./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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/parallel-misc-3.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 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:44:18,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:44:18,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:44:18,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:44:18,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:44:18,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:44:18,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:44:18,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:44:18,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:44:18,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:44:18,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:44:18,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:44:18,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:44:18,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:44:18,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:44:18,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:44:18,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:44:18,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:44:18,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:44:18,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:44:18,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:44:18,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:44:18,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:44:18,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:44:18,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:44:18,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:44:18,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:44:18,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:44:18,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:44:18,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:44:18,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:44:18,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:44:18,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:44:18,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:44:18,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:44:18,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:44:18,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:44:18,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:44:18,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:44:18,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:44:18,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:44:18,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 13:44:18,505 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:44:18,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:44:18,506 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:44:18,506 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:44:18,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:44:18,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:44:18,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:44:18,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:44:18,507 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:44:18,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:44:18,507 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:44:18,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:44:18,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:44:18,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:44:18,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:44:18,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:44:18,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:44:18,509 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:44:18,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:44:18,509 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:44:18,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:44:18,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:44:18,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:44:18,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:44:18,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:44:18,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:44:18,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:44:18,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:44:18,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:44:18,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:44:18,512 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:44:18,512 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:44:18,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:44:18,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:44:18,513 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 [2021-12-22 13:44:18,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:44:18,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:44:18,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:44:18,722 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:44:18,722 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:44:18,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2021-12-22 13:44:18,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca40fa6f1/ec7a85a741f74cfeb51d8d9ca82eec27/FLAGa672d9400 [2021-12-22 13:44:19,088 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:44:19,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2021-12-22 13:44:19,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca40fa6f1/ec7a85a741f74cfeb51d8d9ca82eec27/FLAGa672d9400 [2021-12-22 13:44:19,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca40fa6f1/ec7a85a741f74cfeb51d8d9ca82eec27 [2021-12-22 13:44:19,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:44:19,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:44:19,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:44:19,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:44:19,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:44:19,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:44:19" (1/1) ... [2021-12-22 13:44:19,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20b78c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:19, skipping insertion in model container [2021-12-22 13:44:19,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:44:19" (1/1) ... [2021-12-22 13:44:19,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:44:19,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:44:19,684 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/parallel-misc-3.wvr.c[2410,2423] [2021-12-22 13:44:19,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:44:19,691 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:44:19,704 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/parallel-misc-3.wvr.c[2410,2423] [2021-12-22 13:44:19,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:44:19,714 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:44:19,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:19 WrapperNode [2021-12-22 13:44:19,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:44:19,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:44:19,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:44:19,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:44:19,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:19" (1/1) ... [2021-12-22 13:44:19,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:19" (1/1) ... [2021-12-22 13:44:19,737 INFO L137 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2021-12-22 13:44:19,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:44:19,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:44:19,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:44:19,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:44:19,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:19" (1/1) ... [2021-12-22 13:44:19,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:19" (1/1) ... [2021-12-22 13:44:19,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:19" (1/1) ... [2021-12-22 13:44:19,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:19" (1/1) ... [2021-12-22 13:44:19,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:19" (1/1) ... [2021-12-22 13:44:19,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:19" (1/1) ... [2021-12-22 13:44:19,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:19" (1/1) ... [2021-12-22 13:44:19,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:44:19,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:44:19,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:44:19,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:44:19,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:19" (1/1) ... [2021-12-22 13:44:19,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:44:19,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:44:19,788 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) [2021-12-22 13:44:19,793 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 [2021-12-22 13:44:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:44:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-22 13:44:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-22 13:44:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-22 13:44:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-22 13:44:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:44:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 13:44:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 13:44:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-22 13:44:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-22 13:44:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:44:19,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:44:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 13:44:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 13:44:19,820 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-22 13:44:19,872 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:44:19,873 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:44:20,002 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:44:20,031 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:44:20,031 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 13:44:20,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:44:20 BoogieIcfgContainer [2021-12-22 13:44:20,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:44:20,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:44:20,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:44:20,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:44:20,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:44:19" (1/3) ... [2021-12-22 13:44:20,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7197d5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:44:20, skipping insertion in model container [2021-12-22 13:44:20,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:19" (2/3) ... [2021-12-22 13:44:20,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7197d5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:44:20, skipping insertion in model container [2021-12-22 13:44:20,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:44:20" (3/3) ... [2021-12-22 13:44:20,049 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2021-12-22 13:44:20,052 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-22 13:44:20,053 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:44:20,053 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 13:44:20,053 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-22 13:44:20,083 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,084 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,084 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,085 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,085 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,086 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,086 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,086 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,087 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,087 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,088 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,088 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,088 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,088 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,089 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,090 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,090 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,090 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,091 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,092 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,092 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,092 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,093 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,093 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,093 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,093 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,096 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,096 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,096 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,096 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,096 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,098 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,098 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,098 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-22 13:44:20,102 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-22 13:44:20,139 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:44:20,149 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 [2021-12-22 13:44:20,149 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-22 13:44:20,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 95 transitions, 206 flow [2021-12-22 13:44:20,193 INFO L129 PetriNetUnfolder]: 11/93 cut-off events. [2021-12-22 13:44:20,193 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-22 13:44:20,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 11/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2021-12-22 13:44:20,199 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 95 transitions, 206 flow [2021-12-22 13:44:20,203 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 84 transitions, 180 flow [2021-12-22 13:44:20,217 INFO L129 PetriNetUnfolder]: 11/83 cut-off events. [2021-12-22 13:44:20,217 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-22 13:44:20,218 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:44:20,218 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] [2021-12-22 13:44:20,219 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:44:20,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:44:20,222 INFO L85 PathProgramCache]: Analyzing trace with hash -964819264, now seen corresponding path program 1 times [2021-12-22 13:44:20,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:44:20,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855013805] [2021-12-22 13:44:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:44:20,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:44:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:44:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:44:20,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:44:20,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855013805] [2021-12-22 13:44:20,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855013805] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:44:20,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:44:20,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:44:20,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668631754] [2021-12-22 13:44:20,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:44:20,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:44:20,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:44:20,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:44:20,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:44:20,491 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2021-12-22 13:44:20,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2021-12-22 13:44:20,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:44:20,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2021-12-22 13:44:20,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:44:20,571 INFO L129 PetriNetUnfolder]: 42/175 cut-off events. [2021-12-22 13:44:20,572 INFO L130 PetriNetUnfolder]: For 22/23 co-relation queries the response was YES. [2021-12-22 13:44:20,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 175 events. 42/175 cut-off events. For 22/23 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 420 event pairs, 3 based on Foata normal form. 7/152 useless extension candidates. Maximal degree in co-relation 156. Up to 24 conditions per place. [2021-12-22 13:44:20,577 INFO L132 encePairwiseOnDemand]: 89/95 looper letters, 14 selfloop transitions, 2 changer transitions 1/86 dead transitions. [2021-12-22 13:44:20,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 219 flow [2021-12-22 13:44:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:44:20,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-22 13:44:20,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2021-12-22 13:44:20,596 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9192982456140351 [2021-12-22 13:44:20,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2021-12-22 13:44:20,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2021-12-22 13:44:20,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:44:20,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2021-12-22 13:44:20,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2021-12-22 13:44:20,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2021-12-22 13:44:20,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2021-12-22 13:44:20,618 INFO L186 Difference]: Start difference. First operand has 80 places, 84 transitions, 180 flow. Second operand 3 states and 262 transitions. [2021-12-22 13:44:20,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 219 flow [2021-12-22 13:44:20,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 86 transitions, 209 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-22 13:44:20,626 INFO L242 Difference]: Finished difference. Result has 79 places, 81 transitions, 176 flow [2021-12-22 13:44:20,628 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2021-12-22 13:44:20,632 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, -1 predicate places. [2021-12-22 13:44:20,632 INFO L470 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 176 flow [2021-12-22 13:44:20,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2021-12-22 13:44:20,633 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:44:20,633 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] [2021-12-22 13:44:20,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:44:20,633 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:44:20,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:44:20,634 INFO L85 PathProgramCache]: Analyzing trace with hash 170943632, now seen corresponding path program 1 times [2021-12-22 13:44:20,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:44:20,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245456771] [2021-12-22 13:44:20,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:44:20,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:44:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:44:20,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 13:44:20,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:44:20,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245456771] [2021-12-22 13:44:20,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245456771] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:44:20,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:44:20,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:44:20,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408030939] [2021-12-22 13:44:20,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:44:20,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:44:20,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:44:20,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:44:20,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:44:20,754 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2021-12-22 13:44:20,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2021-12-22 13:44:20,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:44:20,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2021-12-22 13:44:20,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:44:20,815 INFO L129 PetriNetUnfolder]: 27/141 cut-off events. [2021-12-22 13:44:20,815 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-22 13:44:20,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 141 events. 27/141 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 325 event pairs, 2 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 127. Up to 20 conditions per place. [2021-12-22 13:44:20,819 INFO L132 encePairwiseOnDemand]: 92/95 looper letters, 14 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2021-12-22 13:44:20,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 219 flow [2021-12-22 13:44:20,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:44:20,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-22 13:44:20,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2021-12-22 13:44:20,821 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9017543859649123 [2021-12-22 13:44:20,821 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2021-12-22 13:44:20,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2021-12-22 13:44:20,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:44:20,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2021-12-22 13:44:20,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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) [2021-12-22 13:44:20,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2021-12-22 13:44:20,825 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2021-12-22 13:44:20,825 INFO L186 Difference]: Start difference. First operand has 79 places, 81 transitions, 176 flow. Second operand 3 states and 257 transitions. [2021-12-22 13:44:20,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 219 flow [2021-12-22 13:44:20,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 86 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-22 13:44:20,828 INFO L242 Difference]: Finished difference. Result has 80 places, 82 transitions, 186 flow [2021-12-22 13:44:20,828 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2021-12-22 13:44:20,829 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 0 predicate places. [2021-12-22 13:44:20,829 INFO L470 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 186 flow [2021-12-22 13:44:20,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2021-12-22 13:44:20,830 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:44:20,830 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] [2021-12-22 13:44:20,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 13:44:20,830 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:44:20,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:44:20,831 INFO L85 PathProgramCache]: Analyzing trace with hash -503586312, now seen corresponding path program 1 times [2021-12-22 13:44:20,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:44:20,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535288781] [2021-12-22 13:44:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:44:20,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:44:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:44:20,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 13:44:20,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:44:20,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535288781] [2021-12-22 13:44:20,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535288781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:44:20,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:44:20,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:44:20,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105855447] [2021-12-22 13:44:20,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:44:20,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:44:20,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:44:20,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:44:20,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:44:20,918 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2021-12-22 13:44:20,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2021-12-22 13:44:20,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:44:20,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2021-12-22 13:44:20,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:44:20,967 INFO L129 PetriNetUnfolder]: 99/305 cut-off events. [2021-12-22 13:44:20,967 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-12-22 13:44:20,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 305 events. 99/305 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1179 event pairs, 5 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 283. Up to 92 conditions per place. [2021-12-22 13:44:20,970 INFO L132 encePairwiseOnDemand]: 92/95 looper letters, 16 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2021-12-22 13:44:20,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 87 transitions, 233 flow [2021-12-22 13:44:20,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:44:20,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-22 13:44:20,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2021-12-22 13:44:20,971 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.887719298245614 [2021-12-22 13:44:20,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2021-12-22 13:44:20,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2021-12-22 13:44:20,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:44:20,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2021-12-22 13:44:20,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2021-12-22 13:44:20,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2021-12-22 13:44:20,974 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2021-12-22 13:44:20,974 INFO L186 Difference]: Start difference. First operand has 80 places, 82 transitions, 186 flow. Second operand 3 states and 253 transitions. [2021-12-22 13:44:20,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 87 transitions, 233 flow [2021-12-22 13:44:20,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 231 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-22 13:44:20,977 INFO L242 Difference]: Finished difference. Result has 82 places, 83 transitions, 196 flow [2021-12-22 13:44:20,977 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2021-12-22 13:44:20,979 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 2 predicate places. [2021-12-22 13:44:20,979 INFO L470 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 196 flow [2021-12-22 13:44:20,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2021-12-22 13:44:20,979 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:44:20,980 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] [2021-12-22 13:44:20,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 13:44:20,980 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:44:20,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:44:20,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1065764968, now seen corresponding path program 1 times [2021-12-22 13:44:20,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:44:20,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273425637] [2021-12-22 13:44:20,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:44:20,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:44:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:44:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:44:21,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:44:21,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273425637] [2021-12-22 13:44:21,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273425637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:44:21,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:44:21,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 13:44:21,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797635850] [2021-12-22 13:44:21,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:44:21,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 13:44:21,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:44:21,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 13:44:21,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 13:44:21,093 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2021-12-22 13:44:21,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 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) [2021-12-22 13:44:21,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:44:21,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2021-12-22 13:44:21,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:44:21,142 INFO L129 PetriNetUnfolder]: 29/180 cut-off events. [2021-12-22 13:44:21,142 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-12-22 13:44:21,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 180 events. 29/180 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 564 event pairs, 8 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 204. Up to 29 conditions per place. [2021-12-22 13:44:21,144 INFO L132 encePairwiseOnDemand]: 88/95 looper letters, 13 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2021-12-22 13:44:21,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 87 transitions, 241 flow [2021-12-22 13:44:21,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 13:44:21,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-22 13:44:21,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2021-12-22 13:44:21,145 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8763157894736842 [2021-12-22 13:44:21,145 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 333 transitions. [2021-12-22 13:44:21,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 333 transitions. [2021-12-22 13:44:21,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:44:21,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 333 transitions. [2021-12-22 13:44:21,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 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) [2021-12-22 13:44:21,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 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) [2021-12-22 13:44:21,147 INFO L81 ComplementDD]: Finished complementDD. Result 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) [2021-12-22 13:44:21,147 INFO L186 Difference]: Start difference. First operand has 82 places, 83 transitions, 196 flow. Second operand 4 states and 333 transitions. [2021-12-22 13:44:21,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 87 transitions, 241 flow [2021-12-22 13:44:21,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 87 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-22 13:44:21,150 INFO L242 Difference]: Finished difference. Result has 86 places, 84 transitions, 219 flow [2021-12-22 13:44:21,150 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=86, PETRI_TRANSITIONS=84} [2021-12-22 13:44:21,151 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 6 predicate places. [2021-12-22 13:44:21,151 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 84 transitions, 219 flow [2021-12-22 13:44:21,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 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) [2021-12-22 13:44:21,151 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:44:21,152 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:44:21,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 13:44:21,152 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:44:21,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:44:21,152 INFO L85 PathProgramCache]: Analyzing trace with hash 898569745, now seen corresponding path program 1 times [2021-12-22 13:44:21,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:44:21,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908472424] [2021-12-22 13:44:21,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:44:21,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:44:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:44:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-22 13:44:21,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:44:21,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908472424] [2021-12-22 13:44:21,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908472424] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:44:21,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:44:21,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 13:44:21,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355001442] [2021-12-22 13:44:21,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:44:21,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 13:44:21,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:44:21,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 13:44:21,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 13:44:21,256 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2021-12-22 13:44:21,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2021-12-22 13:44:21,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:44:21,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2021-12-22 13:44:21,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:44:21,339 INFO L129 PetriNetUnfolder]: 115/566 cut-off events. [2021-12-22 13:44:21,339 INFO L130 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2021-12-22 13:44:21,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 566 events. 115/566 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3214 event pairs, 46 based on Foata normal form. 28/555 useless extension candidates. Maximal degree in co-relation 579. Up to 110 conditions per place. [2021-12-22 13:44:21,344 INFO L132 encePairwiseOnDemand]: 88/95 looper letters, 14 selfloop transitions, 5 changer transitions 0/89 dead transitions. [2021-12-22 13:44:21,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 89 transitions, 271 flow [2021-12-22 13:44:21,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 13:44:21,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-22 13:44:21,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2021-12-22 13:44:21,345 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8789473684210526 [2021-12-22 13:44:21,345 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 334 transitions. [2021-12-22 13:44:21,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 334 transitions. [2021-12-22 13:44:21,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:44:21,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 334 transitions. [2021-12-22 13:44:21,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 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) [2021-12-22 13:44:21,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 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) [2021-12-22 13:44:21,347 INFO L81 ComplementDD]: Finished complementDD. Result 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) [2021-12-22 13:44:21,347 INFO L186 Difference]: Start difference. First operand has 86 places, 84 transitions, 219 flow. Second operand 4 states and 334 transitions. [2021-12-22 13:44:21,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 89 transitions, 271 flow [2021-12-22 13:44:21,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 89 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-22 13:44:21,353 INFO L242 Difference]: Finished difference. Result has 90 places, 85 transitions, 249 flow [2021-12-22 13:44:21,353 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=249, PETRI_PLACES=90, PETRI_TRANSITIONS=85} [2021-12-22 13:44:21,355 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 10 predicate places. [2021-12-22 13:44:21,355 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 85 transitions, 249 flow [2021-12-22 13:44:21,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2021-12-22 13:44:21,355 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:44:21,356 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:44:21,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 13:44:21,356 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:44:21,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:44:21,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1047246103, now seen corresponding path program 1 times [2021-12-22 13:44:21,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:44:21,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429483568] [2021-12-22 13:44:21,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:44:21,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:44:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:44:21,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 13:44:21,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:44:21,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429483568] [2021-12-22 13:44:21,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429483568] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:44:21,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671411684] [2021-12-22 13:44:21,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:44:21,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:44:21,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:44:21,461 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:44:21,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 13:44:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:44:21,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-22 13:44:21,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:44:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 13:44:21,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:44:21,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 13:44:21,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671411684] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 13:44:21,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 13:44:21,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2021-12-22 13:44:21,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245162779] [2021-12-22 13:44:21,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 13:44:21,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:44:21,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:44:21,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:44:21,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:44:21,958 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 95 [2021-12-22 13:44:21,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 85 transitions, 249 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 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) [2021-12-22 13:44:21,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:44:21,959 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 95 [2021-12-22 13:44:21,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:44:22,074 INFO L129 PetriNetUnfolder]: 86/632 cut-off events. [2021-12-22 13:44:22,074 INFO L130 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2021-12-22 13:44:22,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 632 events. 86/632 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3722 event pairs, 17 based on Foata normal form. 1/598 useless extension candidates. Maximal degree in co-relation 561. Up to 90 conditions per place. [2021-12-22 13:44:22,078 INFO L132 encePairwiseOnDemand]: 87/95 looper letters, 26 selfloop transitions, 7 changer transitions 4/109 dead transitions. [2021-12-22 13:44:22,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 109 transitions, 378 flow [2021-12-22 13:44:22,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 13:44:22,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-22 13:44:22,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 577 transitions. [2021-12-22 13:44:22,080 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8676691729323308 [2021-12-22 13:44:22,080 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 577 transitions. [2021-12-22 13:44:22,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 577 transitions. [2021-12-22 13:44:22,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:44:22,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 577 transitions. [2021-12-22 13:44:22,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.42857142857143) internal successors, (577), 7 states have internal predecessors, (577), 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) [2021-12-22 13:44:22,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 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) [2021-12-22 13:44:22,083 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 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) [2021-12-22 13:44:22,083 INFO L186 Difference]: Start difference. First operand has 90 places, 85 transitions, 249 flow. Second operand 7 states and 577 transitions. [2021-12-22 13:44:22,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 109 transitions, 378 flow [2021-12-22 13:44:22,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 109 transitions, 373 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-12-22 13:44:22,086 INFO L242 Difference]: Finished difference. Result has 100 places, 91 transitions, 295 flow [2021-12-22 13:44:22,086 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=295, PETRI_PLACES=100, PETRI_TRANSITIONS=91} [2021-12-22 13:44:22,087 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 20 predicate places. [2021-12-22 13:44:22,087 INFO L470 AbstractCegarLoop]: Abstraction has has 100 places, 91 transitions, 295 flow [2021-12-22 13:44:22,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 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) [2021-12-22 13:44:22,087 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:44:22,088 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:44:22,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 13:44:22,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-22 13:44:22,300 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:44:22,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:44:22,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2002618959, now seen corresponding path program 2 times [2021-12-22 13:44:22,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:44:22,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251854183] [2021-12-22 13:44:22,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:44:22,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:44:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:44:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 13:44:22,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:44:22,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251854183] [2021-12-22 13:44:22,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251854183] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:44:22,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142633605] [2021-12-22 13:44:22,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 13:44:22,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:44:22,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:44:22,398 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:44:22,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 13:44:22,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 13:44:22,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 13:44:22,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-22 13:44:22,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:44:22,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 13:44:22,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:44:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 13:44:22,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142633605] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 13:44:22,765 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 13:44:22,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2021-12-22 13:44:22,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225623911] [2021-12-22 13:44:22,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 13:44:22,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 13:44:22,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:44:22,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 13:44:22,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:44:22,767 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 95 [2021-12-22 13:44:22,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 91 transitions, 295 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 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) [2021-12-22 13:44:22,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:44:22,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 95 [2021-12-22 13:44:22,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:44:22,902 INFO L129 PetriNetUnfolder]: 121/880 cut-off events. [2021-12-22 13:44:22,902 INFO L130 PetriNetUnfolder]: For 374/382 co-relation queries the response was YES. [2021-12-22 13:44:22,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1732 conditions, 880 events. 121/880 cut-off events. For 374/382 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5997 event pairs, 15 based on Foata normal form. 3/837 useless extension candidates. Maximal degree in co-relation 1677. Up to 152 conditions per place. [2021-12-22 13:44:22,907 INFO L132 encePairwiseOnDemand]: 87/95 looper letters, 32 selfloop transitions, 11 changer transitions 4/119 dead transitions. [2021-12-22 13:44:22,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 119 transitions, 495 flow [2021-12-22 13:44:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 13:44:22,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-22 13:44:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 577 transitions. [2021-12-22 13:44:22,909 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8676691729323308 [2021-12-22 13:44:22,909 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 577 transitions. [2021-12-22 13:44:22,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 577 transitions. [2021-12-22 13:44:22,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:44:22,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 577 transitions. [2021-12-22 13:44:22,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.42857142857143) internal successors, (577), 7 states have internal predecessors, (577), 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) [2021-12-22 13:44:22,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 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) [2021-12-22 13:44:22,912 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 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) [2021-12-22 13:44:22,912 INFO L186 Difference]: Start difference. First operand has 100 places, 91 transitions, 295 flow. Second operand 7 states and 577 transitions. [2021-12-22 13:44:22,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 119 transitions, 495 flow [2021-12-22 13:44:22,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 119 transitions, 481 flow, removed 7 selfloop flow, removed 2 redundant places. [2021-12-22 13:44:22,915 INFO L242 Difference]: Finished difference. Result has 107 places, 101 transitions, 400 flow [2021-12-22 13:44:22,916 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=400, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2021-12-22 13:44:22,916 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 27 predicate places. [2021-12-22 13:44:22,916 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 400 flow [2021-12-22 13:44:22,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 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) [2021-12-22 13:44:22,917 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:44:22,917 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:44:22,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 13:44:23,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-22 13:44:23,132 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:44:23,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:44:23,132 INFO L85 PathProgramCache]: Analyzing trace with hash 229789643, now seen corresponding path program 3 times [2021-12-22 13:44:23,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:44:23,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325324204] [2021-12-22 13:44:23,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:44:23,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:44:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:44:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:44:23,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:44:23,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325324204] [2021-12-22 13:44:23,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325324204] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:44:23,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895727710] [2021-12-22 13:44:23,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 13:44:23,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:44:23,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:44:23,200 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:44:23,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 13:44:23,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-22 13:44:23,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 13:44:23,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-22 13:44:23,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:44:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:44:23,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:44:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:44:23,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895727710] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 13:44:23,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 13:44:23,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2021-12-22 13:44:23,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390430224] [2021-12-22 13:44:23,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 13:44:23,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:44:23,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:44:23,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:44:23,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:44:23,563 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 95 [2021-12-22 13:44:23,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 400 flow. Second operand has 8 states, 8 states have (on average 78.625) internal successors, (629), 8 states have internal predecessors, (629), 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) [2021-12-22 13:44:23,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:44:23,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 95 [2021-12-22 13:44:23,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:44:23,694 INFO L129 PetriNetUnfolder]: 121/878 cut-off events. [2021-12-22 13:44:23,694 INFO L130 PetriNetUnfolder]: For 693/715 co-relation queries the response was YES. [2021-12-22 13:44:23,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1868 conditions, 878 events. 121/878 cut-off events. For 693/715 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5944 event pairs, 7 based on Foata normal form. 19/853 useless extension candidates. Maximal degree in co-relation 1814. Up to 83 conditions per place. [2021-12-22 13:44:23,700 INFO L132 encePairwiseOnDemand]: 87/95 looper letters, 22 selfloop transitions, 25 changer transitions 4/123 dead transitions. [2021-12-22 13:44:23,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 123 transitions, 591 flow [2021-12-22 13:44:23,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 13:44:23,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-22 13:44:23,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 652 transitions. [2021-12-22 13:44:23,702 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8578947368421053 [2021-12-22 13:44:23,702 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 652 transitions. [2021-12-22 13:44:23,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 652 transitions. [2021-12-22 13:44:23,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:44:23,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 652 transitions. [2021-12-22 13:44:23,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 81.5) internal successors, (652), 8 states have internal predecessors, (652), 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) [2021-12-22 13:44:23,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 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) [2021-12-22 13:44:23,705 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 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) [2021-12-22 13:44:23,705 INFO L186 Difference]: Start difference. First operand has 107 places, 101 transitions, 400 flow. Second operand 8 states and 652 transitions. [2021-12-22 13:44:23,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 123 transitions, 591 flow [2021-12-22 13:44:23,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 123 transitions, 573 flow, removed 9 selfloop flow, removed 2 redundant places. [2021-12-22 13:44:23,708 INFO L242 Difference]: Finished difference. Result has 113 places, 105 transitions, 487 flow [2021-12-22 13:44:23,709 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=487, PETRI_PLACES=113, PETRI_TRANSITIONS=105} [2021-12-22 13:44:23,709 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 33 predicate places. [2021-12-22 13:44:23,709 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 105 transitions, 487 flow [2021-12-22 13:44:23,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 78.625) internal successors, (629), 8 states have internal predecessors, (629), 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) [2021-12-22 13:44:23,710 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:44:23,710 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:44:23,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 13:44:23,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:44:23,925 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:44:23,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:44:23,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1010375160, now seen corresponding path program 4 times [2021-12-22 13:44:23,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:44:23,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787139332] [2021-12-22 13:44:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:44:23,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:44:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:44:23,955 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-22 13:44:23,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:44:23,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787139332] [2021-12-22 13:44:23,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787139332] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:44:23,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:44:23,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:44:23,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739821004] [2021-12-22 13:44:23,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:44:23,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:44:23,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:44:23,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:44:23,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:44:23,960 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2021-12-22 13:44:23,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 105 transitions, 487 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2021-12-22 13:44:23,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:44:23,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2021-12-22 13:44:23,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:44:24,039 INFO L129 PetriNetUnfolder]: 93/657 cut-off events. [2021-12-22 13:44:24,040 INFO L130 PetriNetUnfolder]: For 849/899 co-relation queries the response was YES. [2021-12-22 13:44:24,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1560 conditions, 657 events. 93/657 cut-off events. For 849/899 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4021 event pairs, 8 based on Foata normal form. 27/649 useless extension candidates. Maximal degree in co-relation 1531. Up to 102 conditions per place. [2021-12-22 13:44:24,045 INFO L132 encePairwiseOnDemand]: 91/95 looper letters, 20 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2021-12-22 13:44:24,045 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 107 transitions, 540 flow [2021-12-22 13:44:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:44:24,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-22 13:44:24,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2021-12-22 13:44:24,046 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8912280701754386 [2021-12-22 13:44:24,046 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2021-12-22 13:44:24,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2021-12-22 13:44:24,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:44:24,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2021-12-22 13:44:24,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2021-12-22 13:44:24,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2021-12-22 13:44:24,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2021-12-22 13:44:24,048 INFO L186 Difference]: Start difference. First operand has 113 places, 105 transitions, 487 flow. Second operand 3 states and 254 transitions. [2021-12-22 13:44:24,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 107 transitions, 540 flow [2021-12-22 13:44:24,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 107 transitions, 519 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-12-22 13:44:24,053 INFO L242 Difference]: Finished difference. Result has 111 places, 106 transitions, 488 flow [2021-12-22 13:44:24,053 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=488, PETRI_PLACES=111, PETRI_TRANSITIONS=106} [2021-12-22 13:44:24,054 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 31 predicate places. [2021-12-22 13:44:24,054 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 106 transitions, 488 flow [2021-12-22 13:44:24,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2021-12-22 13:44:24,055 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-22 13:44:24,055 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:44:24,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 13:44:24,056 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-22 13:44:24,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:44:24,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1344396963, now seen corresponding path program 5 times [2021-12-22 13:44:24,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:44:24,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157193601] [2021-12-22 13:44:24,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:44:24,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:44:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:44:24,083 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-22 13:44:24,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:44:24,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157193601] [2021-12-22 13:44:24,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157193601] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:44:24,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:44:24,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:44:24,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975516454] [2021-12-22 13:44:24,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:44:24,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:44:24,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:44:24,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:44:24,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:44:24,086 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2021-12-22 13:44:24,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 106 transitions, 488 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2021-12-22 13:44:24,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-22 13:44:24,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2021-12-22 13:44:24,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-22 13:44:24,168 INFO L129 PetriNetUnfolder]: 197/943 cut-off events. [2021-12-22 13:44:24,169 INFO L130 PetriNetUnfolder]: For 1537/1552 co-relation queries the response was YES. [2021-12-22 13:44:24,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2462 conditions, 943 events. 197/943 cut-off events. For 1537/1552 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6602 event pairs, 35 based on Foata normal form. 31/913 useless extension candidates. Maximal degree in co-relation 2070. Up to 200 conditions per place. [2021-12-22 13:44:24,173 INFO L132 encePairwiseOnDemand]: 91/95 looper letters, 0 selfloop transitions, 0 changer transitions 108/108 dead transitions. [2021-12-22 13:44:24,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 108 transitions, 597 flow [2021-12-22 13:44:24,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:44:24,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-22 13:44:24,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2021-12-22 13:44:24,175 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8982456140350877 [2021-12-22 13:44:24,175 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2021-12-22 13:44:24,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2021-12-22 13:44:24,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 13:44:24,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2021-12-22 13:44:24,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2021-12-22 13:44:24,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2021-12-22 13:44:24,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2021-12-22 13:44:24,178 INFO L186 Difference]: Start difference. First operand has 111 places, 106 transitions, 488 flow. Second operand 3 states and 256 transitions. [2021-12-22 13:44:24,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 108 transitions, 597 flow [2021-12-22 13:44:24,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 108 transitions, 564 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-12-22 13:44:24,182 INFO L242 Difference]: Finished difference. Result has 104 places, 0 transitions, 0 flow [2021-12-22 13:44:24,182 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=104, PETRI_TRANSITIONS=0} [2021-12-22 13:44:24,183 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 24 predicate places. [2021-12-22 13:44:24,183 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 0 transitions, 0 flow [2021-12-22 13:44:24,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2021-12-22 13:44:24,185 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-12-22 13:44:24,185 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-12-22 13:44:24,185 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-12-22 13:44:24,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 13:44:24,188 INFO L732 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1] [2021-12-22 13:44:24,189 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-22 13:44:24,190 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 13:44:24,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 01:44:24 BasicIcfg [2021-12-22 13:44:24,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 13:44:24,193 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 13:44:24,193 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 13:44:24,193 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 13:44:24,193 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:44:20" (3/4) ... [2021-12-22 13:44:24,195 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 13:44:24,199 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-12-22 13:44:24,199 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-12-22 13:44:24,203 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-12-22 13:44:24,203 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-22 13:44:24,203 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-22 13:44:24,204 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 13:44:24,236 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 13:44:24,236 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 13:44:24,237 INFO L158 Benchmark]: Toolchain (without parser) took 4721.06ms. Allocated memory was 90.2MB in the beginning and 142.6MB in the end (delta: 52.4MB). Free memory was 63.0MB in the beginning and 47.4MB in the end (delta: 15.6MB). Peak memory consumption was 67.4MB. Max. memory is 16.1GB. [2021-12-22 13:44:24,238 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory is still 47.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 13:44:24,238 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.90ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 62.7MB in the beginning and 94.5MB in the end (delta: -31.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 13:44:24,238 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.83ms. Allocated memory is still 117.4MB. Free memory was 94.5MB in the beginning and 92.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:44:24,239 INFO L158 Benchmark]: Boogie Preprocessor took 23.58ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 91.8MB in the end (delta: 914.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:44:24,239 INFO L158 Benchmark]: RCFGBuilder took 271.47ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 78.7MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-22 13:44:24,240 INFO L158 Benchmark]: TraceAbstraction took 4148.57ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 78.1MB in the beginning and 49.5MB in the end (delta: 28.6MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. [2021-12-22 13:44:24,240 INFO L158 Benchmark]: Witness Printer took 43.84ms. Allocated memory is still 142.6MB. Free memory was 49.5MB in the beginning and 47.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 13:44:24,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory is still 47.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.90ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 62.7MB in the beginning and 94.5MB in the end (delta: -31.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.83ms. Allocated memory is still 117.4MB. Free memory was 94.5MB in the beginning and 92.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.58ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 91.8MB in the end (delta: 914.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 271.47ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 78.7MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4148.57ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 78.1MB in the beginning and 49.5MB in the end (delta: 28.6MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. * Witness Printer took 43.84ms. Allocated memory is still 142.6MB. Free memory was 49.5MB in the beginning and 47.4MB in the end (delta: 2.1MB). 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: 101]: 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 5 procedures, 113 locations, 3 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: 4.1s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 97 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 97 mSDsluCounter, 157 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 276 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 541 IncrementalHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 58 mSDtfsCounter, 541 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 531 GetRequests, 480 SyntacticMatches, 20 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=488occurred in iteration=9, InterpolantAutomatonStates: 45, 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, 1.6s InterpolantComputationTime, 981 NumberOfCodeBlocks, 981 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1205 ConstructedInterpolants, 0 QuantifiedInterpolants, 3680 SizeOfPredicates, 6 NumberOfNonLiveVariables, 531 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 65/164 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! [2021-12-22 13:44:24,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE