./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c390de-434c-4900-9e87-7b6240a27750/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c390de-434c-4900-9e87-7b6240a27750/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c390de-434c-4900-9e87-7b6240a27750/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c390de-434c-4900-9e87-7b6240a27750/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c390de-434c-4900-9e87-7b6240a27750/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c390de-434c-4900-9e87-7b6240a27750/bin/uautomizer-verify-84ZbGMXZE1 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:35:25,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:35:25,582 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c390de-434c-4900-9e87-7b6240a27750/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:35:25,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:35:25,587 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:35:25,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:35:25,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:35:25,611 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:35:25,611 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:35:25,611 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:35:25,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:35:25,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:35:25,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:35:25,612 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:35:25,612 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:35:25,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:35:25,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:35:25,612 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:35:25,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:35:25,613 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:35:25,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:35:25,613 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:35:25,613 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:35:25,613 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:35:25,613 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:35:25,613 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:35:25,613 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:35:25,613 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:35:25,613 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:35:25,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:35:25,614 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:35:25,614 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:35:25,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:35:25,614 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:35:25,614 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:35:25,614 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:35:25,614 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:35:25,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:35:25,614 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:35:25,614 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:35:25,614 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:35:25,615 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:35:25,615 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:35:25,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:35:25,615 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:35:25,615 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:35:25,615 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:35:25,615 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:35:25,615 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c390de-434c-4900-9e87-7b6240a27750/bin/uautomizer-verify-84ZbGMXZE1 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 -> 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 -> b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 [2024-12-02 15:35:25,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:35:25,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:35:25,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:35:25,896 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:35:25,896 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:35:25,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c390de-434c-4900-9e87-7b6240a27750/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2024-12-02 15:35:28,835 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c390de-434c-4900-9e87-7b6240a27750/bin/uautomizer-verify-84ZbGMXZE1/data/b49d59b34/487dc85557064b8e9320ad8820c07191/FLAG557f8d12e [2024-12-02 15:35:29,065 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:35:29,066 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c390de-434c-4900-9e87-7b6240a27750/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2024-12-02 15:35:29,080 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c390de-434c-4900-9e87-7b6240a27750/bin/uautomizer-verify-84ZbGMXZE1/data/b49d59b34/487dc85557064b8e9320ad8820c07191/FLAG557f8d12e [2024-12-02 15:35:29,096 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c390de-434c-4900-9e87-7b6240a27750/bin/uautomizer-verify-84ZbGMXZE1/data/b49d59b34/487dc85557064b8e9320ad8820c07191 [2024-12-02 15:35:29,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:35:29,101 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:35:29,102 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:35:29,102 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:35:29,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:35:29,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:35:29" (1/1) ... [2024-12-02 15:35:29,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f7d54c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:29, skipping insertion in model container [2024-12-02 15:35:29,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:35:29" (1/1) ... [2024-12-02 15:35:29,140 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:35:29,432 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c390de-434c-4900-9e87-7b6240a27750/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2024-12-02 15:35:29,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:35:29,476 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:35:29,516 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c390de-434c-4900-9e87-7b6240a27750/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2024-12-02 15:35:29,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:35:29,566 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:35:29,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:29 WrapperNode [2024-12-02 15:35:29,567 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:35:29,569 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:35:29,569 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:35:29,569 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:35:29,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:29" (1/1) ... [2024-12-02 15:35:29,590 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:29" (1/1) ... [2024-12-02 15:35:29,612 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 100 [2024-12-02 15:35:29,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:35:29,613 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:35:29,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:35:29,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:35:29,624 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:29" (1/1) ... [2024-12-02 15:35:29,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:29" (1/1) ... [2024-12-02 15:35:29,627 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:29" (1/1) ... [2024-12-02 15:35:29,643 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-12-02 15:35:29,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:29" (1/1) ... [2024-12-02 15:35:29,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:29" (1/1) ... [2024-12-02 15:35:29,650 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:29" (1/1) ... [2024-12-02 15:35:29,651 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:29" (1/1) ... [2024-12-02 15:35:29,656 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:29" (1/1) ... [2024-12-02 15:35:29,658 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:29" (1/1) ... [2024-12-02 15:35:29,659 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:29" (1/1) ... [2024-12-02 15:35:29,662 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:35:29,663 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:35:29,663 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:35:29,663 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:35:29,664 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:29" (1/1) ... [2024-12-02 15:35:29,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:35:29,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c390de-434c-4900-9e87-7b6240a27750/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:35:29,697 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c390de-434c-4900-9e87-7b6240a27750/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:35:29,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c390de-434c-4900-9e87-7b6240a27750/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:35:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 15:35:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 15:35:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 15:35:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 15:35:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 15:35:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 15:35:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 15:35:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 15:35:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 15:35:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:35:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 15:35:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-12-02 15:35:29,730 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-12-02 15:35:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 15:35:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:35:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 15:35:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 15:35:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 15:35:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 15:35:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:35:29,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:35:29,732 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 15:35:29,872 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:35:29,874 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:35:30,118 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 15:35:30,118 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:35:30,266 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:35:30,266 INFO L312 CfgBuilder]: Removed 9 assume(true) statements. [2024-12-02 15:35:30,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:35:30 BoogieIcfgContainer [2024-12-02 15:35:30,267 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:35:30,270 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:35:30,270 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:35:30,275 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:35:30,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:35:29" (1/3) ... [2024-12-02 15:35:30,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff99077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:35:30, skipping insertion in model container [2024-12-02 15:35:30,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:29" (2/3) ... [2024-12-02 15:35:30,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff99077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:35:30, skipping insertion in model container [2024-12-02 15:35:30,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:35:30" (3/3) ... [2024-12-02 15:35:30,277 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2024-12-02 15:35:30,288 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:35:30,289 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_61-invariant_racing.i that has 2 procedures, 61 locations, 1 initial locations, 9 loop locations, and 1 error locations. [2024-12-02 15:35:30,290 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 15:35:30,331 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-12-02 15:35:30,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 78 transitions, 163 flow [2024-12-02 15:35:30,420 INFO L124 PetriNetUnfolderBase]: 26/116 cut-off events. [2024-12-02 15:35:30,422 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 15:35:30,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 116 events. 26/116 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 386 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2024-12-02 15:35:30,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 78 transitions, 163 flow [2024-12-02 15:35:30,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 76 transitions, 156 flow [2024-12-02 15:35:30,439 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:35:30,449 INFO L333 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=PETRI_NET, 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;@27bc54c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:35:30,450 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 15:35:30,458 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:35:30,459 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-12-02 15:35:30,459 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 15:35:30,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:35:30,459 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-12-02 15:35:30,460 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-12-02 15:35:30,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:35:30,466 INFO L85 PathProgramCache]: Analyzing trace with hash -426089304, now seen corresponding path program 1 times [2024-12-02 15:35:30,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:35:30,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100749557] [2024-12-02 15:35:30,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:35:30,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:35:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:35:30,588 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 15:35:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:35:30,632 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 15:35:30,633 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 15:35:30,635 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-12-02 15:35:30,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-12-02 15:35:30,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 15:35:30,638 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-12-02 15:35:30,644 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 15:35:30,644 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-02 15:35:30,668 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-12-02 15:35:30,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 114 transitions, 244 flow [2024-12-02 15:35:30,712 INFO L124 PetriNetUnfolderBase]: 44/197 cut-off events. [2024-12-02 15:35:30,712 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2024-12-02 15:35:30,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 197 events. 44/197 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 856 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 120. Up to 9 conditions per place. [2024-12-02 15:35:30,715 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 114 transitions, 244 flow [2024-12-02 15:35:30,717 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 114 transitions, 244 flow [2024-12-02 15:35:30,719 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:35:30,720 INFO L333 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=PETRI_NET, 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;@27bc54c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:35:30,720 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 15:35:30,730 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:35:30,731 INFO L124 PetriNetUnfolderBase]: 9/57 cut-off events. [2024-12-02 15:35:30,731 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-12-02 15:35:30,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:35:30,731 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-12-02 15:35:30,731 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-12-02 15:35:30,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:35:30,732 INFO L85 PathProgramCache]: Analyzing trace with hash 802918661, now seen corresponding path program 1 times [2024-12-02 15:35:30,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:35:30,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755466250] [2024-12-02 15:35:30,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:35:30,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:35:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:35:30,763 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 15:35:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:35:30,794 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 15:35:30,794 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 15:35:30,794 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-12-02 15:35:30,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-12-02 15:35:30,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:35:30,794 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-12-02 15:35:30,795 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 15:35:30,795 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-12-02 15:35:30,826 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-12-02 15:35:30,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 150 transitions, 327 flow [2024-12-02 15:35:30,899 INFO L124 PetriNetUnfolderBase]: 65/289 cut-off events. [2024-12-02 15:35:30,899 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2024-12-02 15:35:30,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 289 events. 65/289 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1390 event pairs, 1 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 208. Up to 12 conditions per place. [2024-12-02 15:35:30,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 150 transitions, 327 flow [2024-12-02 15:35:30,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 150 transitions, 327 flow [2024-12-02 15:35:30,907 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:35:30,907 INFO L333 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=PETRI_NET, 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;@27bc54c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:35:30,908 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 15:35:30,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:35:30,917 INFO L124 PetriNetUnfolderBase]: 9/69 cut-off events. [2024-12-02 15:35:30,917 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 15:35:30,917 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:35:30,917 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:35:30,917 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-12-02 15:35:30,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:35:30,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1629622980, now seen corresponding path program 1 times [2024-12-02 15:35:30,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:35:30,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898415315] [2024-12-02 15:35:30,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:35:30,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:35:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:35:31,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:35:31,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:35:31,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898415315] [2024-12-02 15:35:31,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898415315] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:35:31,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:35:31,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:35:31,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451737130] [2024-12-02 15:35:31,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:35:31,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:35:31,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:35:31,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:35:31,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:35:31,069 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 150 [2024-12-02 15:35:31,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 150 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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) [2024-12-02 15:35:31,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:35:31,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 150 [2024-12-02 15:35:31,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:35:52,823 INFO L124 PetriNetUnfolderBase]: 161208/266606 cut-off events. [2024-12-02 15:35:52,823 INFO L125 PetriNetUnfolderBase]: For 4889/4889 co-relation queries the response was YES. [2024-12-02 15:35:53,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487203 conditions, 266606 events. 161208/266606 cut-off events. For 4889/4889 co-relation queries the response was YES. Maximal size of possible extension queue 5632. Compared 2752317 event pairs, 100036 based on Foata normal form. 63712/316308 useless extension candidates. Maximal degree in co-relation 26830. Up to 219074 conditions per place. [2024-12-02 15:35:54,067 INFO L140 encePairwiseOnDemand]: 120/150 looper letters, 77 selfloop transitions, 2 changer transitions 1/138 dead transitions. [2024-12-02 15:35:54,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 138 transitions, 463 flow [2024-12-02 15:35:54,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:35:54,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 15:35:54,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2024-12-02 15:35:54,223 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-12-02 15:35:54,224 INFO L175 Difference]: Start difference. First operand has 124 places, 150 transitions, 327 flow. Second operand 3 states and 288 transitions. [2024-12-02 15:35:54,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 138 transitions, 463 flow [2024-12-02 15:35:54,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 138 transitions, 463 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 15:35:54,240 INFO L231 Difference]: Finished difference. Result has 127 places, 123 transitions, 280 flow [2024-12-02 15:35:54,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=127, PETRI_TRANSITIONS=123} [2024-12-02 15:35:54,247 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 3 predicate places. [2024-12-02 15:35:54,248 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 123 transitions, 280 flow [2024-12-02 15:35:54,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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) [2024-12-02 15:35:54,248 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:35:54,248 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-12-02 15:35:54,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:35:54,248 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-12-02 15:35:54,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:35:54,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1630353767, now seen corresponding path program 1 times [2024-12-02 15:35:54,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:35:54,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673250236] [2024-12-02 15:35:54,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:35:54,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:35:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:35:54,280 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 15:35:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:35:54,304 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 15:35:54,304 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 15:35:54,304 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-12-02 15:35:54,304 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-12-02 15:35:54,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:35:54,305 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 15:35:54,306 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 15:35:54,306 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-12-02 15:35:54,341 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 15:35:54,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 186 transitions, 412 flow [2024-12-02 15:35:54,380 INFO L124 PetriNetUnfolderBase]: 94/405 cut-off events. [2024-12-02 15:35:54,380 INFO L125 PetriNetUnfolderBase]: For 48/54 co-relation queries the response was YES. [2024-12-02 15:35:54,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 405 events. 94/405 cut-off events. For 48/54 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2061 event pairs, 6 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 313. Up to 32 conditions per place. [2024-12-02 15:35:54,382 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 186 transitions, 412 flow [2024-12-02 15:35:54,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 186 transitions, 412 flow [2024-12-02 15:35:54,388 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:35:54,389 INFO L333 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=PETRI_NET, 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;@27bc54c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:35:54,389 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 15:35:54,394 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:35:54,395 INFO L124 PetriNetUnfolderBase]: 9/69 cut-off events. [2024-12-02 15:35:54,395 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 15:35:54,395 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:35:54,395 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:35:54,395 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-12-02 15:35:54,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:35:54,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1989013258, now seen corresponding path program 1 times [2024-12-02 15:35:54,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:35:54,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166760335] [2024-12-02 15:35:54,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:35:54,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:35:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:35:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:35:54,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:35:54,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166760335] [2024-12-02 15:35:54,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166760335] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:35:54,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:35:54,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:35:54,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711263310] [2024-12-02 15:35:54,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:35:54,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:35:54,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:35:54,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:35:54,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:35:54,444 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 186 [2024-12-02 15:35:54,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 186 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2024-12-02 15:35:54,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:35:54,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 186 [2024-12-02 15:35:54,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand