./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.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_7aa75951-95ee-483d-8adf-b0bd92913ec0/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa75951-95ee-483d-8adf-b0bd92913ec0/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_7aa75951-95ee-483d-8adf-b0bd92913ec0/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa75951-95ee-483d-8adf-b0bd92913ec0/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa75951-95ee-483d-8adf-b0bd92913ec0/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_7aa75951-95ee-483d-8adf-b0bd92913ec0/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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:44:23,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:44:23,126 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa75951-95ee-483d-8adf-b0bd92913ec0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:44:23,137 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:44:23,137 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:44:23,178 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:44:23,180 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:44:23,181 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:44:23,181 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:44:23,182 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:44:23,183 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:44:23,183 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:44:23,183 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:44:23,184 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:44:23,184 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:44:23,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:44:23,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:44:23,185 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:44:23,185 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:44:23,186 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:44:23,186 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:44:23,186 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:44:23,186 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:44:23,186 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:44:23,186 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:44:23,187 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:44:23,187 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:44:23,187 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:44:23,187 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:44:23,187 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:44:23,187 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:44:23,187 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:44:23,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:44:23,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:44:23,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:44:23,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:44:23,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:44:23,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:44:23,188 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:44:23,188 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:44:23,188 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:44:23,188 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:44:23,188 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:44:23,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:44:23,189 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:44:23,189 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:44:23,189 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:44:23,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:44:23,189 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_7aa75951-95ee-483d-8adf-b0bd92913ec0/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 -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2024-11-28 02:44:23,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:44:23,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:44:23,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:44:23,567 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:44:23,568 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:44:23,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa75951-95ee-483d-8adf-b0bd92913ec0/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2024-11-28 02:44:26,846 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa75951-95ee-483d-8adf-b0bd92913ec0/bin/uautomizer-verify-aQ6SnzHsRB/data/a44476134/58744db282b445e0b6eac5c250ee3a82/FLAG960884f4c [2024-11-28 02:44:27,325 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:44:27,326 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa75951-95ee-483d-8adf-b0bd92913ec0/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2024-11-28 02:44:27,352 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa75951-95ee-483d-8adf-b0bd92913ec0/bin/uautomizer-verify-aQ6SnzHsRB/data/a44476134/58744db282b445e0b6eac5c250ee3a82/FLAG960884f4c [2024-11-28 02:44:27,379 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa75951-95ee-483d-8adf-b0bd92913ec0/bin/uautomizer-verify-aQ6SnzHsRB/data/a44476134/58744db282b445e0b6eac5c250ee3a82 [2024-11-28 02:44:27,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:44:27,384 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:44:27,386 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:44:27,387 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:44:27,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:44:27,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:44:27" (1/1) ... [2024-11-28 02:44:27,397 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66fc88e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:27, skipping insertion in model container [2024-11-28 02:44:27,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:44:27" (1/1) ... [2024-11-28 02:44:27,464 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:44:28,024 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_7aa75951-95ee-483d-8adf-b0bd92913ec0/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2024-11-28 02:44:28,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:44:28,075 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:44:28,129 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_7aa75951-95ee-483d-8adf-b0bd92913ec0/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2024-11-28 02:44:28,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:44:28,211 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:44:28,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:28 WrapperNode [2024-11-28 02:44:28,212 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:44:28,213 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:44:28,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:44:28,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:44:28,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:28" (1/1) ... [2024-11-28 02:44:28,247 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:28" (1/1) ... [2024-11-28 02:44:28,290 INFO L138 Inliner]: procedures = 271, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 139 [2024-11-28 02:44:28,293 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:44:28,293 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:44:28,294 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:44:28,294 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:44:28,306 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:28" (1/1) ... [2024-11-28 02:44:28,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:28" (1/1) ... [2024-11-28 02:44:28,313 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:28" (1/1) ... [2024-11-28 02:44:28,346 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 2, 5, 5]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0]. [2024-11-28 02:44:28,346 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:28" (1/1) ... [2024-11-28 02:44:28,347 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:28" (1/1) ... [2024-11-28 02:44:28,355 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:28" (1/1) ... [2024-11-28 02:44:28,358 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:28" (1/1) ... [2024-11-28 02:44:28,365 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:28" (1/1) ... [2024-11-28 02:44:28,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:28" (1/1) ... [2024-11-28 02:44:28,369 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:28" (1/1) ... [2024-11-28 02:44:28,372 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:44:28,373 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:44:28,373 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:44:28,373 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:44:28,374 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:28" (1/1) ... [2024-11-28 02:44:28,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:44:28,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa75951-95ee-483d-8adf-b0bd92913ec0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:44:28,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa75951-95ee-483d-8adf-b0bd92913ec0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:44:28,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa75951-95ee-483d-8adf-b0bd92913ec0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:44:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:44:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:44:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:44:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:44:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:44:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:44:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:44:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:44:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:44:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:44:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:44:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:44:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:44:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 02:44:28,457 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 02:44:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:44:28,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:44:28,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:44:28,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:44:28,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:44:28,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:44:28,461 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 02:44:28,645 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:44:28,648 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:44:29,029 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:44:29,030 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:44:29,454 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:44:29,454 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 02:44:29,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:44:29 BoogieIcfgContainer [2024-11-28 02:44:29,454 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:44:29,459 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:44:29,459 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:44:29,464 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:44:29,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:44:27" (1/3) ... [2024-11-28 02:44:29,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31596834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:44:29, skipping insertion in model container [2024-11-28 02:44:29,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:28" (2/3) ... [2024-11-28 02:44:29,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31596834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:44:29, skipping insertion in model container [2024-11-28 02:44:29,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:44:29" (3/3) ... [2024-11-28 02:44:29,469 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2024-11-28 02:44:29,487 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:44:29,489 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_08-cond_racefree.i that has 2 procedures, 43 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-28 02:44:29,490 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:44:29,562 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 02:44:29,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 56 transitions, 119 flow [2024-11-28 02:44:29,672 INFO L124 PetriNetUnfolderBase]: 19/83 cut-off events. [2024-11-28 02:44:29,678 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:44:29,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 83 events. 19/83 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 262 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 51. Up to 6 conditions per place. [2024-11-28 02:44:29,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 56 transitions, 119 flow [2024-11-28 02:44:29,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 54 transitions, 112 flow [2024-11-28 02:44:29,701 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:44:29,714 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;@5bea4a86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:44:29,715 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 02:44:29,766 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:44:29,766 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-11-28 02:44:29,767 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:44:29,767 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:29,768 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 02:44:29,768 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:44:29,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:29,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1526768607, now seen corresponding path program 1 times [2024-11-28 02:44:29,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:29,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345751589] [2024-11-28 02:44:29,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:29,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:44:30,006 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:44:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:44:30,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:44:30,114 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:44:30,116 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-28 02:44:30,118 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-28 02:44:30,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:44:30,121 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-28 02:44:30,129 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:44:30,129 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 02:44:30,167 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:44:30,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 81 transitions, 178 flow [2024-11-28 02:44:30,238 INFO L124 PetriNetUnfolderBase]: 33/142 cut-off events. [2024-11-28 02:44:30,238 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 02:44:30,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 142 events. 33/142 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 567 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 87. Up to 9 conditions per place. [2024-11-28 02:44:30,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 81 transitions, 178 flow [2024-11-28 02:44:30,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 81 transitions, 178 flow [2024-11-28 02:44:30,245 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:44:30,246 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;@5bea4a86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:44:30,246 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 02:44:30,262 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:44:30,262 INFO L124 PetriNetUnfolderBase]: 8/52 cut-off events. [2024-11-28 02:44:30,262 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:44:30,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:30,262 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-28 02:44:30,262 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:44:30,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash -472740538, now seen corresponding path program 1 times [2024-11-28 02:44:30,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:30,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254890013] [2024-11-28 02:44:30,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:30,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:44:30,392 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:44:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:44:30,437 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:44:30,437 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:44:30,437 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-28 02:44:30,437 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-28 02:44:30,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:44:30,438 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-28 02:44:30,438 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:44:30,442 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 02:44:30,497 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 02:44:30,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 106 transitions, 239 flow [2024-11-28 02:44:30,597 INFO L124 PetriNetUnfolderBase]: 50/212 cut-off events. [2024-11-28 02:44:30,598 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-28 02:44:30,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 212 events. 50/212 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 900 event pairs, 1 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 153. Up to 12 conditions per place. [2024-11-28 02:44:30,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 106 transitions, 239 flow [2024-11-28 02:44:30,605 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 106 transitions, 239 flow [2024-11-28 02:44:30,608 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:44:30,610 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;@5bea4a86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:44:30,613 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 02:44:30,638 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:44:30,640 INFO L124 PetriNetUnfolderBase]: 9/58 cut-off events. [2024-11-28 02:44:30,641 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 02:44:30,641 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:30,641 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:30,641 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:44:30,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:30,642 INFO L85 PathProgramCache]: Analyzing trace with hash 745642071, now seen corresponding path program 1 times [2024-11-28 02:44:30,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:30,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712541075] [2024-11-28 02:44:30,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:30,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:30,890 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 02:44:30,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:30,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712541075] [2024-11-28 02:44:30,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712541075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:30,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:30,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:44:30,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964647328] [2024-11-28 02:44:30,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:30,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:44:30,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:30,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:44:30,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:44:30,943 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 106 [2024-11-28 02:44:30,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 106 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 02:44:30,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:30,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 106 [2024-11-28 02:44:30,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:40,153 INFO L124 PetriNetUnfolderBase]: 44900/72634 cut-off events. [2024-11-28 02:44:40,154 INFO L125 PetriNetUnfolderBase]: For 1369/1369 co-relation queries the response was YES. [2024-11-28 02:44:40,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134540 conditions, 72634 events. 44900/72634 cut-off events. For 1369/1369 co-relation queries the response was YES. Maximal size of possible extension queue 2008. Compared 637203 event pairs, 26352 based on Foata normal form. 20384/87864 useless extension candidates. Maximal degree in co-relation 10325. Up to 61095 conditions per place. [2024-11-28 02:44:40,517 INFO L140 encePairwiseOnDemand]: 82/106 looper letters, 49 selfloop transitions, 2 changer transitions 11/96 dead transitions. [2024-11-28 02:44:40,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 96 transitions, 337 flow [2024-11-28 02:44:40,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:44:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:44:40,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2024-11-28 02:44:40,543 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-11-28 02:44:40,545 INFO L175 Difference]: Start difference. First operand has 86 places, 106 transitions, 239 flow. Second operand 3 states and 198 transitions. [2024-11-28 02:44:40,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 96 transitions, 337 flow [2024-11-28 02:44:40,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 337 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:44:40,565 INFO L231 Difference]: Finished difference. Result has 89 places, 75 transitions, 178 flow [2024-11-28 02:44:40,568 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=89, PETRI_TRANSITIONS=75} [2024-11-28 02:44:40,572 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2024-11-28 02:44:40,573 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 75 transitions, 178 flow [2024-11-28 02:44:40,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 02:44:40,573 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:40,574 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-28 02:44:40,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:44:40,574 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:44:40,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1392757090, now seen corresponding path program 1 times [2024-11-28 02:44:40,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:40,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605203354] [2024-11-28 02:44:40,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:40,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:44:40,636 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:44:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:44:40,667 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:44:40,667 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:44:40,667 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-28 02:44:40,667 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-28 02:44:40,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:44:40,668 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 02:44:40,669 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:44:40,669 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-28 02:44:40,706 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 02:44:40,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 131 transitions, 302 flow [2024-11-28 02:44:40,752 INFO L124 PetriNetUnfolderBase]: 75/306 cut-off events. [2024-11-28 02:44:40,752 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-28 02:44:40,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 306 events. 75/306 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1363 event pairs, 6 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 236. Up to 32 conditions per place. [2024-11-28 02:44:40,754 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 131 transitions, 302 flow [2024-11-28 02:44:40,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 131 transitions, 302 flow [2024-11-28 02:44:40,759 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:44:40,760 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;@5bea4a86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:44:40,760 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 02:44:40,779 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:44:40,780 INFO L124 PetriNetUnfolderBase]: 9/58 cut-off events. [2024-11-28 02:44:40,780 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 02:44:40,780 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:40,781 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:40,782 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:44:40,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:40,782 INFO L85 PathProgramCache]: Analyzing trace with hash 746526554, now seen corresponding path program 1 times [2024-11-28 02:44:40,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:40,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760289842] [2024-11-28 02:44:40,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:40,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:40,923 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 02:44:40,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:40,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760289842] [2024-11-28 02:44:40,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760289842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:40,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:40,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:44:40,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734598095] [2024-11-28 02:44:40,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:40,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:44:40,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:40,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:44:40,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:44:40,926 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 131 [2024-11-28 02:44:40,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 131 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 02:44:40,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:40,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 131 [2024-11-28 02:44:40,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand