_acc ; [L152] retValue_acc = pumpRunning [L153] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L817] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L817] tmp___0 = isPumpRunning() [L819] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L821] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L44] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.1s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1400 SDtfs, 628 SDslu, 2484 SDs, 0 SdLazy, 671 SolverSat, 185 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 662 GetRequests, 627 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2155occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 175 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 747 NumberOfCodeBlocks, 574 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 654 ConstructedInterpolants, 0 QuantifiedInterpolants, 76250 SizeOfPredicates, 25 NumberOfNonLiveVariables, 6075 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...