/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 NOT_INCREMENTALLY -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 [2020-07-21 10:35:13,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 10:35:13,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 10:35:13,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 10:35:13,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 10:35:13,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 10:35:13,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 10:35:13,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 10:35:14,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 10:35:14,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 10:35:14,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 10:35:14,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 10:35:14,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 10:35:14,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 10:35:14,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 10:35:14,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 10:35:14,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 10:35:14,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 10:35:14,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 10:35:14,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 10:35:14,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 10:35:14,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 10:35:14,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 10:35:14,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 10:35:14,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 10:35:14,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 10:35:14,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 10:35:14,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 10:35:14,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 10:35:14,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 10:35:14,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 10:35:14,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 10:35:14,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 10:35:14,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 10:35:14,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 10:35:14,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 10:35:14,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 10:35:14,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 10:35:14,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 10:35:14,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 10:35:14,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 10:35:14,035 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 [2020-07-21 10:35:14,059 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 10:35:14,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 10:35:14,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 10:35:14,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 10:35:14,061 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 10:35:14,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 10:35:14,062 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 10:35:14,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 10:35:14,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 10:35:14,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 10:35:14,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 10:35:14,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 10:35:14,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 10:35:14,064 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 10:35:14,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 10:35:14,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 10:35:14,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 10:35:14,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 10:35:14,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 10:35:14,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 10:35:14,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 10:35:14,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 10:35:14,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 10:35:14,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 10:35:14,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 10:35:14,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 10:35:14,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:14,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 10:35:14,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 10:35:14,067 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 -> NOT_INCREMENTALLY [2020-07-21 10:35:14,353 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 10:35:14,371 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 10:35:14,375 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 10:35:14,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 10:35:14,380 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 10:35:14,381 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-07-21 10:35:14,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fb8232fc/d4760dd7124e49c3a318c4037a72932f/FLAG3c5e5109f [2020-07-21 10:35:14,973 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 10:35:14,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-07-21 10:35:14,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fb8232fc/d4760dd7124e49c3a318c4037a72932f/FLAG3c5e5109f [2020-07-21 10:35:15,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fb8232fc/d4760dd7124e49c3a318c4037a72932f [2020-07-21 10:35:15,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 10:35:15,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 10:35:15,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 10:35:15,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 10:35:15,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 10:35:15,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:35:15" (1/1) ... [2020-07-21 10:35:15,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f03423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:15, skipping insertion in model container [2020-07-21 10:35:15,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:35:15" (1/1) ... [2020-07-21 10:35:15,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 10:35:15,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 10:35:15,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:35:15,876 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 10:35:15,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:35:16,017 INFO L208 MainTranslator]: Completed translation [2020-07-21 10:35:16,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:16 WrapperNode [2020-07-21 10:35:16,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 10:35:16,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 10:35:16,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 10:35:16,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 10:35:16,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:16" (1/1) ... [2020-07-21 10:35:16,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:16" (1/1) ... [2020-07-21 10:35:16,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:16" (1/1) ... [2020-07-21 10:35:16,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:16" (1/1) ... [2020-07-21 10:35:16,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:16" (1/1) ... [2020-07-21 10:35:16,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:16" (1/1) ... [2020-07-21 10:35:16,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:16" (1/1) ... [2020-07-21 10:35:16,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 10:35:16,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 10:35:16,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 10:35:16,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 10:35:16,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:16" (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 [2020-07-21 10:35:16,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 10:35:16,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 10:35:16,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 10:35:16,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 10:35:16,188 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 10:35:16,188 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 10:35:16,188 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 10:35:16,188 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 10:35:16,188 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 10:35:16,188 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 10:35:16,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 10:35:16,189 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 10:35:16,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 10:35:16,189 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-21 10:35:16,189 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-21 10:35:16,189 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 10:35:16,190 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 10:35:16,190 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 10:35:16,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 10:35:16,190 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 10:35:16,190 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 10:35:16,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 10:35:16,190 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 10:35:16,191 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 10:35:16,191 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 10:35:16,191 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 10:35:16,191 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 10:35:16,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 10:35:16,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 10:35:16,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 10:35:16,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 10:35:16,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 10:35:16,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 10:35:16,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-21 10:35:16,192 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 10:35:16,192 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 10:35:16,193 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 10:35:16,193 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 10:35:16,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 10:35:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 10:35:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 10:35:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 10:35:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 10:35:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 10:35:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 10:35:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 10:35:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 10:35:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 10:35:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 10:35:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 10:35:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 10:35:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 10:35:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-21 10:35:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-21 10:35:16,196 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-21 10:35:16,196 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 10:35:16,196 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 10:35:16,196 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 10:35:16,196 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 10:35:16,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 10:35:16,197 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 10:35:16,197 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 10:35:16,197 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 10:35:16,197 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 10:35:16,197 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 10:35:16,197 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 10:35:16,198 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 10:35:16,198 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 10:35:16,198 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 10:35:16,198 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 10:35:16,198 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 10:35:16,198 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 10:35:16,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 10:35:16,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 10:35:16,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 10:35:16,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 10:35:16,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 10:35:16,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 10:35:16,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 10:35:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 10:35:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 10:35:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 10:35:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 10:35:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 10:35:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 10:35:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 10:35:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 10:35:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 10:35:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 10:35:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 10:35:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 10:35:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 10:35:17,280 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 10:35:17,280 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 10:35:17,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:35:17 BoogieIcfgContainer [2020-07-21 10:35:17,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 10:35:17,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 10:35:17,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 10:35:17,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 10:35:17,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:35:15" (1/3) ... [2020-07-21 10:35:17,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4edeb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:35:17, skipping insertion in model container [2020-07-21 10:35:17,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:16" (2/3) ... [2020-07-21 10:35:17,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4edeb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:35:17, skipping insertion in model container [2020-07-21 10:35:17,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:35:17" (3/3) ... [2020-07-21 10:35:17,293 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2020-07-21 10:35:17,303 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 10:35:17,311 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 10:35:17,325 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 10:35:17,349 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 10:35:17,350 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 10:35:17,350 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 10:35:17,350 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 10:35:17,350 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 10:35:17,350 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 10:35:17,351 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 10:35:17,351 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 10:35:17,373 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-07-21 10:35:17,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 10:35:17,381 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:17,382 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] [2020-07-21 10:35:17,383 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:17,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:17,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1779053206, now seen corresponding path program 1 times [2020-07-21 10:35:17,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:17,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136991017] [2020-07-21 10:35:17,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-21 10:35:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:17,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 10:35:17,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:17,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:35:17,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:17,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136991017] [2020-07-21 10:35:17,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:17,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 10:35:17,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398921785] [2020-07-21 10:35:17,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 10:35:17,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:17,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 10:35:17,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 10:35:17,698 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 2 states. [2020-07-21 10:35:17,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:17,745 INFO L93 Difference]: Finished difference Result 236 states and 291 transitions. [2020-07-21 10:35:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 10:35:17,747 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 10:35:17,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:17,770 INFO L225 Difference]: With dead ends: 236 [2020-07-21 10:35:17,770 INFO L226 Difference]: Without dead ends: 118 [2020-07-21 10:35:17,780 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 [2020-07-21 10:35:17,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-21 10:35:17,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-07-21 10:35:17,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-07-21 10:35:17,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-07-21 10:35:17,885 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 46 [2020-07-21 10:35:17,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:17,886 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-07-21 10:35:17,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 10:35:17,886 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-07-21 10:35:17,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 10:35:17,894 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:17,894 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] [2020-07-21 10:35:18,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:18,108 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:18,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:18,109 INFO L82 PathProgramCache]: Analyzing trace with hash 83171531, now seen corresponding path program 1 times [2020-07-21 10:35:18,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:18,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377532844] [2020-07-21 10:35:18,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-21 10:35:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:18,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 10:35:18,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:18,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:35:18,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:18,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377532844] [2020-07-21 10:35:18,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:18,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 10:35:18,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135583922] [2020-07-21 10:35:18,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 10:35:18,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:18,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 10:35:18,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:35:18,386 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 3 states. [2020-07-21 10:35:18,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:18,408 INFO L93 Difference]: Finished difference Result 172 states and 199 transitions. [2020-07-21 10:35:18,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 10:35:18,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 10:35:18,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:18,434 INFO L225 Difference]: With dead ends: 172 [2020-07-21 10:35:18,434 INFO L226 Difference]: Without dead ends: 109 [2020-07-21 10:35:18,436 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 [2020-07-21 10:35:18,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-21 10:35:18,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-07-21 10:35:18,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-07-21 10:35:18,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-07-21 10:35:18,465 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 47 [2020-07-21 10:35:18,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:18,465 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-07-21 10:35:18,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 10:35:18,467 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-07-21 10:35:18,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-21 10:35:18,471 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:18,471 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] [2020-07-21 10:35:18,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:18,687 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:18,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:18,688 INFO L82 PathProgramCache]: Analyzing trace with hash -532729622, now seen corresponding path program 1 times [2020-07-21 10:35:18,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:18,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080544750] [2020-07-21 10:35:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-21 10:35:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:18,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 10:35:18,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:35:18,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:18,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080544750] [2020-07-21 10:35:18,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:18,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 10:35:18,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852770536] [2020-07-21 10:35:18,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 10:35:18,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:18,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 10:35:18,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:35:18,900 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 3 states. [2020-07-21 10:35:18,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:18,933 INFO L93 Difference]: Finished difference Result 275 states and 326 transitions. [2020-07-21 10:35:18,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 10:35:18,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-21 10:35:18,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:18,937 INFO L225 Difference]: With dead ends: 275 [2020-07-21 10:35:18,937 INFO L226 Difference]: Without dead ends: 190 [2020-07-21 10:35:18,938 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 [2020-07-21 10:35:18,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-07-21 10:35:18,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 178. [2020-07-21 10:35:18,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-07-21 10:35:18,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 209 transitions. [2020-07-21 10:35:18,960 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 209 transitions. Word has length 52 [2020-07-21 10:35:18,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:18,961 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 209 transitions. [2020-07-21 10:35:18,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 10:35:18,961 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 209 transitions. [2020-07-21 10:35:18,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 10:35:18,964 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:18,964 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] [2020-07-21 10:35:19,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:19,178 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:19,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:19,179 INFO L82 PathProgramCache]: Analyzing trace with hash 692647563, now seen corresponding path program 1 times [2020-07-21 10:35:19,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:19,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336671489] [2020-07-21 10:35:19,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-21 10:35:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:19,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 10:35:19,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:35:19,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:19,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336671489] [2020-07-21 10:35:19,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:19,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 10:35:19,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385677366] [2020-07-21 10:35:19,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 10:35:19,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:19,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 10:35:19,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 10:35:19,476 INFO L87 Difference]: Start difference. First operand 178 states and 209 transitions. Second operand 6 states. [2020-07-21 10:35:19,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:19,795 INFO L93 Difference]: Finished difference Result 436 states and 534 transitions. [2020-07-21 10:35:19,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 10:35:19,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-21 10:35:19,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:19,806 INFO L225 Difference]: With dead ends: 436 [2020-07-21 10:35:19,806 INFO L226 Difference]: Without dead ends: 282 [2020-07-21 10:35:19,811 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 [2020-07-21 10:35:19,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-07-21 10:35:19,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 274. [2020-07-21 10:35:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-07-21 10:35:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 327 transitions. [2020-07-21 10:35:19,866 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 327 transitions. Word has length 57 [2020-07-21 10:35:19,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:19,867 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 327 transitions. [2020-07-21 10:35:19,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 10:35:19,867 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 327 transitions. [2020-07-21 10:35:19,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-07-21 10:35:19,875 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:19,876 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] [2020-07-21 10:35:20,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:20,091 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:20,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:20,092 INFO L82 PathProgramCache]: Analyzing trace with hash 954578145, now seen corresponding path program 1 times [2020-07-21 10:35:20,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:20,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200566416] [2020-07-21 10:35:20,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-21 10:35:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:20,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 10:35:20,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:20,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:35:20,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:20,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200566416] [2020-07-21 10:35:20,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:20,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 10:35:20,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275431965] [2020-07-21 10:35:20,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 10:35:20,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:20,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 10:35:20,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:35:20,299 INFO L87 Difference]: Start difference. First operand 274 states and 327 transitions. Second operand 3 states. [2020-07-21 10:35:20,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:20,343 INFO L93 Difference]: Finished difference Result 766 states and 979 transitions. [2020-07-21 10:35:20,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 10:35:20,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-07-21 10:35:20,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:20,355 INFO L225 Difference]: With dead ends: 766 [2020-07-21 10:35:20,355 INFO L226 Difference]: Without dead ends: 516 [2020-07-21 10:35:20,357 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 [2020-07-21 10:35:20,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-07-21 10:35:20,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 513. [2020-07-21 10:35:20,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-07-21 10:35:20,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 640 transitions. [2020-07-21 10:35:20,418 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 640 transitions. Word has length 75 [2020-07-21 10:35:20,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:20,418 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 640 transitions. [2020-07-21 10:35:20,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 10:35:20,419 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 640 transitions. [2020-07-21 10:35:20,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 10:35:20,421 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:20,421 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] [2020-07-21 10:35:20,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:20,637 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:20,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:20,638 INFO L82 PathProgramCache]: Analyzing trace with hash 357740200, now seen corresponding path program 1 times [2020-07-21 10:35:20,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:20,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6103662] [2020-07-21 10:35:20,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-21 10:35:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:20,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 10:35:20,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:35:20,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:20,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6103662] [2020-07-21 10:35:20,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:20,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 10:35:20,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923408803] [2020-07-21 10:35:20,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 10:35:20,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:20,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 10:35:20,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 10:35:20,881 INFO L87 Difference]: Start difference. First operand 513 states and 640 transitions. Second operand 6 states. [2020-07-21 10:35:21,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:21,829 INFO L93 Difference]: Finished difference Result 1724 states and 2333 transitions. [2020-07-21 10:35:21,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 10:35:21,830 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-07-21 10:35:21,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:21,841 INFO L225 Difference]: With dead ends: 1724 [2020-07-21 10:35:21,842 INFO L226 Difference]: Without dead ends: 1235 [2020-07-21 10:35:21,844 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 [2020-07-21 10:35:21,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2020-07-21 10:35:21,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1125. [2020-07-21 10:35:21,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2020-07-21 10:35:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1461 transitions. [2020-07-21 10:35:21,947 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1461 transitions. Word has length 79 [2020-07-21 10:35:21,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:21,947 INFO L479 AbstractCegarLoop]: Abstraction has 1125 states and 1461 transitions. [2020-07-21 10:35:21,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 10:35:21,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1461 transitions. [2020-07-21 10:35:21,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-07-21 10:35:21,951 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:21,952 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] [2020-07-21 10:35:22,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:22,169 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:22,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:22,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1330285310, now seen corresponding path program 1 times [2020-07-21 10:35:22,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:22,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261525059] [2020-07-21 10:35:22,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-21 10:35:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:22,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 10:35:22,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:35:22,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:22,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261525059] [2020-07-21 10:35:22,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:22,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 10:35:22,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793915450] [2020-07-21 10:35:22,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 10:35:22,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:22,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 10:35:22,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 10:35:22,404 INFO L87 Difference]: Start difference. First operand 1125 states and 1461 transitions. Second operand 6 states. [2020-07-21 10:35:22,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:22,648 INFO L93 Difference]: Finished difference Result 3252 states and 4429 transitions. [2020-07-21 10:35:22,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 10:35:22,649 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-07-21 10:35:22,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:22,663 INFO L225 Difference]: With dead ends: 3252 [2020-07-21 10:35:22,664 INFO L226 Difference]: Without dead ends: 2151 [2020-07-21 10:35:22,669 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 [2020-07-21 10:35:22,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2020-07-21 10:35:22,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 2115. [2020-07-21 10:35:22,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2115 states. [2020-07-21 10:35:22,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 2760 transitions. [2020-07-21 10:35:22,792 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 2760 transitions. Word has length 75 [2020-07-21 10:35:22,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:22,793 INFO L479 AbstractCegarLoop]: Abstraction has 2115 states and 2760 transitions. [2020-07-21 10:35:22,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 10:35:22,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 2760 transitions. [2020-07-21 10:35:22,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 10:35:22,796 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:22,796 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] [2020-07-21 10:35:23,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:23,010 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:23,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:23,010 INFO L82 PathProgramCache]: Analyzing trace with hash -2136122490, now seen corresponding path program 1 times [2020-07-21 10:35:23,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:23,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373213548] [2020-07-21 10:35:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-21 10:35:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:23,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 10:35:23,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:23,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:35:23,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:23,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373213548] [2020-07-21 10:35:23,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:23,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 10:35:23,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597626103] [2020-07-21 10:35:23,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 10:35:23,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:23,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 10:35:23,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 10:35:23,254 INFO L87 Difference]: Start difference. First operand 2115 states and 2760 transitions. Second operand 6 states. [2020-07-21 10:35:23,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:23,359 INFO L93 Difference]: Finished difference Result 4266 states and 5724 transitions. [2020-07-21 10:35:23,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 10:35:23,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-07-21 10:35:23,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:23,373 INFO L225 Difference]: With dead ends: 4266 [2020-07-21 10:35:23,374 INFO L226 Difference]: Without dead ends: 2175 [2020-07-21 10:35:23,380 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 [2020-07-21 10:35:23,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2020-07-21 10:35:23,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 2175. [2020-07-21 10:35:23,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2175 states. [2020-07-21 10:35:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 2836 transitions. [2020-07-21 10:35:23,490 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 2836 transitions. Word has length 79 [2020-07-21 10:35:23,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:23,491 INFO L479 AbstractCegarLoop]: Abstraction has 2175 states and 2836 transitions. [2020-07-21 10:35:23,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 10:35:23,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 2836 transitions. [2020-07-21 10:35:23,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 10:35:23,493 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:23,493 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] [2020-07-21 10:35:23,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:23,709 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:23,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:23,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1649371716, now seen corresponding path program 1 times [2020-07-21 10:35:23,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:23,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542194269] [2020-07-21 10:35:23,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-21 10:35:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:23,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 10:35:23,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:35:23,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:23,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542194269] [2020-07-21 10:35:23,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:23,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 10:35:23,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744531479] [2020-07-21 10:35:23,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 10:35:23,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:23,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 10:35:23,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 10:35:23,906 INFO L87 Difference]: Start difference. First operand 2175 states and 2836 transitions. Second operand 5 states. [2020-07-21 10:35:24,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:24,033 INFO L93 Difference]: Finished difference Result 4078 states and 5448 transitions. [2020-07-21 10:35:24,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 10:35:24,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-07-21 10:35:24,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:24,045 INFO L225 Difference]: With dead ends: 4078 [2020-07-21 10:35:24,045 INFO L226 Difference]: Without dead ends: 1927 [2020-07-21 10:35:24,052 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 [2020-07-21 10:35:24,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2020-07-21 10:35:24,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1927. [2020-07-21 10:35:24,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1927 states. [2020-07-21 10:35:24,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 2460 transitions. [2020-07-21 10:35:24,172 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 2460 transitions. Word has length 79 [2020-07-21 10:35:24,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:24,172 INFO L479 AbstractCegarLoop]: Abstraction has 1927 states and 2460 transitions. [2020-07-21 10:35:24,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 10:35:24,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 2460 transitions. [2020-07-21 10:35:24,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-21 10:35:24,176 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:24,176 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] [2020-07-21 10:35:24,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:24,392 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:24,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:24,392 INFO L82 PathProgramCache]: Analyzing trace with hash -453271351, now seen corresponding path program 1 times [2020-07-21 10:35:24,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:24,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158072135] [2020-07-21 10:35:24,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-21 10:35:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:35:24,615 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:35:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:35:24,709 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:35:24,983 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 10:35:24,984 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 10:35:25,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:25,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:35:25 BoogieIcfgContainer [2020-07-21 10:35:25,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 10:35:25,370 INFO L168 Benchmark]: Toolchain (without parser) took 10098.42 ms. Allocated memory was 144.7 MB in the beginning and 320.3 MB in the end (delta: 175.6 MB). Free memory was 101.0 MB in the beginning and 139.4 MB in the end (delta: -38.4 MB). Peak memory consumption was 137.2 MB. Max. memory is 7.1 GB. [2020-07-21 10:35:25,371 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 10:35:25,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 745.87 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 100.5 MB in the beginning and 172.2 MB in the end (delta: -71.7 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-07-21 10:35:25,373 INFO L168 Benchmark]: Boogie Preprocessor took 98.95 ms. Allocated memory is still 202.4 MB. Free memory was 172.2 MB in the beginning and 168.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-21 10:35:25,374 INFO L168 Benchmark]: RCFGBuilder took 1167.09 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 168.1 MB in the beginning and 201.5 MB in the end (delta: -33.4 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. [2020-07-21 10:35:25,375 INFO L168 Benchmark]: TraceAbstraction took 8081.23 ms. Allocated memory was 234.9 MB in the beginning and 320.3 MB in the end (delta: 85.5 MB). Free memory was 200.1 MB in the beginning and 139.4 MB in the end (delta: 60.7 MB). Peak memory consumption was 146.1 MB. Max. memory is 7.1 GB. [2020-07-21 10:35:25,378 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 745.87 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 100.5 MB in the beginning and 172.2 MB in the end (delta: -71.7 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.95 ms. Allocated memory is still 202.4 MB. Free memory was 172.2 MB in the beginning and 168.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1167.09 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 168.1 MB in the beginning and 201.5 MB in the end (delta: -33.4 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8081.23 ms. Allocated memory was 234.9 MB in the beginning and 320.3 MB in the end (delta: 85.5 MB). Free memory was 200.1 MB in the beginning and 139.4 MB in the end (delta: 60.7 MB). Peak memory consumption was 146.1 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)=51, \old(head)=70, \old(head)=93, \old(methaneLevelCritical)=59, \old(pumpRunning)=24, \old(systemActive)=89, \old(waterLevel)=94, 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: 7.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1278 SDtfs, 632 SDslu, 2115 SDs, 0 SdLazy, 640 SolverSat, 216 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 588 GetRequests, 556 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2175occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 169 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 672 NumberOfCodeBlocks, 672 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 580 ConstructedInterpolants, 0 QuantifiedInterpolants, 70182 SizeOfPredicates, 24 NumberOfNonLiveVariables, 6247 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...