./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-1_2-join.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_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/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_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-1_2-join.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/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_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/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 fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:52:05,952 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:52:06,009 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 11:52:06,014 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:52:06,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:52:06,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:52:06,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:52:06,038 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:52:06,039 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:52:06,039 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:52:06,039 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:52:06,039 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:52:06,039 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:52:06,040 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:52:06,040 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:52:06,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:52:06,040 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:52:06,040 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:52:06,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:52:06,040 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:52:06,040 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:52:06,040 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:52:06,040 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:52:06,041 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:52:06,041 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:52:06,041 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:52:06,041 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:52:06,041 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:52:06,041 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:52:06,041 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:52:06,041 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:52:06,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:52:06,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:52:06,042 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:52:06,042 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:52:06,042 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:52:06,042 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:52:06,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:52:06,042 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:52:06,042 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:52:06,042 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:52:06,042 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:52:06,042 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:52:06,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:52:06,043 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:52:06,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:52:06,043 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:52:06,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:52:06,043 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_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/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 -> fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f [2024-12-02 11:52:06,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:52:06,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:52:06,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:52:06,294 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:52:06,294 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:52:06,295 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/ldv-races/race-1_2-join.i [2024-12-02 11:52:08,903 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/bin/uautomizer-verify-84ZbGMXZE1/data/439a19972/2a7843ea1ba246118addd42cbd8301e9/FLAG5164f2a3a [2024-12-02 11:52:09,180 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:52:09,181 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/sv-benchmarks/c/ldv-races/race-1_2-join.i [2024-12-02 11:52:09,198 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/bin/uautomizer-verify-84ZbGMXZE1/data/439a19972/2a7843ea1ba246118addd42cbd8301e9/FLAG5164f2a3a [2024-12-02 11:52:09,212 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/bin/uautomizer-verify-84ZbGMXZE1/data/439a19972/2a7843ea1ba246118addd42cbd8301e9 [2024-12-02 11:52:09,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:52:09,216 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:52:09,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:52:09,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:52:09,220 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:52:09,221 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:52:09" (1/1) ... [2024-12-02 11:52:09,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@529e1d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:52:09, skipping insertion in model container [2024-12-02 11:52:09,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:52:09" (1/1) ... [2024-12-02 11:52:09,260 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:52:09,786 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_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2024-12-02 11:52:09,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:52:09,821 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:52:09,872 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_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2024-12-02 11:52:09,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:52:09,964 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:52:09,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:52:09 WrapperNode [2024-12-02 11:52:09,964 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:52:09,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:52:09,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:52:09,965 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:52:09,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:52:09" (1/1) ... [2024-12-02 11:52:09,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:52:09" (1/1) ... [2024-12-02 11:52:10,001 INFO L138 Inliner]: procedures = 483, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 85 [2024-12-02 11:52:10,001 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:52:10,002 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:52:10,002 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:52:10,002 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:52:10,009 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:52:09" (1/1) ... [2024-12-02 11:52:10,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:52:09" (1/1) ... [2024-12-02 11:52:10,012 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:52:09" (1/1) ... [2024-12-02 11:52:10,022 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 5, 1]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-12-02 11:52:10,022 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:52:09" (1/1) ... [2024-12-02 11:52:10,023 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:52:09" (1/1) ... [2024-12-02 11:52:10,030 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:52:09" (1/1) ... [2024-12-02 11:52:10,031 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:52:09" (1/1) ... [2024-12-02 11:52:10,032 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:52:09" (1/1) ... [2024-12-02 11:52:10,034 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:52:09" (1/1) ... [2024-12-02 11:52:10,035 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:52:09" (1/1) ... [2024-12-02 11:52:10,038 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:52:10,039 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:52:10,039 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:52:10,039 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:52:10,040 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:52:09" (1/1) ... [2024-12-02 11:52:10,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:52:10,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:52:10,063 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:52:10,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:52:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 11:52:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 11:52:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 11:52:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 11:52:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:52:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 11:52:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 11:52:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 11:52:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:52:10,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:52:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 11:52:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 11:52:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 11:52:10,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 11:52:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:52:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 11:52:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 11:52:10,090 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 11:52:10,304 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:52:10,306 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:52:10,436 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 11:52:10,436 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:52:10,513 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:52:10,513 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 11:52:10,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:52:10 BoogieIcfgContainer [2024-12-02 11:52:10,514 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:52:10,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:52:10,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:52:10,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:52:10,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:52:09" (1/3) ... [2024-12-02 11:52:10,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b10fb82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:52:10, skipping insertion in model container [2024-12-02 11:52:10,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:52:09" (2/3) ... [2024-12-02 11:52:10,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b10fb82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:52:10, skipping insertion in model container [2024-12-02 11:52:10,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:52:10" (3/3) ... [2024-12-02 11:52:10,521 INFO L128 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2024-12-02 11:52:10,532 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:52:10,533 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG race-1_2-join.i that has 2 procedures, 33 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2024-12-02 11:52:10,533 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 11:52:10,563 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-12-02 11:52:10,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 37 transitions, 81 flow [2024-12-02 11:52:10,612 INFO L124 PetriNetUnfolderBase]: 4/40 cut-off events. [2024-12-02 11:52:10,614 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 11:52:10,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 40 events. 4/40 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 65 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 17. Up to 3 conditions per place. [2024-12-02 11:52:10,616 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 37 transitions, 81 flow [2024-12-02 11:52:10,618 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 28 transitions, 62 flow [2024-12-02 11:52:10,624 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:52:10,634 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;@1b5f579e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:52:10,635 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-12-02 11:52:10,637 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 11:52:10,637 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-12-02 11:52:10,637 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 11:52:10,637 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:52:10,638 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 11:52:10,638 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 11:52:10,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:52:10,642 INFO L85 PathProgramCache]: Analyzing trace with hash 275133, now seen corresponding path program 1 times [2024-12-02 11:52:10,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:52:10,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755278987] [2024-12-02 11:52:10,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:52:10,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:52:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:52:10,943 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 11:52:10,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:52:10,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755278987] [2024-12-02 11:52:10,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755278987] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:52:10,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:52:10,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:52:10,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806705478] [2024-12-02 11:52:10,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:52:10,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:52:10,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:52:10,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:52:10,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:52:10,991 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-12-02 11:52:10,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 11:52:10,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:52:10,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-12-02 11:52:10,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:52:11,053 INFO L124 PetriNetUnfolderBase]: 15/55 cut-off events. [2024-12-02 11:52:11,053 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 11:52:11,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 55 events. 15/55 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 146 event pairs, 15 based on Foata normal form. 2/50 useless extension candidates. Maximal degree in co-relation 85. Up to 43 conditions per place. [2024-12-02 11:52:11,055 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 8 selfloop transitions, 2 changer transitions 7/21 dead transitions. [2024-12-02 11:52:11,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 80 flow [2024-12-02 11:52:11,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:52:11,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 11:52:11,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-12-02 11:52:11,065 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4144144144144144 [2024-12-02 11:52:11,066 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 62 flow. Second operand 3 states and 46 transitions. [2024-12-02 11:52:11,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 80 flow [2024-12-02 11:52:11,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 11:52:11,072 INFO L231 Difference]: Finished difference. Result has 25 places, 14 transitions, 33 flow [2024-12-02 11:52:11,074 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=33, PETRI_PLACES=25, PETRI_TRANSITIONS=14} [2024-12-02 11:52:11,076 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -6 predicate places. [2024-12-02 11:52:11,077 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 14 transitions, 33 flow [2024-12-02 11:52:11,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 11:52:11,077 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:52:11,077 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:52:11,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 11:52:11,077 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 11:52:11,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:52:11,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1756354669, now seen corresponding path program 1 times [2024-12-02 11:52:11,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:52:11,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089530587] [2024-12-02 11:52:11,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:52:11,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:52:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:52:11,193 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 11:52:11,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:52:11,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089530587] [2024-12-02 11:52:11,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089530587] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:52:11,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:52:11,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:52:11,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771918863] [2024-12-02 11:52:11,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:52:11,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:52:11,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:52:11,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:52:11,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:52:11,199 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-12-02 11:52:11,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 14 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 11:52:11,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:52:11,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-12-02 11:52:11,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:52:11,235 INFO L124 PetriNetUnfolderBase]: 9/36 cut-off events. [2024-12-02 11:52:11,235 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 11:52:11,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 36 events. 9/36 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 65 event pairs, 6 based on Foata normal form. 5/39 useless extension candidates. Maximal degree in co-relation 65. Up to 26 conditions per place. [2024-12-02 11:52:11,236 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 10 selfloop transitions, 2 changer transitions 3/18 dead transitions. [2024-12-02 11:52:11,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 18 transitions, 71 flow [2024-12-02 11:52:11,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:52:11,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 11:52:11,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-12-02 11:52:11,237 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-12-02 11:52:11,237 INFO L175 Difference]: Start difference. First operand has 25 places, 14 transitions, 33 flow. Second operand 3 states and 55 transitions. [2024-12-02 11:52:11,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 18 transitions, 71 flow [2024-12-02 11:52:11,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 18 transitions, 67 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 11:52:11,238 INFO L231 Difference]: Finished difference. Result has 19 places, 14 transitions, 37 flow [2024-12-02 11:52:11,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=19, PETRI_TRANSITIONS=14} [2024-12-02 11:52:11,239 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -12 predicate places. [2024-12-02 11:52:11,239 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 14 transitions, 37 flow [2024-12-02 11:52:11,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 11:52:11,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:52:11,240 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:52:11,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:52:11,240 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 11:52:11,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:52:11,241 INFO L85 PathProgramCache]: Analyzing trace with hash 474236761, now seen corresponding path program 1 times [2024-12-02 11:52:11,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:52:11,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701265849] [2024-12-02 11:52:11,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:52:11,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:52:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:52:11,266 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:52:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:52:11,294 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 11:52:11,294 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 11:52:11,295 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-12-02 11:52:11,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-12-02 11:52:11,297 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-12-02 11:52:11,297 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-12-02 11:52:11,297 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-12-02 11:52:11,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 11:52:11,297 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-12-02 11:52:11,317 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-12-02 11:52:11,317 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 11:52:11,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 11:52:11 BasicIcfg [2024-12-02 11:52:11,323 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 11:52:11,323 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 11:52:11,323 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 11:52:11,323 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 11:52:11,324 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:52:10" (3/4) ... [2024-12-02 11:52:11,325 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-02 11:52:11,363 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 8. [2024-12-02 11:52:11,404 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 11:52:11,405 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 11:52:11,405 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 11:52:11,405 INFO L158 Benchmark]: Toolchain (without parser) took 2189.38ms. Allocated memory is still 142.6MB. Free memory was 115.2MB in the beginning and 61.1MB in the end (delta: 54.2MB). Peak memory consumption was 52.9MB. Max. memory is 16.1GB. [2024-12-02 11:52:11,405 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 142.6MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:52:11,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 747.28ms. Allocated memory is still 142.6MB. Free memory was 115.2MB in the beginning and 110.7MB in the end (delta: 4.5MB). Peak memory consumption was 67.0MB. Max. memory is 16.1GB. [2024-12-02 11:52:11,406 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.53ms. Allocated memory is still 142.6MB. Free memory was 110.7MB in the beginning and 108.3MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:52:11,406 INFO L158 Benchmark]: Boogie Preprocessor took 36.16ms. Allocated memory is still 142.6MB. Free memory was 108.3MB in the beginning and 105.3MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:52:11,406 INFO L158 Benchmark]: RCFGBuilder took 475.15ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 76.9MB in the end (delta: 28.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-12-02 11:52:11,406 INFO L158 Benchmark]: TraceAbstraction took 807.77ms. Allocated memory is still 142.6MB. Free memory was 76.3MB in the beginning and 66.6MB in the end (delta: 9.7MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2024-12-02 11:52:11,406 INFO L158 Benchmark]: Witness Printer took 81.37ms. Allocated memory is still 142.6MB. Free memory was 66.6MB in the beginning and 61.1MB in the end (delta: 5.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:52:11,408 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 142.6MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 747.28ms. Allocated memory is still 142.6MB. Free memory was 115.2MB in the beginning and 110.7MB in the end (delta: 4.5MB). Peak memory consumption was 67.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.53ms. Allocated memory is still 142.6MB. Free memory was 110.7MB in the beginning and 108.3MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.16ms. Allocated memory is still 142.6MB. Free memory was 108.3MB in the beginning and 105.3MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 475.15ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 76.9MB in the end (delta: 28.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 807.77ms. Allocated memory is still 142.6MB. Free memory was 76.3MB in the beginning and 66.6MB in the end (delta: 9.7MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * Witness Printer took 81.37ms. Allocated memory is still 142.6MB. Free memory was 66.6MB in the beginning and 61.1MB in the end (delta: 5.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) VAL [\old(expression)=1, expression=1, mutex={3:0}, pdev=1, t1=0] [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [\old(arg)={0:0}, mutex={3:0}, pdev=1, t1=0] [L1714] 0 pdev = 2 VAL [\old(arg)={0:0}, arg={0:0}, mutex={3:0}, pdev=2, t1=0] [L1702] 1 pdev = 6 VAL [\old(arg)={0:0}, arg={0:0}, mutex={3:0}, pdev=6, t1=0] [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(arg)={0:0}, \old(expression)=0, arg={0:0}, expression=0, mutex={3:0}, pdev=6, t1=0] - UnprovableResult [Line: 1695]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 41 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54 IncrementalHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 7 mSDtfsCounter, 54 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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: No data available RESULT: Ultimate proved your program to be incorrect! [2024-12-02 11:52:11,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30a0007b-dbc3-4b1d-b5ef-9e4bb3efab75/bin/uautomizer-verify-84ZbGMXZE1/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE