./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/twostage_3.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_730730bf-c799-496e-b77a-17763b7f3018/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730730bf-c799-496e-b77a-17763b7f3018/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730730bf-c799-496e-b77a-17763b7f3018/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730730bf-c799-496e-b77a-17763b7f3018/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/twostage_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730730bf-c799-496e-b77a-17763b7f3018/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730730bf-c799-496e-b77a-17763b7f3018/bin/uautomizer-verify-aQ6SnzHsRB --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 1032ef3fe166161226ca7e81ea27802cfc3f516ad1e4b45c387461fe1ddeccf8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:42:39,053 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:42:39,130 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730730bf-c799-496e-b77a-17763b7f3018/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:42:39,137 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:42:39,137 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:42:39,167 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:42:39,168 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:42:39,169 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:42:39,169 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:42:39,169 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:42:39,169 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:42:39,170 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:42:39,170 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:42:39,170 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:42:39,171 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:42:39,171 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:42:39,171 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:42:39,171 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:42:39,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:42:39,172 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:42:39,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:42:39,172 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:42:39,172 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:42:39,172 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:42:39,173 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:42:39,173 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:42:39,173 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:42:39,173 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:42:39,174 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:42:39,174 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:42:39,174 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:42:39,174 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:42:39,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:42:39,174 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:42:39,175 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:42:39,175 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:42:39,175 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:42:39,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:42:39,175 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:42:39,176 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:42:39,176 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:42:39,176 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:42:39,176 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:42:39,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:42:39,176 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:42:39,176 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:42:39,177 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:42:39,177 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:42:39,177 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_730730bf-c799-496e-b77a-17763b7f3018/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 1032ef3fe166161226ca7e81ea27802cfc3f516ad1e4b45c387461fe1ddeccf8 [2024-11-28 02:42:39,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:42:39,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:42:39,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:42:39,608 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:42:39,609 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:42:39,610 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730730bf-c799-496e-b77a-17763b7f3018/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/twostage_3.i [2024-11-28 02:42:43,095 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730730bf-c799-496e-b77a-17763b7f3018/bin/uautomizer-verify-aQ6SnzHsRB/data/64121464b/b62754dde85340639e124b1153001b2c/FLAG1b63adfc1 [2024-11-28 02:42:43,698 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:42:43,698 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730730bf-c799-496e-b77a-17763b7f3018/sv-benchmarks/c/pthread/twostage_3.i [2024-11-28 02:42:43,721 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730730bf-c799-496e-b77a-17763b7f3018/bin/uautomizer-verify-aQ6SnzHsRB/data/64121464b/b62754dde85340639e124b1153001b2c/FLAG1b63adfc1 [2024-11-28 02:42:44,183 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730730bf-c799-496e-b77a-17763b7f3018/bin/uautomizer-verify-aQ6SnzHsRB/data/64121464b/b62754dde85340639e124b1153001b2c [2024-11-28 02:42:44,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:42:44,188 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:42:44,190 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:42:44,190 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:42:44,196 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:42:44,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:44" (1/1) ... [2024-11-28 02:42:44,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a46eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:44, skipping insertion in model container [2024-11-28 02:42:44,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:44" (1/1) ... [2024-11-28 02:42:44,274 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:42:45,005 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_730730bf-c799-496e-b77a-17763b7f3018/sv-benchmarks/c/pthread/twostage_3.i[59093,59106] [2024-11-28 02:42:45,033 WARN L1675 CHandler]: Possible shadowing of function lock [2024-11-28 02:42:45,034 WARN L1675 CHandler]: Possible shadowing of function lock [2024-11-28 02:42:45,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:42:45,054 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:42:45,120 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_730730bf-c799-496e-b77a-17763b7f3018/sv-benchmarks/c/pthread/twostage_3.i[59093,59106] [2024-11-28 02:42:45,133 WARN L1675 CHandler]: Possible shadowing of function lock [2024-11-28 02:42:45,134 WARN L1675 CHandler]: Possible shadowing of function lock [2024-11-28 02:42:45,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:42:45,248 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:42:45,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:45 WrapperNode [2024-11-28 02:42:45,250 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:42:45,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:42:45,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:42:45,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:42:45,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:45" (1/1) ... [2024-11-28 02:42:45,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:45" (1/1) ... [2024-11-28 02:42:45,342 INFO L138 Inliner]: procedures = 373, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 136 [2024-11-28 02:42:45,343 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:42:45,344 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:42:45,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:42:45,344 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:42:45,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:45" (1/1) ... [2024-11-28 02:42:45,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:45" (1/1) ... [2024-11-28 02:42:45,359 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:45" (1/1) ... [2024-11-28 02:42:45,375 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-28 02:42:45,376 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:45" (1/1) ... [2024-11-28 02:42:45,376 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:45" (1/1) ... [2024-11-28 02:42:45,386 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:45" (1/1) ... [2024-11-28 02:42:45,387 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:45" (1/1) ... [2024-11-28 02:42:45,392 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:45" (1/1) ... [2024-11-28 02:42:45,394 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:45" (1/1) ... [2024-11-28 02:42:45,396 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:45" (1/1) ... [2024-11-28 02:42:45,400 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:42:45,401 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:42:45,401 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:42:45,401 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:42:45,402 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:45" (1/1) ... [2024-11-28 02:42:45,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:42:45,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730730bf-c799-496e-b77a-17763b7f3018/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:42:45,453 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730730bf-c799-496e-b77a-17763b7f3018/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:42:45,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730730bf-c799-496e-b77a-17763b7f3018/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:42:45,491 INFO L130 BoogieDeclarations]: Found specification of procedure funcA [2024-11-28 02:42:45,491 INFO L138 BoogieDeclarations]: Found implementation of procedure funcA [2024-11-28 02:42:45,492 INFO L130 BoogieDeclarations]: Found specification of procedure funcB [2024-11-28 02:42:45,492 INFO L138 BoogieDeclarations]: Found implementation of procedure funcB [2024-11-28 02:42:45,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:42:45,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:42:45,492 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:42:45,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:42:45,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:42:45,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:42:45,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:42:45,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:42:45,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:42:45,495 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:42:45,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:42:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:42:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:42:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:42:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:42:45,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:42:45,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:42:45,499 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:42:45,724 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:42:45,725 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:42:46,190 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:42:46,191 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:42:46,562 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:42:46,563 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:42:46,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:46 BoogieIcfgContainer [2024-11-28 02:42:46,564 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:42:46,569 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:42:46,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:42:46,575 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:42:46,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:42:44" (1/3) ... [2024-11-28 02:42:46,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3e7475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:46, skipping insertion in model container [2024-11-28 02:42:46,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:45" (2/3) ... [2024-11-28 02:42:46,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3e7475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:46, skipping insertion in model container [2024-11-28 02:42:46,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:46" (3/3) ... [2024-11-28 02:42:46,578 INFO L128 eAbstractionObserver]: Analyzing ICFG twostage_3.i [2024-11-28 02:42:46,597 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:42:46,599 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG twostage_3.i that has 3 procedures, 46 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-28 02:42:46,599 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:42:46,687 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 02:42:46,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 53 transitions, 126 flow [2024-11-28 02:42:46,797 INFO L124 PetriNetUnfolderBase]: 12/103 cut-off events. [2024-11-28 02:42:46,800 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-28 02:42:46,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 103 events. 12/103 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 400 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 58. Up to 7 conditions per place. [2024-11-28 02:42:46,806 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 53 transitions, 126 flow [2024-11-28 02:42:46,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 51 transitions, 116 flow [2024-11-28 02:42:46,820 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:42:46,843 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;@290d805f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:42:46,843 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 02:42:46,861 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:42:46,862 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-11-28 02:42:46,862 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:42:46,863 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:42:46,864 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 02:42:46,865 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 02:42:46,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1331361282, now seen corresponding path program 1 times [2024-11-28 02:42:46,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:46,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161553236] [2024-11-28 02:42:46,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:46,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:42:47,069 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:42:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:42:47,197 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:42:47,199 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:42:47,201 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-28 02:42:47,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-28 02:42:47,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-28 02:42:47,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-28 02:42:47,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:42:47,206 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-28 02:42:47,216 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:42:47,216 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 02:42:47,277 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-28 02:42:47,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 91 transitions, 226 flow [2024-11-28 02:42:47,480 INFO L124 PetriNetUnfolderBase]: 69/343 cut-off events. [2024-11-28 02:42:47,480 INFO L125 PetriNetUnfolderBase]: For 72/94 co-relation queries the response was YES. [2024-11-28 02:42:47,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 343 events. 69/343 cut-off events. For 72/94 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1948 event pairs, 2 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 226. Up to 32 conditions per place. [2024-11-28 02:42:47,486 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 91 transitions, 226 flow [2024-11-28 02:42:47,490 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 91 transitions, 226 flow [2024-11-28 02:42:47,492 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:42:47,492 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;@290d805f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:42:47,493 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-28 02:42:47,506 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:42:47,506 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-11-28 02:42:47,506 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 02:42:47,506 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:42:47,507 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-28 02:42:47,507 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-28 02:42:47,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:47,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1666097124, now seen corresponding path program 1 times [2024-11-28 02:42:47,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:47,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232467717] [2024-11-28 02:42:47,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:47,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:42:47,602 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:42:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:42:47,674 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:42:47,675 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:42:47,675 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-28 02:42:47,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2024-11-28 02:42:47,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-28 02:42:47,675 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-28 02:42:47,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-28 02:42:47,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:42:47,676 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-28 02:42:47,677 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:42:47,677 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 02:42:47,762 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2024-11-28 02:42:47,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 129 transitions, 330 flow [2024-11-28 02:42:48,081 INFO L124 PetriNetUnfolderBase]: 360/1109 cut-off events. [2024-11-28 02:42:48,082 INFO L125 PetriNetUnfolderBase]: For 419/493 co-relation queries the response was YES. [2024-11-28 02:42:48,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1545 conditions, 1109 events. 360/1109 cut-off events. For 419/493 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7216 event pairs, 64 based on Foata normal form. 0/891 useless extension candidates. Maximal degree in co-relation 798. Up to 192 conditions per place. [2024-11-28 02:42:48,110 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 129 transitions, 330 flow [2024-11-28 02:42:48,126 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 129 transitions, 330 flow [2024-11-28 02:42:48,131 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:42:48,132 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;@290d805f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:42:48,134 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 02:42:48,156 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:42:48,156 INFO L124 PetriNetUnfolderBase]: 0/104 cut-off events. [2024-11-28 02:42:48,156 INFO L125 PetriNetUnfolderBase]: For 16/24 co-relation queries the response was YES. [2024-11-28 02:42:48,157 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:42:48,157 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-28 02:42:48,159 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-28 02:42:48,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:48,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1086119363, now seen corresponding path program 1 times [2024-11-28 02:42:48,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:48,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926180434] [2024-11-28 02:42:48,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:48,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:42:48,243 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:42:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:42:48,323 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:42:48,324 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:42:48,324 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-28 02:42:48,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2024-11-28 02:42:48,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-11-28 02:42:48,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-11-28 02:42:48,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-28 02:42:48,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-28 02:42:48,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:42:48,325 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-28 02:42:48,326 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:42:48,326 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-28 02:42:48,416 INFO L143 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2024-11-28 02:42:48,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 167 transitions, 438 flow [2024-11-28 02:42:49,900 INFO L124 PetriNetUnfolderBase]: 1857/4129 cut-off events. [2024-11-28 02:42:49,901 INFO L125 PetriNetUnfolderBase]: For 2144/2314 co-relation queries the response was YES. [2024-11-28 02:42:49,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6270 conditions, 4129 events. 1857/4129 cut-off events. For 2144/2314 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 29478 event pairs, 529 based on Foata normal form. 0/3465 useless extension candidates. Maximal degree in co-relation 3061. Up to 1024 conditions per place. [2024-11-28 02:42:49,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 167 transitions, 438 flow [2024-11-28 02:42:50,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 167 transitions, 438 flow [2024-11-28 02:42:50,024 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:42:50,026 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;@290d805f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:42:50,026 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 02:42:50,061 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:42:50,061 INFO L124 PetriNetUnfolderBase]: 0/183 cut-off events. [2024-11-28 02:42:50,062 INFO L125 PetriNetUnfolderBase]: For 45/63 co-relation queries the response was YES. [2024-11-28 02:42:50,062 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:42:50,062 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:50,062 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-28 02:42:50,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:50,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1266598209, now seen corresponding path program 1 times [2024-11-28 02:42:50,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:50,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606064328] [2024-11-28 02:42:50,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:50,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:42:50,154 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:42:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:42:50,193 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:42:50,193 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:42:50,193 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-28 02:42:50,194 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2024-11-28 02:42:50,194 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2024-11-28 02:42:50,194 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-11-28 02:42:50,194 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-11-28 02:42:50,194 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-11-28 02:42:50,195 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-11-28 02:42:50,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:42:50,195 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-28 02:42:50,196 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:42:50,196 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-28 02:42:50,280 INFO L143 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2024-11-28 02:42:50,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 205 transitions, 550 flow [2024-11-28 02:42:55,224 INFO L124 PetriNetUnfolderBase]: 9312/17179 cut-off events. [2024-11-28 02:42:55,225 INFO L125 PetriNetUnfolderBase]: For 10450/10736 co-relation queries the response was YES. [2024-11-28 02:42:55,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27570 conditions, 17179 events. 9312/17179 cut-off events. For 10450/10736 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 134083 event pairs, 4296 based on Foata normal form. 0/14909 useless extension candidates. Maximal degree in co-relation 13066. Up to 5120 conditions per place. [2024-11-28 02:42:55,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 205 transitions, 550 flow [2024-11-28 02:42:55,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 205 transitions, 550 flow [2024-11-28 02:42:55,981 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:42:55,983 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;@290d805f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:42:55,983 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-28 02:42:56,011 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:42:56,012 INFO L124 PetriNetUnfolderBase]: 8/245 cut-off events. [2024-11-28 02:42:56,012 INFO L125 PetriNetUnfolderBase]: For 86/152 co-relation queries the response was YES. [2024-11-28 02:42:56,013 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:42:56,013 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:56,013 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting funcBErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-28 02:42:56,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:56,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1017734216, now seen corresponding path program 1 times [2024-11-28 02:42:56,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:56,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860739234] [2024-11-28 02:42:56,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:56,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:56,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:56,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:56,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860739234] [2024-11-28 02:42:56,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860739234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:56,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:56,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:42:56,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976596808] [2024-11-28 02:42:56,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:56,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:42:56,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:56,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:42:56,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:42:56,322 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 205 [2024-11-28 02:42:56,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 205 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2024-11-28 02:42:56,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:42:56,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 205 [2024-11-28 02:42:56,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand