./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-sre-trans.wvr.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/weaver/chl-sre-trans.wvr.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 672ab63d50f6d257836fb16bc257f69b3b166ee79333dc7cfe86a969c93c0f7f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:02:31,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:02:31,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:02:31,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:02:31,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:02:31,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:02:31,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:02:31,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:02:31,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:02:31,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:02:31,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:02:31,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:02:31,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:02:31,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:02:31,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:02:31,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:02:31,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:02:31,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:02:31,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:02:31,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:02:31,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:02:31,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:02:31,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:02:31,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:02:31,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:02:31,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:02:31,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:02:31,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:02:31,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:02:31,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:02:31,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:02:31,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:02:31,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:02:31,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:02:31,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:02:31,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:02:31,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:02:31,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:02:31,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:02:31,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:02:31,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:02:31,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 03:02:31,532 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:02:31,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:02:31,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:02:31,533 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:02:31,533 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:02:31,533 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:02:31,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:02:31,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:02:31,534 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:02:31,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:02:31,534 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 03:02:31,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:02:31,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 03:02:31,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:02:31,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:02:31,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:02:31,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:02:31,535 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 03:02:31,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:02:31,536 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:02:31,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:02:31,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:02:31,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:02:31,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:02:31,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:02:31,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:02:31,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:02:31,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:02:31,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:02:31,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:02:31,537 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:02:31,538 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:02:31,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:02:31,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:02:31,538 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 672ab63d50f6d257836fb16bc257f69b3b166ee79333dc7cfe86a969c93c0f7f [2021-12-16 03:02:31,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:02:31,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:02:31,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:02:31,748 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:02:31,749 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:02:31,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-sre-trans.wvr.c [2021-12-16 03:02:31,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c1b83c4f/3336c4399473406687a56576cd002ab9/FLAGb39873d81 [2021-12-16 03:02:32,156 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:02:32,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-sre-trans.wvr.c [2021-12-16 03:02:32,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c1b83c4f/3336c4399473406687a56576cd002ab9/FLAGb39873d81 [2021-12-16 03:02:32,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c1b83c4f/3336c4399473406687a56576cd002ab9 [2021-12-16 03:02:32,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:02:32,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:02:32,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:02:32,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:02:32,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:02:32,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:02:32" (1/1) ... [2021-12-16 03:02:32,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ff8a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:32, skipping insertion in model container [2021-12-16 03:02:32,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:02:32" (1/1) ... [2021-12-16 03:02:32,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:02:32,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:02:32,354 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/weaver/chl-sre-trans.wvr.c[2272,2285] [2021-12-16 03:02:32,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:02:32,363 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:02:32,375 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/weaver/chl-sre-trans.wvr.c[2272,2285] [2021-12-16 03:02:32,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:02:32,385 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:02:32,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:32 WrapperNode [2021-12-16 03:02:32,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:02:32,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:02:32,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:02:32,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:02:32,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:32" (1/1) ... [2021-12-16 03:02:32,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:32" (1/1) ... [2021-12-16 03:02:32,422 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2021-12-16 03:02:32,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:02:32,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:02:32,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:02:32,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:02:32,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:32" (1/1) ... [2021-12-16 03:02:32,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:32" (1/1) ... [2021-12-16 03:02:32,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:32" (1/1) ... [2021-12-16 03:02:32,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:32" (1/1) ... [2021-12-16 03:02:32,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:32" (1/1) ... [2021-12-16 03:02:32,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:32" (1/1) ... [2021-12-16 03:02:32,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:32" (1/1) ... [2021-12-16 03:02:32,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:02:32,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:02:32,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:02:32,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:02:32,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:32" (1/1) ... [2021-12-16 03:02:32,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:02:32,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:02:32,480 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) [2021-12-16 03:02:32,482 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 [2021-12-16 03:02:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:02:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-16 03:02:32,508 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-16 03:02:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-16 03:02:32,509 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-16 03:02:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-16 03:02:32,509 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-16 03:02:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:02:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:02:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:02:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:02:32,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:02:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:02:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:02:32,510 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-16 03:02:32,602 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:02:32,603 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:02:32,787 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:02:32,794 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:02:32,794 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:02:32,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:02:32 BoogieIcfgContainer [2021-12-16 03:02:32,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:02:32,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:02:32,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:02:32,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:02:32,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:02:32" (1/3) ... [2021-12-16 03:02:32,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f53557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:02:32, skipping insertion in model container [2021-12-16 03:02:32,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:32" (2/3) ... [2021-12-16 03:02:32,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f53557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:02:32, skipping insertion in model container [2021-12-16 03:02:32,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:02:32" (3/3) ... [2021-12-16 03:02:32,802 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-trans.wvr.c [2021-12-16 03:02:32,806 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-16 03:02:32,806 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:02:32,806 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:02:32,806 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-16 03:02:32,840 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,841 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,841 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,842 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,842 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,842 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,842 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,842 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,843 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,844 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,845 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,853 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,853 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,853 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,854 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,854 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,854 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,855 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,855 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,855 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,855 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,856 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,856 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,856 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,857 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,857 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,857 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,857 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,858 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,858 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,858 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,867 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,868 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,868 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,868 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,872 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,872 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,872 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,872 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,873 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,874 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,874 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,874 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:32,880 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-16 03:02:32,919 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:02:32,933 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 [2021-12-16 03:02:32,933 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-16 03:02:32,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 116 transitions, 256 flow [2021-12-16 03:02:33,002 INFO L129 PetriNetUnfolder]: 7/113 cut-off events. [2021-12-16 03:02:33,002 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-16 03:02:33,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 113 events. 7/113 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 114 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2021-12-16 03:02:33,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 116 transitions, 256 flow [2021-12-16 03:02:33,008 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 102 transitions, 222 flow [2021-12-16 03:02:33,021 INFO L129 PetriNetUnfolder]: 7/101 cut-off events. [2021-12-16 03:02:33,021 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-16 03:02:33,022 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:33,022 INFO L254 CegarLoopForPetriNet]: 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] [2021-12-16 03:02:33,023 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:33,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:33,026 INFO L85 PathProgramCache]: Analyzing trace with hash -64104107, now seen corresponding path program 1 times [2021-12-16 03:02:33,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:33,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91841144] [2021-12-16 03:02:33,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:33,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:33,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:33,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91841144] [2021-12-16 03:02:33,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91841144] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:33,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:33,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:02:33,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193851615] [2021-12-16 03:02:33,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:33,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:02:33,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:33,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:02:33,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:02:33,377 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 116 [2021-12-16 03:02:33,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:33,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:33,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 116 [2021-12-16 03:02:33,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:33,475 INFO L129 PetriNetUnfolder]: 23/199 cut-off events. [2021-12-16 03:02:33,475 INFO L130 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2021-12-16 03:02:33,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 199 events. 23/199 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 641 event pairs, 6 based on Foata normal form. 2/184 useless extension candidates. Maximal degree in co-relation 192. Up to 17 conditions per place. [2021-12-16 03:02:33,482 INFO L132 encePairwiseOnDemand]: 107/116 looper letters, 18 selfloop transitions, 4 changer transitions 6/113 dead transitions. [2021-12-16 03:02:33,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 113 transitions, 318 flow [2021-12-16 03:02:33,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:02:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 03:02:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 717 transitions. [2021-12-16 03:02:33,497 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8830049261083743 [2021-12-16 03:02:33,497 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 717 transitions. [2021-12-16 03:02:33,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 717 transitions. [2021-12-16 03:02:33,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:33,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 717 transitions. [2021-12-16 03:02:33,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 102.42857142857143) internal successors, (717), 7 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:33,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:33,515 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:33,516 INFO L186 Difference]: Start difference. First operand has 105 places, 102 transitions, 222 flow. Second operand 7 states and 717 transitions. [2021-12-16 03:02:33,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 113 transitions, 318 flow [2021-12-16 03:02:33,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 113 transitions, 294 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-16 03:02:33,522 INFO L242 Difference]: Finished difference. Result has 109 places, 102 transitions, 234 flow [2021-12-16 03:02:33,523 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=234, PETRI_PLACES=109, PETRI_TRANSITIONS=102} [2021-12-16 03:02:33,525 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, 4 predicate places. [2021-12-16 03:02:33,525 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 102 transitions, 234 flow [2021-12-16 03:02:33,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:33,526 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:33,526 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:33,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:02:33,526 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:33,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:33,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1386170374, now seen corresponding path program 1 times [2021-12-16 03:02:33,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:33,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328778760] [2021-12-16 03:02:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:33,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:33,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:33,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328778760] [2021-12-16 03:02:33,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328778760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:33,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:33,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:02:33,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222259930] [2021-12-16 03:02:33,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:33,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:02:33,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:33,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:02:33,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:02:33,654 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 116 [2021-12-16 03:02:33,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 102 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:33,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:33,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 116 [2021-12-16 03:02:33,655 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:33,819 INFO L129 PetriNetUnfolder]: 110/523 cut-off events. [2021-12-16 03:02:33,819 INFO L130 PetriNetUnfolder]: For 76/115 co-relation queries the response was YES. [2021-12-16 03:02:33,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 898 conditions, 523 events. 110/523 cut-off events. For 76/115 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2929 event pairs, 65 based on Foata normal form. 4/494 useless extension candidates. Maximal degree in co-relation 886. Up to 84 conditions per place. [2021-12-16 03:02:33,823 INFO L132 encePairwiseOnDemand]: 109/116 looper letters, 30 selfloop transitions, 4 changer transitions 4/120 dead transitions. [2021-12-16 03:02:33,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 120 transitions, 367 flow [2021-12-16 03:02:33,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:02:33,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-16 03:02:33,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 600 transitions. [2021-12-16 03:02:33,825 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8620689655172413 [2021-12-16 03:02:33,825 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 600 transitions. [2021-12-16 03:02:33,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 600 transitions. [2021-12-16 03:02:33,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:33,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 600 transitions. [2021-12-16 03:02:33,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:33,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:33,829 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:33,829 INFO L186 Difference]: Start difference. First operand has 109 places, 102 transitions, 234 flow. Second operand 6 states and 600 transitions. [2021-12-16 03:02:33,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 120 transitions, 367 flow [2021-12-16 03:02:33,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 120 transitions, 357 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-12-16 03:02:33,841 INFO L242 Difference]: Finished difference. Result has 111 places, 104 transitions, 256 flow [2021-12-16 03:02:33,841 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=111, PETRI_TRANSITIONS=104} [2021-12-16 03:02:33,842 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, 6 predicate places. [2021-12-16 03:02:33,842 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 104 transitions, 256 flow [2021-12-16 03:02:33,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:33,842 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:33,843 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:33,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:02:33,843 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:33,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:33,844 INFO L85 PathProgramCache]: Analyzing trace with hash 492186299, now seen corresponding path program 1 times [2021-12-16 03:02:33,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:33,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883151242] [2021-12-16 03:02:33,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:33,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:34,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:34,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:34,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883151242] [2021-12-16 03:02:34,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883151242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:34,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:34,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:02:34,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039948646] [2021-12-16 03:02:34,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:34,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:02:34,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:34,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:02:34,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:02:34,028 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 116 [2021-12-16 03:02:34,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 104 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:34,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 116 [2021-12-16 03:02:34,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:34,234 INFO L129 PetriNetUnfolder]: 454/1744 cut-off events. [2021-12-16 03:02:34,234 INFO L130 PetriNetUnfolder]: For 165/165 co-relation queries the response was YES. [2021-12-16 03:02:34,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 1744 events. 454/1744 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 13830 event pairs, 236 based on Foata normal form. 0/1409 useless extension candidates. Maximal degree in co-relation 2709. Up to 247 conditions per place. [2021-12-16 03:02:34,243 INFO L132 encePairwiseOnDemand]: 106/116 looper letters, 48 selfloop transitions, 6 changer transitions 7/138 dead transitions. [2021-12-16 03:02:34,243 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 138 transitions, 454 flow [2021-12-16 03:02:34,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:34,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:34,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 512 transitions. [2021-12-16 03:02:34,245 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8827586206896552 [2021-12-16 03:02:34,245 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 512 transitions. [2021-12-16 03:02:34,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 512 transitions. [2021-12-16 03:02:34,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:34,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 512 transitions. [2021-12-16 03:02:34,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.4) internal successors, (512), 5 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,247 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,247 INFO L186 Difference]: Start difference. First operand has 111 places, 104 transitions, 256 flow. Second operand 5 states and 512 transitions. [2021-12-16 03:02:34,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 138 transitions, 454 flow [2021-12-16 03:02:34,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 138 transitions, 448 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-12-16 03:02:34,251 INFO L242 Difference]: Finished difference. Result has 112 places, 105 transitions, 279 flow [2021-12-16 03:02:34,252 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=279, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2021-12-16 03:02:34,252 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, 7 predicate places. [2021-12-16 03:02:34,252 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 279 flow [2021-12-16 03:02:34,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,253 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:34,253 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:34,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:02:34,253 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:34,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:34,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1485931439, now seen corresponding path program 2 times [2021-12-16 03:02:34,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:34,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801528577] [2021-12-16 03:02:34,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:34,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:34,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:34,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:34,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801528577] [2021-12-16 03:02:34,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801528577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:34,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:34,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:34,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859974850] [2021-12-16 03:02:34,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:34,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:34,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:34,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:34,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:34,322 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 116 [2021-12-16 03:02:34,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:34,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 116 [2021-12-16 03:02:34,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:34,559 INFO L129 PetriNetUnfolder]: 345/2031 cut-off events. [2021-12-16 03:02:34,560 INFO L130 PetriNetUnfolder]: For 483/483 co-relation queries the response was YES. [2021-12-16 03:02:34,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3461 conditions, 2031 events. 345/2031 cut-off events. For 483/483 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 19052 event pairs, 69 based on Foata normal form. 33/2000 useless extension candidates. Maximal degree in co-relation 2603. Up to 202 conditions per place. [2021-12-16 03:02:34,569 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 51 selfloop transitions, 11 changer transitions 12/150 dead transitions. [2021-12-16 03:02:34,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 150 transitions, 583 flow [2021-12-16 03:02:34,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:34,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 529 transitions. [2021-12-16 03:02:34,570 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9120689655172414 [2021-12-16 03:02:34,571 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 529 transitions. [2021-12-16 03:02:34,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 529 transitions. [2021-12-16 03:02:34,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:34,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 529 transitions. [2021-12-16 03:02:34,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,574 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,574 INFO L186 Difference]: Start difference. First operand has 112 places, 105 transitions, 279 flow. Second operand 5 states and 529 transitions. [2021-12-16 03:02:34,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 150 transitions, 583 flow [2021-12-16 03:02:34,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 150 transitions, 565 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-12-16 03:02:34,579 INFO L242 Difference]: Finished difference. Result has 114 places, 111 transitions, 356 flow [2021-12-16 03:02:34,579 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=356, PETRI_PLACES=114, PETRI_TRANSITIONS=111} [2021-12-16 03:02:34,580 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, 9 predicate places. [2021-12-16 03:02:34,581 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 356 flow [2021-12-16 03:02:34,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,581 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:34,581 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:34,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:02:34,582 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:34,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:34,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1029683477, now seen corresponding path program 1 times [2021-12-16 03:02:34,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:34,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347073758] [2021-12-16 03:02:34,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:34,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:34,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:34,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:34,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347073758] [2021-12-16 03:02:34,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347073758] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:34,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:34,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:02:34,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134727371] [2021-12-16 03:02:34,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:34,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:02:34,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:34,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:02:34,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:02:34,673 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 116 [2021-12-16 03:02:34,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 111 transitions, 356 flow. Second operand has 7 states, 7 states have (on average 97.28571428571429) internal successors, (681), 7 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:34,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 116 [2021-12-16 03:02:34,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:34,799 INFO L129 PetriNetUnfolder]: 154/991 cut-off events. [2021-12-16 03:02:34,799 INFO L130 PetriNetUnfolder]: For 345/451 co-relation queries the response was YES. [2021-12-16 03:02:34,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1784 conditions, 991 events. 154/991 cut-off events. For 345/451 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8557 event pairs, 83 based on Foata normal form. 20/962 useless extension candidates. Maximal degree in co-relation 1273. Up to 232 conditions per place. [2021-12-16 03:02:34,812 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 22 selfloop transitions, 5 changer transitions 9/130 dead transitions. [2021-12-16 03:02:34,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 130 transitions, 484 flow [2021-12-16 03:02:34,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:02:34,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-16 03:02:34,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 892 transitions. [2021-12-16 03:02:34,815 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8544061302681992 [2021-12-16 03:02:34,815 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 892 transitions. [2021-12-16 03:02:34,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 892 transitions. [2021-12-16 03:02:34,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:34,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 892 transitions. [2021-12-16 03:02:34,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 99.11111111111111) internal successors, (892), 9 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,820 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,820 INFO L186 Difference]: Start difference. First operand has 114 places, 111 transitions, 356 flow. Second operand 9 states and 892 transitions. [2021-12-16 03:02:34,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 130 transitions, 484 flow [2021-12-16 03:02:34,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 130 transitions, 470 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-12-16 03:02:34,825 INFO L242 Difference]: Finished difference. Result has 125 places, 115 transitions, 389 flow [2021-12-16 03:02:34,826 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=389, PETRI_PLACES=125, PETRI_TRANSITIONS=115} [2021-12-16 03:02:34,828 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, 20 predicate places. [2021-12-16 03:02:34,828 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 115 transitions, 389 flow [2021-12-16 03:02:34,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.28571428571429) internal successors, (681), 7 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,828 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:34,828 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:34,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 03:02:34,829 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:34,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:34,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1197986629, now seen corresponding path program 1 times [2021-12-16 03:02:34,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:34,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919711063] [2021-12-16 03:02:34,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:34,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:34,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:34,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919711063] [2021-12-16 03:02:34,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919711063] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:34,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:34,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:02:34,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392029195] [2021-12-16 03:02:34,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:34,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:02:34,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:34,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:02:34,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:02:34,908 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 116 [2021-12-16 03:02:34,909 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 115 transitions, 389 flow. Second operand has 7 states, 7 states have (on average 97.28571428571429) internal successors, (681), 7 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,909 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:34,909 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 116 [2021-12-16 03:02:34,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:35,021 INFO L129 PetriNetUnfolder]: 90/751 cut-off events. [2021-12-16 03:02:35,022 INFO L130 PetriNetUnfolder]: For 248/335 co-relation queries the response was YES. [2021-12-16 03:02:35,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 751 events. 90/751 cut-off events. For 248/335 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6097 event pairs, 42 based on Foata normal form. 6/714 useless extension candidates. Maximal degree in co-relation 1391. Up to 117 conditions per place. [2021-12-16 03:02:35,026 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 28 selfloop transitions, 5 changer transitions 4/135 dead transitions. [2021-12-16 03:02:35,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 135 transitions, 520 flow [2021-12-16 03:02:35,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:02:35,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-16 03:02:35,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 893 transitions. [2021-12-16 03:02:35,028 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8553639846743295 [2021-12-16 03:02:35,028 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 893 transitions. [2021-12-16 03:02:35,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 893 transitions. [2021-12-16 03:02:35,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:35,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 893 transitions. [2021-12-16 03:02:35,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 99.22222222222223) internal successors, (893), 9 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,032 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,032 INFO L186 Difference]: Start difference. First operand has 125 places, 115 transitions, 389 flow. Second operand 9 states and 893 transitions. [2021-12-16 03:02:35,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 135 transitions, 520 flow [2021-12-16 03:02:35,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 135 transitions, 513 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-12-16 03:02:35,034 INFO L242 Difference]: Finished difference. Result has 135 places, 119 transitions, 425 flow [2021-12-16 03:02:35,035 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=425, PETRI_PLACES=135, PETRI_TRANSITIONS=119} [2021-12-16 03:02:35,035 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, 30 predicate places. [2021-12-16 03:02:35,035 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 119 transitions, 425 flow [2021-12-16 03:02:35,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.28571428571429) internal successors, (681), 7 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,036 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:35,036 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:35,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 03:02:35,036 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:35,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:35,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1547087313, now seen corresponding path program 3 times [2021-12-16 03:02:35,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:35,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871061909] [2021-12-16 03:02:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:35,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:35,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:35,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871061909] [2021-12-16 03:02:35,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871061909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:35,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:35,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:02:35,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308067520] [2021-12-16 03:02:35,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:35,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:02:35,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:35,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:02:35,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:02:35,122 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 116 [2021-12-16 03:02:35,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 119 transitions, 425 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:35,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 116 [2021-12-16 03:02:35,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:35,283 INFO L129 PetriNetUnfolder]: 320/1680 cut-off events. [2021-12-16 03:02:35,283 INFO L130 PetriNetUnfolder]: For 1110/1110 co-relation queries the response was YES. [2021-12-16 03:02:35,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3792 conditions, 1680 events. 320/1680 cut-off events. For 1110/1110 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 14780 event pairs, 105 based on Foata normal form. 38/1613 useless extension candidates. Maximal degree in co-relation 3767. Up to 217 conditions per place. [2021-12-16 03:02:35,292 INFO L132 encePairwiseOnDemand]: 106/116 looper letters, 43 selfloop transitions, 8 changer transitions 22/156 dead transitions. [2021-12-16 03:02:35,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 156 transitions, 768 flow [2021-12-16 03:02:35,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 03:02:35,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-16 03:02:35,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 423 transitions. [2021-12-16 03:02:35,293 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9116379310344828 [2021-12-16 03:02:35,293 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 423 transitions. [2021-12-16 03:02:35,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 423 transitions. [2021-12-16 03:02:35,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:35,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 423 transitions. [2021-12-16 03:02:35,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,296 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,296 INFO L186 Difference]: Start difference. First operand has 135 places, 119 transitions, 425 flow. Second operand 4 states and 423 transitions. [2021-12-16 03:02:35,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 156 transitions, 768 flow [2021-12-16 03:02:35,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 156 transitions, 763 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-12-16 03:02:35,303 INFO L242 Difference]: Finished difference. Result has 136 places, 119 transitions, 478 flow [2021-12-16 03:02:35,304 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=478, PETRI_PLACES=136, PETRI_TRANSITIONS=119} [2021-12-16 03:02:35,304 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, 31 predicate places. [2021-12-16 03:02:35,304 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 119 transitions, 478 flow [2021-12-16 03:02:35,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,305 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:35,305 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:35,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 03:02:35,305 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:35,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:35,306 INFO L85 PathProgramCache]: Analyzing trace with hash 898370707, now seen corresponding path program 4 times [2021-12-16 03:02:35,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:35,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351642662] [2021-12-16 03:02:35,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:35,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:35,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:35,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351642662] [2021-12-16 03:02:35,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351642662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:35,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:35,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:35,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474679065] [2021-12-16 03:02:35,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:35,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:35,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:35,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:35,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:35,412 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 116 [2021-12-16 03:02:35,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 119 transitions, 478 flow. Second operand has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:35,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 116 [2021-12-16 03:02:35,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:35,592 INFO L129 PetriNetUnfolder]: 256/1308 cut-off events. [2021-12-16 03:02:35,592 INFO L130 PetriNetUnfolder]: For 1830/1830 co-relation queries the response was YES. [2021-12-16 03:02:35,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3177 conditions, 1308 events. 256/1308 cut-off events. For 1830/1830 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 11072 event pairs, 74 based on Foata normal form. 15/1235 useless extension candidates. Maximal degree in co-relation 3015. Up to 197 conditions per place. [2021-12-16 03:02:35,598 INFO L132 encePairwiseOnDemand]: 107/116 looper letters, 0 selfloop transitions, 0 changer transitions 163/163 dead transitions. [2021-12-16 03:02:35,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 163 transitions, 919 flow [2021-12-16 03:02:35,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:02:35,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 03:02:35,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 700 transitions. [2021-12-16 03:02:35,599 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8620689655172413 [2021-12-16 03:02:35,600 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 700 transitions. [2021-12-16 03:02:35,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 700 transitions. [2021-12-16 03:02:35,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:35,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 700 transitions. [2021-12-16 03:02:35,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,603 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,603 INFO L186 Difference]: Start difference. First operand has 136 places, 119 transitions, 478 flow. Second operand 7 states and 700 transitions. [2021-12-16 03:02:35,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 163 transitions, 919 flow [2021-12-16 03:02:35,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 163 transitions, 915 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-12-16 03:02:35,609 INFO L242 Difference]: Finished difference. Result has 133 places, 0 transitions, 0 flow [2021-12-16 03:02:35,609 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=133, PETRI_TRANSITIONS=0} [2021-12-16 03:02:35,609 INFO L334 CegarLoopForPetriNet]: 105 programPoint places, 28 predicate places. [2021-12-16 03:02:35,610 INFO L470 AbstractCegarLoop]: Abstraction has has 133 places, 0 transitions, 0 flow [2021-12-16 03:02:35,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,612 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-16 03:02:35,612 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-16 03:02:35,612 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-16 03:02:35,612 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-16 03:02:35,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 03:02:35,615 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2021-12-16 03:02:35,616 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-16 03:02:35,616 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 03:02:35,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:02:35 BasicIcfg [2021-12-16 03:02:35,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 03:02:35,619 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 03:02:35,619 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 03:02:35,619 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 03:02:35,619 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:02:32" (3/4) ... [2021-12-16 03:02:35,621 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-16 03:02:35,625 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-12-16 03:02:35,625 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-12-16 03:02:35,625 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-12-16 03:02:35,628 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-12-16 03:02:35,628 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-16 03:02:35,628 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-16 03:02:35,628 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-16 03:02:35,645 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 03:02:35,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 03:02:35,646 INFO L158 Benchmark]: Toolchain (without parser) took 3452.33ms. Allocated memory was 96.5MB in the beginning and 155.2MB in the end (delta: 58.7MB). Free memory was 64.5MB in the beginning and 49.8MB in the end (delta: 14.7MB). Peak memory consumption was 71.6MB. Max. memory is 16.1GB. [2021-12-16 03:02:35,646 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory was 53.6MB in the beginning and 53.6MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 03:02:35,647 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.70ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 64.2MB in the beginning and 92.4MB in the end (delta: -28.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 03:02:35,647 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.75ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 90.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 03:02:35,647 INFO L158 Benchmark]: Boogie Preprocessor took 32.77ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 89.9MB in the end (delta: 927.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 03:02:35,647 INFO L158 Benchmark]: RCFGBuilder took 338.77ms. Allocated memory is still 117.4MB. Free memory was 89.4MB in the beginning and 76.4MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-16 03:02:35,648 INFO L158 Benchmark]: TraceAbstraction took 2821.68ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 76.1MB in the beginning and 53.0MB in the end (delta: 23.1MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. [2021-12-16 03:02:35,648 INFO L158 Benchmark]: Witness Printer took 26.82ms. Allocated memory is still 155.2MB. Free memory was 53.0MB in the beginning and 49.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 03:02:35,649 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory was 53.6MB in the beginning and 53.6MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.70ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 64.2MB in the beginning and 92.4MB in the end (delta: -28.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.75ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 90.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.77ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 89.9MB in the end (delta: 927.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 338.77ms. Allocated memory is still 117.4MB. Free memory was 89.4MB in the beginning and 76.4MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2821.68ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 76.1MB in the beginning and 53.0MB in the end (delta: 23.1MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. * Witness Printer took 26.82ms. Allocated memory is still 155.2MB. Free memory was 53.0MB in the beginning and 49.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 76]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 149 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 212 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 212 mSDsluCounter, 267 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 372 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 649 IncrementalHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 114 mSDtfsCounter, 649 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=478occurred in iteration=7, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 682 NumberOfCodeBlocks, 682 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 674 ConstructedInterpolants, 0 QuantifiedInterpolants, 1827 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-16 03:02:35,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE