./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/spaghetti.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 44c38e66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/weaver/spaghetti.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 846f3fa2b3520d0013071e1a40d4401eee84eafe31e419bacc7c09bfb8abae71 --- Real Ultimate output --- This is Ultimate 0.3.0-?-44c38e6-m [2025-04-24 20:32:07,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 20:32:07,141 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-24 20:32:07,145 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 20:32:07,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 20:32:07,165 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 20:32:07,166 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 20:32:07,166 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 20:32:07,166 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 20:32:07,166 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 20:32:07,166 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 20:32:07,166 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 20:32:07,166 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 20:32:07,167 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 20:32:07,167 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 20:32:07,167 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 20:32:07,167 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-24 20:32:07,167 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 20:32:07,167 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 20:32:07,167 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 20:32:07,167 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 20:32:07,167 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 20:32:07,167 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 20:32:07,167 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 20:32:07,168 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 20:32:07,168 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 20:32:07,168 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 20:32:07,168 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 20:32:07,168 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 20:32:07,168 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 20:32:07,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 20:32:07,168 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 20:32:07,168 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 20:32:07,168 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 20:32:07,168 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 20:32:07,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 20:32:07,169 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 20:32:07,169 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 20:32:07,169 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 20:32:07,169 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 20:32:07,169 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 20:32:07,169 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-24 20:32:07,169 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 20:32:07,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-24 20:32:07,169 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 20:32:07,169 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 20:32:07,169 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 20:32:07,169 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> GemCutter 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 -> 846f3fa2b3520d0013071e1a40d4401eee84eafe31e419bacc7c09bfb8abae71 [2025-04-24 20:32:07,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 20:32:07,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 20:32:07,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 20:32:07,403 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 20:32:07,404 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 20:32:07,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/weaver/spaghetti.wvr.c [2025-04-24 20:32:08,681 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/dbd7c6925/02fb1b1717f8457b9565b58fffe026d9/FLAG04646388c [2025-04-24 20:32:08,906 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 20:32:08,906 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/spaghetti.wvr.c [2025-04-24 20:32:08,914 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/dbd7c6925/02fb1b1717f8457b9565b58fffe026d9/FLAG04646388c [2025-04-24 20:32:09,683 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/dbd7c6925/02fb1b1717f8457b9565b58fffe026d9 [2025-04-24 20:32:09,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 20:32:09,685 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 20:32:09,686 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 20:32:09,686 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 20:32:09,689 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 20:32:09,690 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 08:32:09" (1/1) ... [2025-04-24 20:32:09,690 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178f5f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 08:32:09, skipping insertion in model container [2025-04-24 20:32:09,690 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 08:32:09" (1/1) ... [2025-04-24 20:32:09,700 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 20:32:09,857 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/spaghetti.wvr.c[2341,2354] [2025-04-24 20:32:09,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 20:32:09,871 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 20:32:09,894 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/spaghetti.wvr.c[2341,2354] [2025-04-24 20:32:09,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 20:32:09,906 INFO L204 MainTranslator]: Completed translation [2025-04-24 20:32:09,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 08:32:09 WrapperNode [2025-04-24 20:32:09,907 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 20:32:09,908 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 20:32:09,908 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 20:32:09,908 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 20:32:09,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 08:32:09" (1/1) ... [2025-04-24 20:32:09,922 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 08:32:09" (1/1) ... [2025-04-24 20:32:09,939 INFO L138 Inliner]: procedures = 20, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2025-04-24 20:32:09,940 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 20:32:09,941 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 20:32:09,941 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 20:32:09,942 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 20:32:09,945 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 08:32:09" (1/1) ... [2025-04-24 20:32:09,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 08:32:09" (1/1) ... [2025-04-24 20:32:09,947 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 08:32:09" (1/1) ... [2025-04-24 20:32:09,948 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 08:32:09" (1/1) ... [2025-04-24 20:32:09,952 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 08:32:09" (1/1) ... [2025-04-24 20:32:09,957 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 08:32:09" (1/1) ... [2025-04-24 20:32:09,959 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 08:32:09" (1/1) ... [2025-04-24 20:32:09,961 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 08:32:09" (1/1) ... [2025-04-24 20:32:09,964 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 08:32:09" (1/1) ... [2025-04-24 20:32:09,966 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 20:32:09,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 20:32:09,969 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 20:32:09,969 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 20:32:09,969 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 08:32:09" (1/1) ... [2025-04-24 20:32:09,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 20:32:09,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 20:32:09,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-24 20:32:09,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-24 20:32:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 20:32:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-24 20:32:10,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-24 20:32:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-24 20:32:10,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-24 20:32:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-24 20:32:10,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-24 20:32:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-24 20:32:10,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-24 20:32:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-24 20:32:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 20:32:10,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 20:32:10,014 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-24 20:32:10,079 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 20:32:10,080 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 20:32:10,199 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 20:32:10,201 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 20:32:10,264 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-24 20:32:10,265 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2025-04-24 20:32:10,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 08:32:10 BoogieIcfgContainer [2025-04-24 20:32:10,265 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-24 20:32:10,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-24 20:32:10,267 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-24 20:32:10,270 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-24 20:32:10,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 08:32:09" (1/3) ... [2025-04-24 20:32:10,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f3f986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 08:32:10, skipping insertion in model container [2025-04-24 20:32:10,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 08:32:09" (2/3) ... [2025-04-24 20:32:10,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f3f986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 08:32:10, skipping insertion in model container [2025-04-24 20:32:10,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 08:32:10" (3/3) ... [2025-04-24 20:32:10,272 INFO L128 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.c [2025-04-24 20:32:10,281 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-24 20:32:10,282 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG spaghetti.wvr.c that has 5 procedures, 57 locations, 60 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-04-24 20:32:10,283 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-24 20:32:10,335 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-24 20:32:10,366 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 20:32:10,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-24 20:32:10,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 20:32:10,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-24 20:32:10,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-24 20:32:10,437 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 20:32:10,451 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-04-24 20:32:10,457 INFO L340 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, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@215a12a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 20:32:10,458 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-24 20:32:10,767 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-24 20:32:10,767 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 20:32:10,767 INFO L139 ounterexampleChecker]: Examining path program with hash 1224480938, occurence #1 [2025-04-24 20:32:10,767 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 20:32:10,767 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 20:32:10,774 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 20:32:10,774 INFO L85 PathProgramCache]: Analyzing trace with hash -725067258, now seen corresponding path program 1 times [2025-04-24 20:32:10,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 20:32:10,779 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316385677] [2025-04-24 20:32:10,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 20:32:10,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 20:32:10,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-04-24 20:32:10,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-04-24 20:32:10,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 20:32:10,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 20:32:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 20:32:10,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 20:32:10,905 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316385677] [2025-04-24 20:32:10,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316385677] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 20:32:10,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 20:32:10,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-24 20:32:10,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823970722] [2025-04-24 20:32:10,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 20:32:10,909 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-24 20:32:10,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 20:32:10,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-24 20:32:10,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-24 20:32:10,922 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 20:32:10,928 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 20:32:10,929 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 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) [2025-04-24 20:32:10,929 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 20:32:11,254 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 20:32:11,255 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-24 20:32:11,255 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-24 20:32:11,255 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 20:32:11,255 INFO L139 ounterexampleChecker]: Examining path program with hash -1848942974, occurence #1 [2025-04-24 20:32:11,255 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 20:32:11,255 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 20:32:11,256 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 20:32:11,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1390743308, now seen corresponding path program 1 times [2025-04-24 20:32:11,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 20:32:11,256 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167501291] [2025-04-24 20:32:11,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 20:32:11,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 20:32:11,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-04-24 20:32:11,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-04-24 20:32:11,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 20:32:11,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 20:32:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 20:32:11,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 20:32:11,760 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167501291] [2025-04-24 20:32:11,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167501291] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 20:32:11,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 20:32:11,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-24 20:32:11,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726866436] [2025-04-24 20:32:11,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 20:32:11,761 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 20:32:11,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 20:32:11,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 20:32:11,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-24 20:32:11,763 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 20:32:11,765 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 20:32:11,765 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2025-04-24 20:32:11,765 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 20:32:11,765 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 20:32:11,944 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 20:32:11,944 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 20:32:11,944 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-24 20:32:11,945 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-24 20:32:11,945 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 20:32:11,945 INFO L139 ounterexampleChecker]: Examining path program with hash -2040758267, occurence #1 [2025-04-24 20:32:11,945 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 20:32:11,945 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 20:32:11,945 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 20:32:11,946 INFO L85 PathProgramCache]: Analyzing trace with hash -186910704, now seen corresponding path program 2 times [2025-04-24 20:32:11,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 20:32:11,946 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875000291] [2025-04-24 20:32:11,946 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-24 20:32:11,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 20:32:11,958 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 129 statements into 1 equivalence classes. [2025-04-24 20:32:11,997 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-04-24 20:32:11,997 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-24 20:32:11,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 20:32:12,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 20:32:12,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 20:32:12,152 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875000291] [2025-04-24 20:32:12,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875000291] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 20:32:12,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 20:32:12,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-24 20:32:12,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638494938] [2025-04-24 20:32:12,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 20:32:12,153 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-24 20:32:12,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 20:32:12,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-24 20:32:12,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-24 20:32:12,154 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 20:32:12,154 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 20:32:12,154 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2025-04-24 20:32:12,154 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 20:32:12,154 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-04-24 20:32:12,154 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 20:32:14,910 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 20:32:14,911 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 20:32:14,911 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-24 20:32:14,915 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2025-04-24 20:32:14,916 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2025-04-24 20:32:14,916 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-04-24 20:32:14,916 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-04-24 20:32:14,916 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-04-24 20:32:14,916 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-24 20:32:14,921 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1] [2025-04-24 20:32:14,923 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-24 20:32:14,923 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-24 20:32:14,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-04-24 20:32:14,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.04 08:32:14 BasicIcfg [2025-04-24 20:32:14,934 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-24 20:32:14,934 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-24 20:32:14,934 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-24 20:32:14,935 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-24 20:32:14,936 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 08:32:10" (3/4) ... [2025-04-24 20:32:14,938 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-24 20:32:14,940 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-04-24 20:32:14,940 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-04-24 20:32:14,940 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-04-24 20:32:14,940 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2025-04-24 20:32:14,943 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2025-04-24 20:32:14,943 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2025-04-24 20:32:14,944 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-04-24 20:32:14,944 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-04-24 20:32:15,001 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.graphml [2025-04-24 20:32:15,001 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.yml [2025-04-24 20:32:15,001 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-24 20:32:15,002 INFO L158 Benchmark]: Toolchain (without parser) took 5316.82ms. Allocated memory was 142.6MB in the beginning and 453.0MB in the end (delta: 310.4MB). Free memory was 112.0MB in the beginning and 250.2MB in the end (delta: -138.2MB). Peak memory consumption was 167.4MB. Max. memory is 16.1GB. [2025-04-24 20:32:15,003 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 201.3MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 20:32:15,003 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.97ms. Allocated memory is still 142.6MB. Free memory was 111.6MB in the beginning and 98.1MB in the end (delta: 13.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-24 20:32:15,003 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.21ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 96.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 20:32:15,003 INFO L158 Benchmark]: Boogie Preprocessor took 25.87ms. Allocated memory is still 142.6MB. Free memory was 96.4MB in the beginning and 95.6MB in the end (delta: 821.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 20:32:15,004 INFO L158 Benchmark]: RCFGBuilder took 296.59ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 75.6MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-24 20:32:15,004 INFO L158 Benchmark]: TraceAbstraction took 4667.26ms. Allocated memory was 142.6MB in the beginning and 453.0MB in the end (delta: 310.4MB). Free memory was 75.2MB in the beginning and 253.5MB in the end (delta: -178.3MB). Peak memory consumption was 133.9MB. Max. memory is 16.1GB. [2025-04-24 20:32:15,005 INFO L158 Benchmark]: Witness Printer took 67.30ms. Allocated memory is still 453.0MB. Free memory was 253.5MB in the beginning and 250.2MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 20:32:15,006 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 201.3MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 220.97ms. Allocated memory is still 142.6MB. Free memory was 111.6MB in the beginning and 98.1MB in the end (delta: 13.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.21ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 96.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.87ms. Allocated memory is still 142.6MB. Free memory was 96.4MB in the beginning and 95.6MB in the end (delta: 821.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 296.59ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 75.6MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4667.26ms. Allocated memory was 142.6MB in the beginning and 453.0MB in the end (delta: 310.4MB). Free memory was 75.2MB in the beginning and 253.5MB in the end (delta: -178.3MB). Peak memory consumption was 133.9MB. Max. memory is 16.1GB. * Witness Printer took 67.30ms. Allocated memory is still 453.0MB. Free memory was 253.5MB in the beginning and 250.2MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Partial order reduction statistics Independence relation #1 benchmarks: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 163824, independent: 143990, independent conditional: 140729, independent unconditional: 3261, dependent: 19834, dependent conditional: 19804, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 147490, independent: 143990, independent conditional: 140729, independent unconditional: 3261, dependent: 3500, dependent conditional: 3470, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 147490, independent: 143990, independent conditional: 140729, independent unconditional: 3261, dependent: 3500, dependent conditional: 3470, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 150960, independent: 143990, independent conditional: 140729, independent unconditional: 3261, dependent: 6970, dependent conditional: 6940, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 150960, independent: 143990, independent conditional: 0, independent unconditional: 143990, dependent: 6970, dependent conditional: 0, dependent unconditional: 6970, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 150960, independent: 143990, independent conditional: 0, independent unconditional: 143990, dependent: 6970, dependent conditional: 0, dependent unconditional: 6970, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2497, independent: 2467, independent conditional: 0, independent unconditional: 2467, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2497, independent: 2440, independent conditional: 0, independent unconditional: 2440, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 57, independent: 27, independent conditional: 0, independent unconditional: 27, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 57, independent: 27, independent conditional: 0, independent unconditional: 27, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 355, independent: 149, independent conditional: 0, independent unconditional: 149, dependent: 206, dependent conditional: 0, dependent unconditional: 206, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 150960, independent: 141523, independent conditional: 0, independent unconditional: 141523, dependent: 6940, dependent conditional: 0, dependent unconditional: 6940, unknown: 2497, unknown conditional: 0, unknown unconditional: 2497] , Statistics on independence cache: Total cache size (in pairs): 2497, Positive cache size: 2467, Positive conditional cache size: 0, Positive unconditional cache size: 2467, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 147669, Maximal queried relation: 1, Independence queries for same thread: 16334, Persistent sets #1 benchmarks: Persistent set computation time: 1.3s, Number of persistent set computation: 19260, Number of trivial persistent sets: 15484, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3291, independent: 3261, independent conditional: 0, independent unconditional: 3261, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 163824, independent: 143990, independent conditional: 140729, independent unconditional: 3261, dependent: 19834, dependent conditional: 19804, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 147490, independent: 143990, independent conditional: 140729, independent unconditional: 3261, dependent: 3500, dependent conditional: 3470, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 147490, independent: 143990, independent conditional: 140729, independent unconditional: 3261, dependent: 3500, dependent conditional: 3470, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 150960, independent: 143990, independent conditional: 140729, independent unconditional: 3261, dependent: 6970, dependent conditional: 6940, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 150960, independent: 143990, independent conditional: 0, independent unconditional: 143990, dependent: 6970, dependent conditional: 0, dependent unconditional: 6970, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 150960, independent: 143990, independent conditional: 0, independent unconditional: 143990, dependent: 6970, dependent conditional: 0, dependent unconditional: 6970, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2497, independent: 2467, independent conditional: 0, independent unconditional: 2467, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2497, independent: 2440, independent conditional: 0, independent unconditional: 2440, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 57, independent: 27, independent conditional: 0, independent unconditional: 27, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 57, independent: 27, independent conditional: 0, independent unconditional: 27, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 355, independent: 149, independent conditional: 0, independent unconditional: 149, dependent: 206, dependent conditional: 0, dependent unconditional: 206, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 150960, independent: 141523, independent conditional: 0, independent unconditional: 141523, dependent: 6940, dependent conditional: 0, dependent unconditional: 6940, unknown: 2497, unknown conditional: 0, unknown unconditional: 2497] , Statistics on independence cache: Total cache size (in pairs): 2497, Positive cache size: 2467, Positive conditional cache size: 0, Positive unconditional cache size: 2467, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 147669, Maximal queried relation: 1, Independence queries for same thread: 16334 - PositiveResult [Line: 97]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 9 procedures, 97 locations, 112 edges, 5 error locations. Started 1 CEGAR loops. OverallTime: 4.5s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 2, EmptinessCheckTime: 3.6s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 307 NumberOfCodeBlocks, 307 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 304 ConstructedInterpolants, 0 QuantifiedInterpolants, 428 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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, ConComCheckerStatistics: SuccessfulCommutativityProofs: 0, ConComChecker Statistics: CheckTime [ms]: 0, ConditionCalculationTime [ms]: 0, ConditionCalculations: 0, QuantifiedConditions: 0, TraceChecks: 0, UnknownTraceChecks: 0, UnsatisfiedConditions: 0, ImperfectProofs: 0 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-24 20:32:15,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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