./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a80dbad4927e9382ff212f6acae971cadaba99bba92d1fbe50466813cfe135a1 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 15:08:33,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 15:08:33,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 15:08:33,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 15:08:33,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 15:08:33,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 15:08:33,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 15:08:33,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 15:08:33,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 15:08:33,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 15:08:33,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 15:08:33,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 15:08:33,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 15:08:33,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 15:08:33,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 15:08:33,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 15:08:33,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 15:08:33,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 15:08:33,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 15:08:33,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 15:08:33,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 15:08:33,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 15:08:33,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 15:08:33,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 15:08:33,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 15:08:33,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 15:08:33,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 15:08:33,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 15:08:33,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 15:08:33,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 15:08:33,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 15:08:33,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 15:08:33,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 15:08:33,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 15:08:33,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 15:08:33,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 15:08:33,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 15:08:33,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 15:08:33,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 15:08:33,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 15:08:33,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 15:08:33,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 15:08:33,292 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 15:08:33,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 15:08:33,292 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 15:08:33,292 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 15:08:33,293 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 15:08:33,293 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 15:08:33,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 15:08:33,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 15:08:33,294 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 15:08:33,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 15:08:33,295 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 15:08:33,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 15:08:33,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 15:08:33,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 15:08:33,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 15:08:33,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 15:08:33,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 15:08:33,296 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 15:08:33,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 15:08:33,296 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 15:08:33,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 15:08:33,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 15:08:33,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 15:08:33,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 15:08:33,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:08:33,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 15:08:33,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 15:08:33,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 15:08:33,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 15:08:33,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 15:08:33,298 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 15:08:33,298 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 15:08:33,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 15:08:33,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 15:08:33,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a80dbad4927e9382ff212f6acae971cadaba99bba92d1fbe50466813cfe135a1 [2021-12-17 15:08:33,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 15:08:33,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 15:08:33,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 15:08:33,492 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 15:08:33,492 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 15:08:33,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c [2021-12-17 15:08:33,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e32ffaac/fa4107a591e045eeb5dfd9ac6c39c602/FLAG8026b668b [2021-12-17 15:08:33,937 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 15:08:33,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c [2021-12-17 15:08:33,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e32ffaac/fa4107a591e045eeb5dfd9ac6c39c602/FLAG8026b668b [2021-12-17 15:08:33,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e32ffaac/fa4107a591e045eeb5dfd9ac6c39c602 [2021-12-17 15:08:33,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 15:08:33,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 15:08:33,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 15:08:33,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 15:08:33,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 15:08:33,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:08:33" (1/1) ... [2021-12-17 15:08:33,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38463a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:33, skipping insertion in model container [2021-12-17 15:08:33,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:08:33" (1/1) ... [2021-12-17 15:08:33,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 15:08:34,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 15:08:34,158 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c[9205,9218] [2021-12-17 15:08:34,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:08:34,201 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 15:08:34,232 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c[9205,9218] [2021-12-17 15:08:34,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:08:34,270 INFO L208 MainTranslator]: Completed translation [2021-12-17 15:08:34,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:34 WrapperNode [2021-12-17 15:08:34,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 15:08:34,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 15:08:34,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 15:08:34,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 15:08:34,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:34" (1/1) ... [2021-12-17 15:08:34,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:34" (1/1) ... [2021-12-17 15:08:34,312 INFO L137 Inliner]: procedures = 58, calls = 163, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 285 [2021-12-17 15:08:34,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 15:08:34,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 15:08:34,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 15:08:34,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 15:08:34,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:34" (1/1) ... [2021-12-17 15:08:34,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:34" (1/1) ... [2021-12-17 15:08:34,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:34" (1/1) ... [2021-12-17 15:08:34,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:34" (1/1) ... [2021-12-17 15:08:34,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:34" (1/1) ... [2021-12-17 15:08:34,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:34" (1/1) ... [2021-12-17 15:08:34,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:34" (1/1) ... [2021-12-17 15:08:34,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 15:08:34,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 15:08:34,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 15:08:34,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 15:08:34,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:34" (1/1) ... [2021-12-17 15:08:34,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:08:34,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:08:34,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 15:08:34,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 15:08:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 15:08:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-12-17 15:08:34,404 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-12-17 15:08:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-12-17 15:08:34,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-12-17 15:08:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-17 15:08:34,405 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-17 15:08:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-17 15:08:34,406 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-17 15:08:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-12-17 15:08:34,406 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-12-17 15:08:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-12-17 15:08:34,406 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-12-17 15:08:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-12-17 15:08:34,406 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-12-17 15:08:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-12-17 15:08:34,407 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-12-17 15:08:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-12-17 15:08:34,407 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-12-17 15:08:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 15:08:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-12-17 15:08:34,407 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-12-17 15:08:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 15:08:34,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 15:08:34,476 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 15:08:34,478 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 15:08:34,691 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 15:08:34,695 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 15:08:34,696 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-17 15:08:34,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:08:34 BoogieIcfgContainer [2021-12-17 15:08:34,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 15:08:34,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 15:08:34,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 15:08:34,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 15:08:34,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 03:08:33" (1/3) ... [2021-12-17 15:08:34,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1075edf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:08:34, skipping insertion in model container [2021-12-17 15:08:34,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:34" (2/3) ... [2021-12-17 15:08:34,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1075edf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:08:34, skipping insertion in model container [2021-12-17 15:08:34,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:08:34" (3/3) ... [2021-12-17 15:08:34,704 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product63.cil.c [2021-12-17 15:08:34,708 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 15:08:34,711 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 15:08:34,742 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 15:08:34,746 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 15:08:34,747 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 15:08:34,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 83 states have (on average 1.3734939759036144) internal successors, (114), 94 states have internal predecessors, (114), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 14 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-17 15:08:34,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-17 15:08:34,765 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:08:34,765 INFO L514 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] [2021-12-17 15:08:34,766 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:08:34,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:08:34,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1265876681, now seen corresponding path program 1 times [2021-12-17 15:08:34,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:08:34,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403503064] [2021-12-17 15:08:34,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:08:34,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:08:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:34,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 15:08:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:34,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:08:34,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:08:34,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403503064] [2021-12-17 15:08:34,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403503064] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:08:34,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:08:34,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 15:08:34,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173411486] [2021-12-17 15:08:34,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:08:34,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 15:08:34,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:08:34,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 15:08:34,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 15:08:34,964 INFO L87 Difference]: Start difference. First operand has 114 states, 83 states have (on average 1.3734939759036144) internal successors, (114), 94 states have internal predecessors, (114), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 14 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 15:08:35,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:08:35,008 INFO L93 Difference]: Finished difference Result 220 states and 299 transitions. [2021-12-17 15:08:35,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 15:08:35,010 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-12-17 15:08:35,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:08:35,023 INFO L225 Difference]: With dead ends: 220 [2021-12-17 15:08:35,023 INFO L226 Difference]: Without dead ends: 105 [2021-12-17 15:08:35,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 15:08:35,031 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:08:35,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:08:35,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-17 15:08:35,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-12-17 15:08:35,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 76 states have (on average 1.3157894736842106) internal successors, (100), 86 states have internal predecessors, (100), 19 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-17 15:08:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 137 transitions. [2021-12-17 15:08:35,087 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 137 transitions. Word has length 25 [2021-12-17 15:08:35,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:08:35,087 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 137 transitions. [2021-12-17 15:08:35,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 15:08:35,088 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 137 transitions. [2021-12-17 15:08:35,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-17 15:08:35,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:08:35,095 INFO L514 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] [2021-12-17 15:08:35,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 15:08:35,095 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:08:35,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:08:35,097 INFO L85 PathProgramCache]: Analyzing trace with hash -541136910, now seen corresponding path program 1 times [2021-12-17 15:08:35,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:08:35,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312784705] [2021-12-17 15:08:35,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:08:35,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:08:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:35,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:08:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:08:35,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:08:35,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312784705] [2021-12-17 15:08:35,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312784705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:08:35,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:08:35,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:08:35,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761363420] [2021-12-17 15:08:35,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:08:35,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:08:35,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:08:35,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:08:35,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:08:35,186 INFO L87 Difference]: Start difference. First operand 105 states and 137 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 15:08:35,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:08:35,198 INFO L93 Difference]: Finished difference Result 172 states and 224 transitions. [2021-12-17 15:08:35,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:08:35,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-12-17 15:08:35,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:08:35,199 INFO L225 Difference]: With dead ends: 172 [2021-12-17 15:08:35,199 INFO L226 Difference]: Without dead ends: 96 [2021-12-17 15:08:35,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:08:35,201 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 16 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:08:35,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 227 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:08:35,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-17 15:08:35,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-12-17 15:08:35,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 80 states have internal predecessors, (93), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-17 15:08:35,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 125 transitions. [2021-12-17 15:08:35,209 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 125 transitions. Word has length 26 [2021-12-17 15:08:35,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:08:35,209 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 125 transitions. [2021-12-17 15:08:35,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 15:08:35,209 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 125 transitions. [2021-12-17 15:08:35,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-17 15:08:35,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:08:35,210 INFO L514 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] [2021-12-17 15:08:35,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 15:08:35,210 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:08:35,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:08:35,211 INFO L85 PathProgramCache]: Analyzing trace with hash 826404174, now seen corresponding path program 1 times [2021-12-17 15:08:35,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:08:35,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729464905] [2021-12-17 15:08:35,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:08:35,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:08:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:35,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 15:08:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:35,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:08:35,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:08:35,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729464905] [2021-12-17 15:08:35,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729464905] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:08:35,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:08:35,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:08:35,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781140988] [2021-12-17 15:08:35,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:08:35,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:08:35,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:08:35,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:08:35,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:08:35,283 INFO L87 Difference]: Start difference. First operand 96 states and 125 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 15:08:35,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:08:35,325 INFO L93 Difference]: Finished difference Result 273 states and 361 transitions. [2021-12-17 15:08:35,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:08:35,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-12-17 15:08:35,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:08:35,327 INFO L225 Difference]: With dead ends: 273 [2021-12-17 15:08:35,327 INFO L226 Difference]: Without dead ends: 184 [2021-12-17 15:08:35,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:08:35,329 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 105 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:08:35,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 274 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:08:35,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-12-17 15:08:35,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2021-12-17 15:08:35,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 130 states have (on average 1.3461538461538463) internal successors, (175), 149 states have internal predecessors, (175), 32 states have call successors, (32), 18 states have call predecessors, (32), 18 states have return successors, (32), 21 states have call predecessors, (32), 32 states have call successors, (32) [2021-12-17 15:08:35,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 239 transitions. [2021-12-17 15:08:35,348 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 239 transitions. Word has length 30 [2021-12-17 15:08:35,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:08:35,348 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 239 transitions. [2021-12-17 15:08:35,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 15:08:35,349 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 239 transitions. [2021-12-17 15:08:35,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-17 15:08:35,351 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:08:35,351 INFO L514 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] [2021-12-17 15:08:35,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 15:08:35,352 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:08:35,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:08:35,354 INFO L85 PathProgramCache]: Analyzing trace with hash 856279620, now seen corresponding path program 1 times [2021-12-17 15:08:35,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:08:35,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576644405] [2021-12-17 15:08:35,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:08:35,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:08:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:35,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 15:08:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:08:35,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:08:35,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576644405] [2021-12-17 15:08:35,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576644405] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:08:35,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:08:35,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 15:08:35,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167051775] [2021-12-17 15:08:35,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:08:35,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 15:08:35,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:08:35,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 15:08:35,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 15:08:35,439 INFO L87 Difference]: Start difference. First operand 181 states and 239 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 15:08:35,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:08:35,501 INFO L93 Difference]: Finished difference Result 523 states and 712 transitions. [2021-12-17 15:08:35,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 15:08:35,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-12-17 15:08:35,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:08:35,504 INFO L225 Difference]: With dead ends: 523 [2021-12-17 15:08:35,504 INFO L226 Difference]: Without dead ends: 349 [2021-12-17 15:08:35,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:08:35,506 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 94 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:08:35,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 518 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:08:35,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-12-17 15:08:35,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 343. [2021-12-17 15:08:35,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 244 states have (on average 1.3278688524590163) internal successors, (324), 279 states have internal predecessors, (324), 64 states have call successors, (64), 36 states have call predecessors, (64), 34 states have return successors, (66), 40 states have call predecessors, (66), 64 states have call successors, (66) [2021-12-17 15:08:35,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 454 transitions. [2021-12-17 15:08:35,531 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 454 transitions. Word has length 34 [2021-12-17 15:08:35,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:08:35,531 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 454 transitions. [2021-12-17 15:08:35,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 15:08:35,532 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 454 transitions. [2021-12-17 15:08:35,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-17 15:08:35,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:08:35,533 INFO L514 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] [2021-12-17 15:08:35,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 15:08:35,534 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:08:35,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:08:35,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1349568951, now seen corresponding path program 1 times [2021-12-17 15:08:35,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:08:35,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005883412] [2021-12-17 15:08:35,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:08:35,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:08:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:35,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:08:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:08:35,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:08:35,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005883412] [2021-12-17 15:08:35,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005883412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:08:35,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:08:35,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:08:35,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838347551] [2021-12-17 15:08:35,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:08:35,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:08:35,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:08:35,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:08:35,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:08:35,565 INFO L87 Difference]: Start difference. First operand 343 states and 454 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 15:08:35,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:08:35,633 INFO L93 Difference]: Finished difference Result 833 states and 1117 transitions. [2021-12-17 15:08:35,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:08:35,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-12-17 15:08:35,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:08:35,642 INFO L225 Difference]: With dead ends: 833 [2021-12-17 15:08:35,642 INFO L226 Difference]: Without dead ends: 497 [2021-12-17 15:08:35,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:08:35,648 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 76 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:08:35,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 209 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:08:35,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-12-17 15:08:35,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 488. [2021-12-17 15:08:35,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 359 states have (on average 1.2729805013927578) internal successors, (457), 385 states have internal predecessors, (457), 69 states have call successors, (69), 59 states have call predecessors, (69), 59 states have return successors, (93), 64 states have call predecessors, (93), 69 states have call successors, (93) [2021-12-17 15:08:35,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 619 transitions. [2021-12-17 15:08:35,695 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 619 transitions. Word has length 36 [2021-12-17 15:08:35,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:08:35,695 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 619 transitions. [2021-12-17 15:08:35,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 15:08:35,696 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 619 transitions. [2021-12-17 15:08:35,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-17 15:08:35,696 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:08:35,696 INFO L514 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] [2021-12-17 15:08:35,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 15:08:35,697 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:08:35,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:08:35,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1555178858, now seen corresponding path program 1 times [2021-12-17 15:08:35,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:08:35,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063800686] [2021-12-17 15:08:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:08:35,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:08:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 15:08:35,722 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 15:08:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 15:08:35,758 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 15:08:35,758 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 15:08:35,759 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 15:08:35,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 15:08:35,765 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-17 15:08:35,767 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 15:08:35,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 03:08:35 BoogieIcfgContainer [2021-12-17 15:08:35,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 15:08:35,811 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 15:08:35,811 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 15:08:35,812 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 15:08:35,812 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:08:34" (3/4) ... [2021-12-17 15:08:35,813 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-17 15:08:35,855 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 15:08:35,858 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 15:08:35,859 INFO L158 Benchmark]: Toolchain (without parser) took 1900.60ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 84.0MB in the beginning and 88.4MB in the end (delta: -4.4MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2021-12-17 15:08:35,859 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 119.5MB. Free memory was 92.6MB in the beginning and 92.6MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 15:08:35,859 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.31ms. Allocated memory is still 119.5MB. Free memory was 83.7MB in the beginning and 86.7MB in the end (delta: -3.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-17 15:08:35,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.34ms. Allocated memory is still 119.5MB. Free memory was 86.7MB in the beginning and 84.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 15:08:35,860 INFO L158 Benchmark]: Boogie Preprocessor took 17.37ms. Allocated memory is still 119.5MB. Free memory was 84.0MB in the beginning and 82.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 15:08:35,860 INFO L158 Benchmark]: RCFGBuilder took 366.43ms. Allocated memory is still 119.5MB. Free memory was 81.9MB in the beginning and 64.3MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-17 15:08:35,860 INFO L158 Benchmark]: TraceAbstraction took 1112.35ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 63.7MB in the beginning and 92.6MB in the end (delta: -28.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 15:08:35,860 INFO L158 Benchmark]: Witness Printer took 47.02ms. Allocated memory is still 144.7MB. Free memory was 92.6MB in the beginning and 88.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-17 15:08:35,862 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 119.5MB. Free memory was 92.6MB in the beginning and 92.6MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.31ms. Allocated memory is still 119.5MB. Free memory was 83.7MB in the beginning and 86.7MB in the end (delta: -3.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.34ms. Allocated memory is still 119.5MB. Free memory was 86.7MB in the beginning and 84.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.37ms. Allocated memory is still 119.5MB. Free memory was 84.0MB in the beginning and 82.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 366.43ms. Allocated memory is still 119.5MB. Free memory was 81.9MB in the beginning and 64.3MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1112.35ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 63.7MB in the beginning and 92.6MB in the end (delta: -28.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 47.02ms. Allocated memory is still 144.7MB. Free memory was 92.6MB in the beginning and 88.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 629]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L198] int pumpRunning = 0; [L199] int systemActive = 1; [L522] int waterLevel = 1; [L523] int methaneLevelCritical = 0; [L837] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L131] int retValue_acc ; [L132] int tmp ; [L136] FCALL select_helpers() [L137] FCALL select_features() [L138] CALL, EXPR valid_product() [L180] int retValue_acc ; [L183] retValue_acc = 1 [L184] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L138] RET, EXPR valid_product() [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L142] FCALL setup() [L143] CALL runTest() [L122] CALL test() [L455] int splverifierCounter ; [L456] int tmp ; [L457] int tmp___0 ; [L458] int tmp___1 ; [L459] int tmp___2 ; [L462] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L464] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L466] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L472] tmp = __VERIFIER_nondet_int() [L474] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L476] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L540] COND TRUE waterLevel < 2 [L541] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L476] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L482] tmp___0 = __VERIFIER_nondet_int() [L484] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L492] tmp___2 = __VERIFIER_nondet_int() [L494] COND FALSE !(\read(tmp___2)) [L498] tmp___1 = __VERIFIER_nondet_int() [L500] COND TRUE \read(tmp___1) [L502] CALL stopSystem() [L442] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L449] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L502] RET stopSystem() [L509] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L206] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L213] COND FALSE !(\read(systemActive)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L221] CALL __utac_acc__Specification3_spec__1() [L635] int tmp ; [L636] int tmp___0 ; [L637] int tmp___1 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L641] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L561] int retValue_acc ; [L564] retValue_acc = methaneLevelCritical [L565] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=0, waterLevel=2] [L641] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L641] tmp = isMethaneLevelCritical() [L643] COND FALSE !(\read(tmp)) [L647] CALL, EXPR getWaterLevel() [L593] int retValue_acc ; [L596] retValue_acc = waterLevel [L597] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=2, systemActive=0, waterLevel=2] [L647] RET, EXPR getWaterLevel() [L647] tmp___0 = getWaterLevel() [L649] COND TRUE tmp___0 == 2 [L651] CALL, EXPR isPumpRunning() [L356] int retValue_acc ; [L359] retValue_acc = pumpRunning [L360] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=0, waterLevel=2] [L651] RET, EXPR isPumpRunning() [L651] tmp___1 = isPumpRunning() [L653] COND FALSE !(\read(tmp___1)) [L657] CALL __automaton_fail() [L629] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 295 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 291 mSDsluCounter, 1374 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 682 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 692 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=488occurred in iteration=5, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-17 15:08:35,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE