./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2002e022-ca02-4810-8952-d853af89410e/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2002e022-ca02-4810-8952-d853af89410e/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2002e022-ca02-4810-8952-d853af89410e/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2002e022-ca02-4810-8952-d853af89410e/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2002e022-ca02-4810-8952-d853af89410e/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2002e022-ca02-4810-8952-d853af89410e/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:46:01,027 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:46:01,079 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2002e022-ca02-4810-8952-d853af89410e/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 15:46:01,083 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:46:01,083 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:46:01,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:46:01,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:46:01,102 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:46:01,102 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:46:01,102 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:46:01,103 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:46:01,103 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:46:01,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:46:01,103 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:46:01,103 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:46:01,103 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:46:01,103 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:46:01,103 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:46:01,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:46:01,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:46:01,104 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 15:46:01,104 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 15:46:01,104 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 15:46:01,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:46:01,104 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 15:46:01,104 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 15:46:01,104 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:46:01,104 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:46:01,104 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:46:01,105 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:46:01,105 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:46:01,105 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:46:01,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:46:01,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:46:01,105 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:46:01,105 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:46:01,105 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:46:01,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:46:01,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:46:01,106 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:46:01,106 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:46:01,106 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:46:01,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:46:01,106 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:46:01,106 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:46:01,106 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:46:01,106 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:46:01,106 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_2002e022-ca02-4810-8952-d853af89410e/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 [2024-12-02 15:46:01,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:46:01,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:46:01,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:46:01,315 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:46:01,316 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:46:01,317 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2002e022-ca02-4810-8952-d853af89410e/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2024-12-02 15:46:03,951 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2002e022-ca02-4810-8952-d853af89410e/bin/uautomizer-verify-84ZbGMXZE1/data/be36102a8/825d2e5115b84c168ea64a2644b376e7/FLAG6d6af581f [2024-12-02 15:46:04,197 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:46:04,198 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2002e022-ca02-4810-8952-d853af89410e/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2024-12-02 15:46:04,210 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2002e022-ca02-4810-8952-d853af89410e/bin/uautomizer-verify-84ZbGMXZE1/data/be36102a8/825d2e5115b84c168ea64a2644b376e7/FLAG6d6af581f [2024-12-02 15:46:04,507 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2002e022-ca02-4810-8952-d853af89410e/bin/uautomizer-verify-84ZbGMXZE1/data/be36102a8/825d2e5115b84c168ea64a2644b376e7 [2024-12-02 15:46:04,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:46:04,510 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:46:04,511 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:46:04,511 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:46:04,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:46:04,515 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:46:04" (1/1) ... [2024-12-02 15:46:04,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f61bdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:04, skipping insertion in model container [2024-12-02 15:46:04,516 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:46:04" (1/1) ... [2024-12-02 15:46:04,549 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:46:04,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:46:04,969 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:46:05,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:46:05,069 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:46:05,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:05 WrapperNode [2024-12-02 15:46:05,070 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:46:05,071 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:46:05,071 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:46:05,071 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:46:05,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:05" (1/1) ... [2024-12-02 15:46:05,090 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:05" (1/1) ... [2024-12-02 15:46:05,113 INFO L138 Inliner]: procedures = 279, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 214 [2024-12-02 15:46:05,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:46:05,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:46:05,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:46:05,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:46:05,121 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:05" (1/1) ... [2024-12-02 15:46:05,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:05" (1/1) ... [2024-12-02 15:46:05,126 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:05" (1/1) ... [2024-12-02 15:46:05,148 INFO L175 MemorySlicer]: Split 35 memory accesses to 7 slices as follows [2, 5, 5, 14, 5, 2, 2]. 40 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 0, 5, 0, 0]. The 10 writes are split as follows [0, 0, 0, 8, 0, 1, 1]. [2024-12-02 15:46:05,148 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:05" (1/1) ... [2024-12-02 15:46:05,149 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:05" (1/1) ... [2024-12-02 15:46:05,165 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:05" (1/1) ... [2024-12-02 15:46:05,166 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:05" (1/1) ... [2024-12-02 15:46:05,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:05" (1/1) ... [2024-12-02 15:46:05,173 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:05" (1/1) ... [2024-12-02 15:46:05,175 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:05" (1/1) ... [2024-12-02 15:46:05,180 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:46:05,181 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:46:05,181 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:46:05,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:46:05,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:05" (1/1) ... [2024-12-02 15:46:05,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:46:05,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2002e022-ca02-4810-8952-d853af89410e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:05,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2002e022-ca02-4810-8952-d853af89410e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:46:05,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2002e022-ca02-4810-8952-d853af89410e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:46:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 15:46:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 15:46:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 15:46:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 15:46:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 15:46:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 15:46:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 15:46:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 15:46:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-12-02 15:46:05,235 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-12-02 15:46:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 15:46:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 15:46:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 15:46:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 15:46:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 15:46:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 15:46:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 15:46:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 15:46:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 15:46:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-12-02 15:46:05,236 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-12-02 15:46:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 15:46:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 15:46:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 15:46:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 15:46:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 15:46:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 15:46:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 15:46:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 15:46:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 15:46:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:46:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 15:46:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 15:46:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 15:46:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 15:46:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 15:46:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 15:46:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 15:46:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:46:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 15:46:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 15:46:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 15:46:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 15:46:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 15:46:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 15:46:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:46:05,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:46:05,240 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 15:46:05,404 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:46:05,406 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:46:05,788 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 15:46:05,788 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:46:05,935 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:46:05,936 INFO L312 CfgBuilder]: Removed 10 assume(true) statements. [2024-12-02 15:46:05,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:46:05 BoogieIcfgContainer [2024-12-02 15:46:05,936 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:46:05,938 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:46:05,938 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:46:05,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:46:05,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:46:04" (1/3) ... [2024-12-02 15:46:05,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a82694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:46:05, skipping insertion in model container [2024-12-02 15:46:05,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:05" (2/3) ... [2024-12-02 15:46:05,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a82694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:46:05, skipping insertion in model container [2024-12-02 15:46:05,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:46:05" (3/3) ... [2024-12-02 15:46:05,944 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2024-12-02 15:46:05,955 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:46:05,956 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_82-list_racefree.i that has 3 procedures, 113 locations, 1 initial locations, 10 loop locations, and 38 error locations. [2024-12-02 15:46:05,957 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 15:46:06,027 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 15:46:06,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 133 transitions, 286 flow [2024-12-02 15:46:06,157 INFO L124 PetriNetUnfolderBase]: 38/272 cut-off events. [2024-12-02 15:46:06,159 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-12-02 15:46:06,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 272 events. 38/272 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1415 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 143. Up to 8 conditions per place. [2024-12-02 15:46:06,166 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 133 transitions, 286 flow [2024-12-02 15:46:06,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 133 transitions, 286 flow [2024-12-02 15:46:06,178 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:46:06,188 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=None, 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;@47240851, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:46:06,188 INFO L334 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2024-12-02 15:46:06,191 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:46:06,191 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-12-02 15:46:06,191 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 15:46:06,191 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:46:06,191 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-12-02 15:46:06,192 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-02 15:46:06,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:06,196 INFO L85 PathProgramCache]: Analyzing trace with hash 19418, now seen corresponding path program 1 times [2024-12-02 15:46:06,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:06,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984240545] [2024-12-02 15:46:06,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:06,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:46:06,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:06,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984240545] [2024-12-02 15:46:06,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984240545] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:46:06,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:46:06,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 15:46:06,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482647817] [2024-12-02 15:46:06,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:46:06,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:46:06,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:06,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:46:06,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:46:06,546 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 133 [2024-12-02 15:46:06,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 133 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:06,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:46:06,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 133 [2024-12-02 15:46:06,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:46:07,564 INFO L124 PetriNetUnfolderBase]: 2776/6519 cut-off events. [2024-12-02 15:46:07,564 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2024-12-02 15:46:07,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11046 conditions, 6519 events. 2776/6519 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 52509 event pairs, 2586 based on Foata normal form. 464/5993 useless extension candidates. Maximal degree in co-relation 9605. Up to 4430 conditions per place. [2024-12-02 15:46:07,614 INFO L140 encePairwiseOnDemand]: 116/133 looper letters, 52 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2024-12-02 15:46:07,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 117 transitions, 362 flow [2024-12-02 15:46:07,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:46:07,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 15:46:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2024-12-02 15:46:07,628 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6466165413533834 [2024-12-02 15:46:07,629 INFO L175 Difference]: Start difference. First operand has 119 places, 133 transitions, 286 flow. Second operand 3 states and 258 transitions. [2024-12-02 15:46:07,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 117 transitions, 362 flow [2024-12-02 15:46:07,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 117 transitions, 362 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 15:46:07,639 INFO L231 Difference]: Finished difference. Result has 118 places, 117 transitions, 258 flow [2024-12-02 15:46:07,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=118, PETRI_TRANSITIONS=117} [2024-12-02 15:46:07,645 INFO L279 CegarLoopForPetriNet]: 119 programPoint places, -1 predicate places. [2024-12-02 15:46:07,645 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 117 transitions, 258 flow [2024-12-02 15:46:07,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:07,645 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:46:07,646 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-12-02 15:46:07,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 15:46:07,646 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-02 15:46:07,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:07,647 INFO L85 PathProgramCache]: Analyzing trace with hash 19419, now seen corresponding path program 1 times [2024-12-02 15:46:07,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:07,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940076622] [2024-12-02 15:46:07,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:07,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:07,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:46:07,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:07,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940076622] [2024-12-02 15:46:07,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940076622] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:46:07,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:46:07,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 15:46:07,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78205823] [2024-12-02 15:46:07,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:46:07,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:46:07,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:07,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:46:07,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:46:07,856 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 133 [2024-12-02 15:46:07,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 117 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:07,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:46:07,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 133 [2024-12-02 15:46:07,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:46:08,570 INFO L124 PetriNetUnfolderBase]: 2776/6517 cut-off events. [2024-12-02 15:46:08,570 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-12-02 15:46:08,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11046 conditions, 6517 events. 2776/6517 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 52517 event pairs, 2586 based on Foata normal form. 2/5529 useless extension candidates. Maximal degree in co-relation 11034. Up to 4430 conditions per place. [2024-12-02 15:46:08,616 INFO L140 encePairwiseOnDemand]: 129/133 looper letters, 51 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2024-12-02 15:46:08,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 115 transitions, 360 flow [2024-12-02 15:46:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:46:08,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 15:46:08,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2024-12-02 15:46:08,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-12-02 15:46:08,619 INFO L175 Difference]: Start difference. First operand has 118 places, 117 transitions, 258 flow. Second operand 3 states and 247 transitions. [2024-12-02 15:46:08,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 115 transitions, 360 flow [2024-12-02 15:46:08,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 115 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 15:46:08,623 INFO L231 Difference]: Finished difference. Result has 116 places, 115 transitions, 254 flow [2024-12-02 15:46:08,624 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=116, PETRI_TRANSITIONS=115} [2024-12-02 15:46:08,624 INFO L279 CegarLoopForPetriNet]: 119 programPoint places, -3 predicate places. [2024-12-02 15:46:08,625 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 115 transitions, 254 flow [2024-12-02 15:46:08,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:08,625 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:46:08,625 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 15:46:08,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:46:08,625 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-02 15:46:08,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:08,626 INFO L85 PathProgramCache]: Analyzing trace with hash 579039778, now seen corresponding path program 1 times [2024-12-02 15:46:08,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:08,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713325707] [2024-12-02 15:46:08,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:08,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:46:08,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:08,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713325707] [2024-12-02 15:46:08,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713325707] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:46:08,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:46:08,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:46:08,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845605479] [2024-12-02 15:46:08,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:46:08,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:46:08,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:08,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:46:08,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:46:08,765 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 133 [2024-12-02 15:46:08,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 115 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:08,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:46:08,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 133 [2024-12-02 15:46:08,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:46:09,506 INFO L124 PetriNetUnfolderBase]: 3172/7096 cut-off events. [2024-12-02 15:46:09,506 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2024-12-02 15:46:09,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12269 conditions, 7096 events. 3172/7096 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 58050 event pairs, 2202 based on Foata normal form. 0/6166 useless extension candidates. Maximal degree in co-relation 12257. Up to 3813 conditions per place. [2024-12-02 15:46:09,531 INFO L140 encePairwiseOnDemand]: 129/133 looper letters, 87 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2024-12-02 15:46:09,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 147 transitions, 496 flow [2024-12-02 15:46:09,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:46:09,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 15:46:09,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2024-12-02 15:46:09,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6942355889724311 [2024-12-02 15:46:09,534 INFO L175 Difference]: Start difference. First operand has 116 places, 115 transitions, 254 flow. Second operand 3 states and 277 transitions. [2024-12-02 15:46:09,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 147 transitions, 496 flow [2024-12-02 15:46:09,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 147 transitions, 492 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 15:46:09,537 INFO L231 Difference]: Finished difference. Result has 114 places, 113 transitions, 250 flow [2024-12-02 15:46:09,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=114, PETRI_TRANSITIONS=113} [2024-12-02 15:46:09,538 INFO L279 CegarLoopForPetriNet]: 119 programPoint places, -5 predicate places. [2024-12-02 15:46:09,538 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 113 transitions, 250 flow [2024-12-02 15:46:09,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:09,539 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:46:09,539 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 15:46:09,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:46:09,539 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-02 15:46:09,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:09,539 INFO L85 PathProgramCache]: Analyzing trace with hash 579039779, now seen corresponding path program 1 times [2024-12-02 15:46:09,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:09,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469739138] [2024-12-02 15:46:09,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:09,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:09,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:46:09,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:09,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469739138] [2024-12-02 15:46:09,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469739138] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:46:09,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:46:09,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:46:09,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383577153] [2024-12-02 15:46:09,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:46:09,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:46:09,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:09,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:46:09,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:46:09,707 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 133 [2024-12-02 15:46:09,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 113 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:09,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:46:09,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 133 [2024-12-02 15:46:09,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:46:10,224 INFO L124 PetriNetUnfolderBase]: 2693/6186 cut-off events. [2024-12-02 15:46:10,224 INFO L125 PetriNetUnfolderBase]: For 390/395 co-relation queries the response was YES. [2024-12-02 15:46:10,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10785 conditions, 6186 events. 2693/6186 cut-off events. For 390/395 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 49145 event pairs, 2331 based on Foata normal form. 1/5355 useless extension candidates. Maximal degree in co-relation 9675. Up to 4269 conditions per place. [2024-12-02 15:46:10,247 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 54 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2024-12-02 15:46:10,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 116 transitions, 370 flow [2024-12-02 15:46:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:46:10,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 15:46:10,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2024-12-02 15:46:10,249 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6365914786967418 [2024-12-02 15:46:10,249 INFO L175 Difference]: Start difference. First operand has 114 places, 113 transitions, 250 flow. Second operand 3 states and 254 transitions. [2024-12-02 15:46:10,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 116 transitions, 370 flow [2024-12-02 15:46:10,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 116 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 15:46:10,255 INFO L231 Difference]: Finished difference. Result has 115 places, 115 transitions, 267 flow [2024-12-02 15:46:10,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=115, PETRI_TRANSITIONS=115} [2024-12-02 15:46:10,256 INFO L279 CegarLoopForPetriNet]: 119 programPoint places, -4 predicate places. [2024-12-02 15:46:10,257 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 115 transitions, 267 flow [2024-12-02 15:46:10,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:10,257 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:46:10,257 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:10,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:46:10,257 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-02 15:46:10,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:10,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1586104777, now seen corresponding path program 1 times [2024-12-02 15:46:10,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:10,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209090268] [2024-12-02 15:46:10,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:10,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:46:10,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:10,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209090268] [2024-12-02 15:46:10,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209090268] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:46:10,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:46:10,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:46:10,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154815262] [2024-12-02 15:46:10,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:46:10,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:46:10,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:10,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:46:10,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:46:10,463 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 133 [2024-12-02 15:46:10,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 115 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:10,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:46:10,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 133 [2024-12-02 15:46:10,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:46:11,270 INFO L124 PetriNetUnfolderBase]: 3826/8859 cut-off events. [2024-12-02 15:46:11,270 INFO L125 PetriNetUnfolderBase]: For 416/421 co-relation queries the response was YES. [2024-12-02 15:46:11,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15188 conditions, 8859 events. 3826/8859 cut-off events. For 416/421 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 75867 event pairs, 2874 based on Foata normal form. 207/7638 useless extension candidates. Maximal degree in co-relation 14107. Up to 5410 conditions per place. [2024-12-02 15:46:11,303 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 96 selfloop transitions, 4 changer transitions 0/158 dead transitions. [2024-12-02 15:46:11,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 158 transitions, 566 flow [2024-12-02 15:46:11,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:46:11,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 15:46:11,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2024-12-02 15:46:11,304 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.731829573934837 [2024-12-02 15:46:11,304 INFO L175 Difference]: Start difference. First operand has 115 places, 115 transitions, 267 flow. Second operand 3 states and 292 transitions. [2024-12-02 15:46:11,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 158 transitions, 566 flow [2024-12-02 15:46:11,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 158 transitions, 563 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 15:46:11,308 INFO L231 Difference]: Finished difference. Result has 117 places, 117 transitions, 290 flow [2024-12-02 15:46:11,308 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=117, PETRI_TRANSITIONS=117} [2024-12-02 15:46:11,309 INFO L279 CegarLoopForPetriNet]: 119 programPoint places, -2 predicate places. [2024-12-02 15:46:11,309 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 290 flow [2024-12-02 15:46:11,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:11,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:46:11,309 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:11,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:46:11,309 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-02 15:46:11,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:11,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1586104776, now seen corresponding path program 1 times [2024-12-02 15:46:11,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:11,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299266192] [2024-12-02 15:46:11,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:11,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:11,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:46:11,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:11,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299266192] [2024-12-02 15:46:11,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299266192] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:46:11,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:46:11,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:46:11,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306282131] [2024-12-02 15:46:11,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:46:11,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:46:11,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:11,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:46:11,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:46:11,429 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 133 [2024-12-02 15:46:11,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:11,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:46:11,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 133 [2024-12-02 15:46:11,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:46:12,122 INFO L124 PetriNetUnfolderBase]: 4427/9559 cut-off events. [2024-12-02 15:46:12,122 INFO L125 PetriNetUnfolderBase]: For 1723/1929 co-relation queries the response was YES. [2024-12-02 15:46:12,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17966 conditions, 9559 events. 4427/9559 cut-off events. For 1723/1929 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 77567 event pairs, 2812 based on Foata normal form. 411/8723 useless extension candidates. Maximal degree in co-relation 16884. Up to 5023 conditions per place. [2024-12-02 15:46:12,146 INFO L140 encePairwiseOnDemand]: 127/133 looper letters, 98 selfloop transitions, 6 changer transitions 0/161 dead transitions. [2024-12-02 15:46:12,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 161 transitions, 602 flow [2024-12-02 15:46:12,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:46:12,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 15:46:12,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2024-12-02 15:46:12,147 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7293233082706767 [2024-12-02 15:46:12,147 INFO L175 Difference]: Start difference. First operand has 117 places, 117 transitions, 290 flow. Second operand 3 states and 291 transitions. [2024-12-02 15:46:12,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 161 transitions, 602 flow [2024-12-02 15:46:12,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 161 transitions, 597 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 15:46:12,150 INFO L231 Difference]: Finished difference. Result has 120 places, 121 transitions, 334 flow [2024-12-02 15:46:12,150 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=120, PETRI_TRANSITIONS=121} [2024-12-02 15:46:12,151 INFO L279 CegarLoopForPetriNet]: 119 programPoint places, 1 predicate places. [2024-12-02 15:46:12,151 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 121 transitions, 334 flow [2024-12-02 15:46:12,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:12,151 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:46:12,151 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:12,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 15:46:12,151 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-02 15:46:12,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:12,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1924494791, now seen corresponding path program 1 times [2024-12-02 15:46:12,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:12,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282684832] [2024-12-02 15:46:12,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:12,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:12,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:46:12,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:12,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282684832] [2024-12-02 15:46:12,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282684832] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:46:12,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:46:12,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:46:12,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570139179] [2024-12-02 15:46:12,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:46:12,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:46:12,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:12,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:46:12,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:46:12,340 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 133 [2024-12-02 15:46:12,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 121 transitions, 334 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:12,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:46:12,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 133 [2024-12-02 15:46:12,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:46:13,109 INFO L124 PetriNetUnfolderBase]: 3390/7660 cut-off events. [2024-12-02 15:46:13,110 INFO L125 PetriNetUnfolderBase]: For 8517/10159 co-relation queries the response was YES. [2024-12-02 15:46:13,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16051 conditions, 7660 events. 3390/7660 cut-off events. For 8517/10159 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 62244 event pairs, 2814 based on Foata normal form. 103/6735 useless extension candidates. Maximal degree in co-relation 14940. Up to 5326 conditions per place. [2024-12-02 15:46:13,138 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 60 selfloop transitions, 5 changer transitions 0/125 dead transitions. [2024-12-02 15:46:13,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 125 transitions, 484 flow [2024-12-02 15:46:13,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:46:13,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 15:46:13,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2024-12-02 15:46:13,140 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6033834586466166 [2024-12-02 15:46:13,140 INFO L175 Difference]: Start difference. First operand has 120 places, 121 transitions, 334 flow. Second operand 4 states and 321 transitions. [2024-12-02 15:46:13,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 125 transitions, 484 flow [2024-12-02 15:46:13,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 125 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 15:46:13,147 INFO L231 Difference]: Finished difference. Result has 122 places, 123 transitions, 355 flow [2024-12-02 15:46:13,147 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=355, PETRI_PLACES=122, PETRI_TRANSITIONS=123} [2024-12-02 15:46:13,148 INFO L279 CegarLoopForPetriNet]: 119 programPoint places, 3 predicate places. [2024-12-02 15:46:13,148 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 123 transitions, 355 flow [2024-12-02 15:46:13,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:13,148 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:46:13,148 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:13,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 15:46:13,149 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-02 15:46:13,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:13,149 INFO L85 PathProgramCache]: Analyzing trace with hash -470202911, now seen corresponding path program 1 times [2024-12-02 15:46:13,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:13,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983195544] [2024-12-02 15:46:13,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:13,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:46:13,178 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 15:46:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:46:13,215 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 15:46:13,215 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 15:46:13,216 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (64 of 65 remaining) [2024-12-02 15:46:13,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 65 remaining) [2024-12-02 15:46:13,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 65 remaining) [2024-12-02 15:46:13,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 65 remaining) [2024-12-02 15:46:13,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 65 remaining) [2024-12-02 15:46:13,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 65 remaining) [2024-12-02 15:46:13,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 65 remaining) [2024-12-02 15:46:13,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 65 remaining) [2024-12-02 15:46:13,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 65 remaining) [2024-12-02 15:46:13,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 65 remaining) [2024-12-02 15:46:13,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 65 remaining) [2024-12-02 15:46:13,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 65 remaining) [2024-12-02 15:46:13,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 65 remaining) [2024-12-02 15:46:13,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 65 remaining) [2024-12-02 15:46:13,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 65 remaining) [2024-12-02 15:46:13,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr14ASSERT_VIOLATIONMEMORY_LEAK (49 of 65 remaining) [2024-12-02 15:46:13,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 65 remaining) [2024-12-02 15:46:13,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 65 remaining) [2024-12-02 15:46:13,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 65 remaining) [2024-12-02 15:46:13,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 65 remaining) [2024-12-02 15:46:13,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 65 remaining) [2024-12-02 15:46:13,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 65 remaining) [2024-12-02 15:46:13,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 65 remaining) [2024-12-02 15:46:13,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 65 remaining) [2024-12-02 15:46:13,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 65 remaining) [2024-12-02 15:46:13,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 65 remaining) [2024-12-02 15:46:13,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 65 remaining) [2024-12-02 15:46:13,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 65 remaining) [2024-12-02 15:46:13,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (36 of 65 remaining) [2024-12-02 15:46:13,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 65 remaining) [2024-12-02 15:46:13,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 65 remaining) [2024-12-02 15:46:13,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 65 remaining) [2024-12-02 15:46:13,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 65 remaining) [2024-12-02 15:46:13,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 65 remaining) [2024-12-02 15:46:13,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 65 remaining) [2024-12-02 15:46:13,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 65 remaining) [2024-12-02 15:46:13,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 65 remaining) [2024-12-02 15:46:13,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 65 remaining) [2024-12-02 15:46:13,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 65 remaining) [2024-12-02 15:46:13,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 65 remaining) [2024-12-02 15:46:13,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 65 remaining) [2024-12-02 15:46:13,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 65 remaining) [2024-12-02 15:46:13,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 65 remaining) [2024-12-02 15:46:13,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 65 remaining) [2024-12-02 15:46:13,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 65 remaining) [2024-12-02 15:46:13,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 65 remaining) [2024-12-02 15:46:13,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 65 remaining) [2024-12-02 15:46:13,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 65 remaining) [2024-12-02 15:46:13,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 65 remaining) [2024-12-02 15:46:13,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 65 remaining) [2024-12-02 15:46:13,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 65 remaining) [2024-12-02 15:46:13,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 65 remaining) [2024-12-02 15:46:13,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 65 remaining) [2024-12-02 15:46:13,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 65 remaining) [2024-12-02 15:46:13,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr14ASSERT_VIOLATIONMEMORY_LEAK (10 of 65 remaining) [2024-12-02 15:46:13,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 65 remaining) [2024-12-02 15:46:13,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 65 remaining) [2024-12-02 15:46:13,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 65 remaining) [2024-12-02 15:46:13,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 65 remaining) [2024-12-02 15:46:13,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 65 remaining) [2024-12-02 15:46:13,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 65 remaining) [2024-12-02 15:46:13,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 65 remaining) [2024-12-02 15:46:13,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 65 remaining) [2024-12-02 15:46:13,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 65 remaining) [2024-12-02 15:46:13,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 65 remaining) [2024-12-02 15:46:13,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 15:46:13,224 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:13,227 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 15:46:13,227 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-02 15:46:13,312 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-12-02 15:46:13,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 231 transitions, 506 flow [2024-12-02 15:46:13,460 INFO L124 PetriNetUnfolderBase]: 147/845 cut-off events. [2024-12-02 15:46:13,460 INFO L125 PetriNetUnfolderBase]: For 72/89 co-relation queries the response was YES. [2024-12-02 15:46:13,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 845 events. 147/845 cut-off events. For 72/89 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6084 event pairs, 2 based on Foata normal form. 0/482 useless extension candidates. Maximal degree in co-relation 533. Up to 32 conditions per place. [2024-12-02 15:46:13,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 231 transitions, 506 flow [2024-12-02 15:46:13,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 231 transitions, 506 flow [2024-12-02 15:46:13,482 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:46:13,482 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=None, 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;@47240851, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:46:13,482 INFO L334 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2024-12-02 15:46:13,484 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:46:13,484 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-12-02 15:46:13,484 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 15:46:13,484 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:46:13,484 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-12-02 15:46:13,484 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 87 more)] === [2024-12-02 15:46:13,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:13,485 INFO L85 PathProgramCache]: Analyzing trace with hash 26746, now seen corresponding path program 1 times [2024-12-02 15:46:13,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:13,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325903452] [2024-12-02 15:46:13,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:13,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:46:13,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:13,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325903452] [2024-12-02 15:46:13,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325903452] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:46:13,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:46:13,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 15:46:13,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783638159] [2024-12-02 15:46:13,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:46:13,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:46:13,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:13,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:46:13,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:46:13,598 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 231 [2024-12-02 15:46:13,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 231 transitions, 506 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:13,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:46:13,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 231 [2024-12-02 15:46:13,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand