./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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-ticket-2.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 2c45fd7cfbad1c12ff3ef6a6150c824b5f7de404c290f417bc2834c0c8e69422 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:30:12,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:30:12,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:30:12,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:30:12,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:30:12,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:30:12,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:30:12,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:30:12,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:30:12,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:30:12,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:30:12,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:30:12,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:30:12,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:30:12,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:30:12,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:30:12,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:30:12,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:30:12,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:30:12,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:30:12,580 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:30:12,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:30:12,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:30:12,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:30:12,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:30:12,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:30:12,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:30:12,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:30:12,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:30:12,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:30:12,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:30:12,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:30:12,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:30:12,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:30:12,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:30:12,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:30:12,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:30:12,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:30:12,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:30:12,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:30:12,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:30:12,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:30:12,602 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:30:12,629 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:30:12,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:30:12,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:30:12,630 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:30:12,631 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:30:12,631 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:30:12,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:30:12,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:30:12,632 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:30:12,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:30:12,633 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:30:12,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:30:12,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:30:12,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:30:12,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:30:12,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:30:12,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:30:12,635 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:30:12,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:30:12,636 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:30:12,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:30:12,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:30:12,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:30:12,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:30:12,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:30:12,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:30:12,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:30:12,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:30:12,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:30:12,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:30:12,638 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:30:12,639 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:30:12,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:30:12,639 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c45fd7cfbad1c12ff3ef6a6150c824b5f7de404c290f417bc2834c0c8e69422 [2022-07-19 21:30:12,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:30:12,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:30:12,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:30:12,908 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:30:12,908 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:30:12,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2022-07-19 21:30:12,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2e67080/9e458db16e0d4b499f1702010f138c86/FLAG3b715b6cd [2022-07-19 21:30:13,390 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:30:13,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2022-07-19 21:30:13,399 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2e67080/9e458db16e0d4b499f1702010f138c86/FLAG3b715b6cd [2022-07-19 21:30:13,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2e67080/9e458db16e0d4b499f1702010f138c86 [2022-07-19 21:30:13,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:30:13,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:30:13,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:30:13,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:30:13,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:30:13,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:30:13" (1/1) ... [2022-07-19 21:30:13,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18ecfcb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:13, skipping insertion in model container [2022-07-19 21:30:13,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:30:13" (1/1) ... [2022-07-19 21:30:13,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:30:13,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:30:13,982 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-ticket-2.wvr.c[2652,2665] [2022-07-19 21:30:13,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:30:14,001 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:30:14,024 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-ticket-2.wvr.c[2652,2665] [2022-07-19 21:30:14,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:30:14,036 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:30:14,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:14 WrapperNode [2022-07-19 21:30:14,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:30:14,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:30:14,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:30:14,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:30:14,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:14" (1/1) ... [2022-07-19 21:30:14,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:14" (1/1) ... [2022-07-19 21:30:14,073 INFO L137 Inliner]: procedures = 21, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 118 [2022-07-19 21:30:14,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:30:14,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:30:14,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:30:14,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:30:14,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:14" (1/1) ... [2022-07-19 21:30:14,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:14" (1/1) ... [2022-07-19 21:30:14,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:14" (1/1) ... [2022-07-19 21:30:14,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:14" (1/1) ... [2022-07-19 21:30:14,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:14" (1/1) ... [2022-07-19 21:30:14,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:14" (1/1) ... [2022-07-19 21:30:14,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:14" (1/1) ... [2022-07-19 21:30:14,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:30:14,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:30:14,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:30:14,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:30:14,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:14" (1/1) ... [2022-07-19 21:30:14,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:30:14,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:30:14,129 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) [2022-07-19 21:30:14,131 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 [2022-07-19 21:30:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:30:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:30:14,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:30:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:30:14,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:30:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:30:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:30:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:30:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:30:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:30:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:30:14,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:30:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:30:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:30:14,171 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:30:14,236 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:30:14,237 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:30:14,457 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:30:14,507 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:30:14,508 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:30:14,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:14 BoogieIcfgContainer [2022-07-19 21:30:14,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:30:14,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:30:14,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:30:14,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:30:14,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:30:13" (1/3) ... [2022-07-19 21:30:14,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7767624c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:30:14, skipping insertion in model container [2022-07-19 21:30:14,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:14" (2/3) ... [2022-07-19 21:30:14,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7767624c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:30:14, skipping insertion in model container [2022-07-19 21:30:14,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:14" (3/3) ... [2022-07-19 21:30:14,525 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2022-07-19 21:30:14,538 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:30:14,545 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:30:14,545 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:30:14,545 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:30:14,583 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-19 21:30:14,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 96 transitions, 208 flow [2022-07-19 21:30:14,649 INFO L129 PetriNetUnfolder]: 2/94 cut-off events. [2022-07-19 21:30:14,649 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:30:14,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 94 events. 2/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-07-19 21:30:14,652 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 96 transitions, 208 flow [2022-07-19 21:30:14,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 85 transitions, 182 flow [2022-07-19 21:30:14,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:30:14,671 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7f31ce0b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6c19c13b [2022-07-19 21:30:14,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:30:14,694 INFO L129 PetriNetUnfolder]: 2/84 cut-off events. [2022-07-19 21:30:14,695 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:30:14,695 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:14,696 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:14,697 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:30:14,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:14,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1079142445, now seen corresponding path program 1 times [2022-07-19 21:30:14,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:14,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59358312] [2022-07-19 21:30:14,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:14,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:15,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:30:15,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:15,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59358312] [2022-07-19 21:30:15,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59358312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:15,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:15,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:30:15,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042558904] [2022-07-19 21:30:15,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:15,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:30:15,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:15,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:30:15,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:30:15,255 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 96 [2022-07-19 21:30:15,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 85 transitions, 182 flow. Second operand has 9 states, 9 states have (on average 68.77777777777777) internal successors, (619), 9 states have internal predecessors, (619), 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) [2022-07-19 21:30:15,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:15,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 96 [2022-07-19 21:30:15,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:15,583 INFO L129 PetriNetUnfolder]: 30/185 cut-off events. [2022-07-19 21:30:15,584 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-07-19 21:30:15,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 185 events. 30/185 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 455 event pairs, 12 based on Foata normal form. 3/182 useless extension candidates. Maximal degree in co-relation 174. Up to 31 conditions per place. [2022-07-19 21:30:15,588 INFO L132 encePairwiseOnDemand]: 82/96 looper letters, 22 selfloop transitions, 6 changer transitions 17/101 dead transitions. [2022-07-19 21:30:15,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 101 transitions, 316 flow [2022-07-19 21:30:15,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:30:15,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-19 21:30:15,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 841 transitions. [2022-07-19 21:30:15,605 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7300347222222222 [2022-07-19 21:30:15,606 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 841 transitions. [2022-07-19 21:30:15,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 841 transitions. [2022-07-19 21:30:15,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:15,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 841 transitions. [2022-07-19 21:30:15,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 70.08333333333333) internal successors, (841), 12 states have internal predecessors, (841), 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) [2022-07-19 21:30:15,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 96.0) internal successors, (1248), 13 states have internal predecessors, (1248), 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) [2022-07-19 21:30:15,624 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 96.0) internal successors, (1248), 13 states have internal predecessors, (1248), 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) [2022-07-19 21:30:15,626 INFO L186 Difference]: Start difference. First operand has 90 places, 85 transitions, 182 flow. Second operand 12 states and 841 transitions. [2022-07-19 21:30:15,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 101 transitions, 316 flow [2022-07-19 21:30:15,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 300 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:30:15,633 INFO L242 Difference]: Finished difference. Result has 101 places, 81 transitions, 188 flow [2022-07-19 21:30:15,634 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=188, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2022-07-19 21:30:15,638 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 11 predicate places. [2022-07-19 21:30:15,638 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 188 flow [2022-07-19 21:30:15,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 68.77777777777777) internal successors, (619), 9 states have internal predecessors, (619), 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) [2022-07-19 21:30:15,639 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:15,639 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:15,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:30:15,639 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:30:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:15,640 INFO L85 PathProgramCache]: Analyzing trace with hash -584254171, now seen corresponding path program 2 times [2022-07-19 21:30:15,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:15,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009003242] [2022-07-19 21:30:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:15,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:30:15,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:15,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009003242] [2022-07-19 21:30:15,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009003242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:15,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:15,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:30:15,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146929915] [2022-07-19 21:30:15,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:15,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:30:15,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:15,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:30:15,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:30:15,764 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 96 [2022-07-19 21:30:15,765 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 188 flow. Second operand has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 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) [2022-07-19 21:30:15,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:15,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 96 [2022-07-19 21:30:15,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:15,866 INFO L129 PetriNetUnfolder]: 8/131 cut-off events. [2022-07-19 21:30:15,867 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-19 21:30:15,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 131 events. 8/131 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 183 event pairs, 2 based on Foata normal form. 2/131 useless extension candidates. Maximal degree in co-relation 193. Up to 16 conditions per place. [2022-07-19 21:30:15,869 INFO L132 encePairwiseOnDemand]: 88/96 looper letters, 25 selfloop transitions, 9 changer transitions 3/94 dead transitions. [2022-07-19 21:30:15,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 94 transitions, 297 flow [2022-07-19 21:30:15,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:30:15,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:30:15,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 507 transitions. [2022-07-19 21:30:15,872 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7544642857142857 [2022-07-19 21:30:15,872 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 507 transitions. [2022-07-19 21:30:15,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 507 transitions. [2022-07-19 21:30:15,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:15,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 507 transitions. [2022-07-19 21:30:15,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 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) [2022-07-19 21:30:15,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 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) [2022-07-19 21:30:15,877 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 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) [2022-07-19 21:30:15,877 INFO L186 Difference]: Start difference. First operand has 101 places, 81 transitions, 188 flow. Second operand 7 states and 507 transitions. [2022-07-19 21:30:15,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 94 transitions, 297 flow [2022-07-19 21:30:15,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 94 transitions, 273 flow, removed 6 selfloop flow, removed 8 redundant places. [2022-07-19 21:30:15,881 INFO L242 Difference]: Finished difference. Result has 93 places, 84 transitions, 205 flow [2022-07-19 21:30:15,882 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=205, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2022-07-19 21:30:15,884 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 3 predicate places. [2022-07-19 21:30:15,885 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 205 flow [2022-07-19 21:30:15,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 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) [2022-07-19 21:30:15,886 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:15,886 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:15,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:30:15,887 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:30:15,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:15,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2066816159, now seen corresponding path program 3 times [2022-07-19 21:30:15,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:15,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853164326] [2022-07-19 21:30:15,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:15,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:16,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:30:16,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:16,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853164326] [2022-07-19 21:30:16,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853164326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:16,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:16,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:30:16,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528629533] [2022-07-19 21:30:16,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:16,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:30:16,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:16,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:30:16,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:30:16,163 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 96 [2022-07-19 21:30:16,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 205 flow. Second operand has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 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) [2022-07-19 21:30:16,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:16,164 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 96 [2022-07-19 21:30:16,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:16,340 INFO L129 PetriNetUnfolder]: 16/163 cut-off events. [2022-07-19 21:30:16,341 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-07-19 21:30:16,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 163 events. 16/163 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 342 event pairs, 6 based on Foata normal form. 2/163 useless extension candidates. Maximal degree in co-relation 148. Up to 25 conditions per place. [2022-07-19 21:30:16,342 INFO L132 encePairwiseOnDemand]: 85/96 looper letters, 22 selfloop transitions, 6 changer transitions 18/102 dead transitions. [2022-07-19 21:30:16,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 102 transitions, 361 flow [2022-07-19 21:30:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:30:16,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:30:16,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 635 transitions. [2022-07-19 21:30:16,346 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7349537037037037 [2022-07-19 21:30:16,346 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 635 transitions. [2022-07-19 21:30:16,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 635 transitions. [2022-07-19 21:30:16,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:16,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 635 transitions. [2022-07-19 21:30:16,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 70.55555555555556) internal successors, (635), 9 states have internal predecessors, (635), 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) [2022-07-19 21:30:16,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2022-07-19 21:30:16,352 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2022-07-19 21:30:16,352 INFO L186 Difference]: Start difference. First operand has 93 places, 84 transitions, 205 flow. Second operand 9 states and 635 transitions. [2022-07-19 21:30:16,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 102 transitions, 361 flow [2022-07-19 21:30:16,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 102 transitions, 348 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-07-19 21:30:16,357 INFO L242 Difference]: Finished difference. Result has 101 places, 83 transitions, 217 flow [2022-07-19 21:30:16,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=217, PETRI_PLACES=101, PETRI_TRANSITIONS=83} [2022-07-19 21:30:16,359 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 11 predicate places. [2022-07-19 21:30:16,360 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 83 transitions, 217 flow [2022-07-19 21:30:16,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 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) [2022-07-19 21:30:16,360 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:30:16,361 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:30:16,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:30:16,361 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:30:16,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:30:16,362 INFO L85 PathProgramCache]: Analyzing trace with hash -372328971, now seen corresponding path program 4 times [2022-07-19 21:30:16,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:30:16,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672681939] [2022-07-19 21:30:16,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:30:16,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:30:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:30:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:30:16,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:30:16,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672681939] [2022-07-19 21:30:16,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672681939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:30:16,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:30:16,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:30:16,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052529021] [2022-07-19 21:30:16,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:30:16,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:30:16,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:30:16,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:30:16,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:30:16,491 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 96 [2022-07-19 21:30:16,492 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 83 transitions, 217 flow. Second operand has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 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) [2022-07-19 21:30:16,492 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:30:16,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 96 [2022-07-19 21:30:16,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:16,540 INFO L129 PetriNetUnfolder]: 1/61 cut-off events. [2022-07-19 21:30:16,540 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-19 21:30:16,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 61 events. 1/61 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 2/63 useless extension candidates. Maximal degree in co-relation 91. Up to 7 conditions per place. [2022-07-19 21:30:16,541 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2022-07-19 21:30:16,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 60 transitions, 175 flow [2022-07-19 21:30:16,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:30:16,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:30:16,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 486 transitions. [2022-07-19 21:30:16,543 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7232142857142857 [2022-07-19 21:30:16,543 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 486 transitions. [2022-07-19 21:30:16,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 486 transitions. [2022-07-19 21:30:16,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:16,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 486 transitions. [2022-07-19 21:30:16,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 69.42857142857143) internal successors, (486), 7 states have internal predecessors, (486), 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) [2022-07-19 21:30:16,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 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) [2022-07-19 21:30:16,547 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 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) [2022-07-19 21:30:16,548 INFO L186 Difference]: Start difference. First operand has 101 places, 83 transitions, 217 flow. Second operand 7 states and 486 transitions. [2022-07-19 21:30:16,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 60 transitions, 175 flow [2022-07-19 21:30:16,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 60 transitions, 160 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-19 21:30:16,549 INFO L242 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2022-07-19 21:30:16,549 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2022-07-19 21:30:16,550 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, -16 predicate places. [2022-07-19 21:30:16,550 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2022-07-19 21:30:16,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 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) [2022-07-19 21:30:16,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-19 21:30:16,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-19 21:30:16,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-19 21:30:16,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:30:16,555 INFO L356 BasicCegarLoop]: Path program histogram: [4] [2022-07-19 21:30:16,558 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:30:16,558 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:30:16,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:30:16 BasicIcfg [2022-07-19 21:30:16,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:30:16,563 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:30:16,563 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:30:16,564 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:30:16,564 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:14" (3/4) ... [2022-07-19 21:30:16,566 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:30:16,570 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-19 21:30:16,571 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-19 21:30:16,574 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-07-19 21:30:16,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-19 21:30:16,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:30:16,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:30:16,604 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:30:16,605 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:30:16,605 INFO L158 Benchmark]: Toolchain (without parser) took 2815.65ms. Allocated memory was 88.1MB in the beginning and 136.3MB in the end (delta: 48.2MB). Free memory was 48.8MB in the beginning and 93.8MB in the end (delta: -45.0MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. [2022-07-19 21:30:16,606 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 88.1MB. Free memory was 65.7MB in the beginning and 65.6MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:30:16,606 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.54ms. Allocated memory is still 88.1MB. Free memory was 48.6MB in the beginning and 63.4MB in the end (delta: -14.8MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2022-07-19 21:30:16,606 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.94ms. Allocated memory is still 88.1MB. Free memory was 63.4MB in the beginning and 61.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:30:16,607 INFO L158 Benchmark]: Boogie Preprocessor took 17.61ms. Allocated memory is still 88.1MB. Free memory was 61.5MB in the beginning and 60.4MB in the end (delta: 1.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 21:30:16,607 INFO L158 Benchmark]: RCFGBuilder took 417.38ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 60.4MB in the beginning and 90.0MB in the end (delta: -29.7MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2022-07-19 21:30:16,607 INFO L158 Benchmark]: TraceAbstraction took 2051.33ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 89.5MB in the beginning and 95.9MB in the end (delta: -6.4MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2022-07-19 21:30:16,608 INFO L158 Benchmark]: Witness Printer took 41.46ms. Allocated memory is still 136.3MB. Free memory was 95.9MB in the beginning and 93.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:30:16,610 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 88.1MB. Free memory was 65.7MB in the beginning and 65.6MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.54ms. Allocated memory is still 88.1MB. Free memory was 48.6MB in the beginning and 63.4MB in the end (delta: -14.8MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.94ms. Allocated memory is still 88.1MB. Free memory was 63.4MB in the beginning and 61.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.61ms. Allocated memory is still 88.1MB. Free memory was 61.5MB in the beginning and 60.4MB in the end (delta: 1.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 417.38ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 60.4MB in the beginning and 90.0MB in the end (delta: -29.7MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2051.33ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 89.5MB in the beginning and 95.9MB in the end (delta: -6.4MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * Witness Printer took 41.46ms. Allocated memory is still 136.3MB. Free memory was 95.9MB in the beginning and 93.8MB 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: - PositiveResult [Line: 102]: 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, 112 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: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 117 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 117 mSDsluCounter, 129 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 220 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 364 IncrementalHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 45 mSDtfsCounter, 364 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=217occurred in iteration=3, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 324 NumberOfCodeBlocks, 324 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 320 ConstructedInterpolants, 0 QuantifiedInterpolants, 1192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-19 21:30:16,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE