./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_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_d2f4bb79-d5be-4518-bb39-7557cbc1a7ba/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f4bb79-d5be-4518-bb39-7557cbc1a7ba/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_d2f4bb79-d5be-4518-bb39-7557cbc1a7ba/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f4bb79-d5be-4518-bb39-7557cbc1a7ba/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f4bb79-d5be-4518-bb39-7557cbc1a7ba/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_d2f4bb79-d5be-4518-bb39-7557cbc1a7ba/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 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:36:33,803 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:36:33,860 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f4bb79-d5be-4518-bb39-7557cbc1a7ba/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 08:36:33,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:36:33,865 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:36:33,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:36:33,888 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:36:33,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:36:33,889 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:36:33,889 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:36:33,889 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:36:33,889 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:36:33,889 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:36:33,889 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:36:33,889 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:36:33,889 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:36:33,890 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:36:33,890 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:36:33,890 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:36:33,890 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:36:33,890 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 08:36:33,890 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 08:36:33,890 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 08:36:33,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:36:33,890 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 08:36:33,890 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 08:36:33,890 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:36:33,891 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:36:33,891 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:36:33,891 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:36:33,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:36:33,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:36:33,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:36:33,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:36:33,891 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:36:33,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:36:33,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:36:33,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:36:33,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:36:33,892 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:36:33,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:36:33,892 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:36:33,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:36:33,892 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:36:33,892 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:36:33,892 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:36:33,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:36:33,892 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_d2f4bb79-d5be-4518-bb39-7557cbc1a7ba/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 -> 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 [2024-12-02 08:36:34,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:36:34,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:36:34,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:36:34,145 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:36:34,146 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:36:34,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f4bb79-d5be-4518-bb39-7557cbc1a7ba/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2024-12-02 08:36:36,810 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f4bb79-d5be-4518-bb39-7557cbc1a7ba/bin/uautomizer-verify-84ZbGMXZE1/data/b7c89d681/8b90a1a70f424f43b9e2e3e816519791/FLAG4384086aa [2024-12-02 08:36:37,031 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:36:37,031 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f4bb79-d5be-4518-bb39-7557cbc1a7ba/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2024-12-02 08:36:37,042 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f4bb79-d5be-4518-bb39-7557cbc1a7ba/bin/uautomizer-verify-84ZbGMXZE1/data/b7c89d681/8b90a1a70f424f43b9e2e3e816519791/FLAG4384086aa [2024-12-02 08:36:37,055 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f4bb79-d5be-4518-bb39-7557cbc1a7ba/bin/uautomizer-verify-84ZbGMXZE1/data/b7c89d681/8b90a1a70f424f43b9e2e3e816519791 [2024-12-02 08:36:37,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:36:37,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:36:37,059 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:36:37,059 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:36:37,064 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:36:37,064 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:36:37" (1/1) ... [2024-12-02 08:36:37,065 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5932316f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:36:37, skipping insertion in model container [2024-12-02 08:36:37,065 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:36:37" (1/1) ... [2024-12-02 08:36:37,091 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:36:37,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:36:37,368 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:36:37,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:36:37,440 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:36:37,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:36:37 WrapperNode [2024-12-02 08:36:37,441 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:36:37,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:36:37,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:36:37,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:36:37,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:36:37" (1/1) ... [2024-12-02 08:36:37,457 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:36:37" (1/1) ... [2024-12-02 08:36:37,475 INFO L138 Inliner]: procedures = 173, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 115 [2024-12-02 08:36:37,476 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:36:37,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:36:37,476 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:36:37,476 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:36:37,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:36:37" (1/1) ... [2024-12-02 08:36:37,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:36:37" (1/1) ... [2024-12-02 08:36:37,487 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:36:37" (1/1) ... [2024-12-02 08:36:37,500 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 2, 5, 5]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0]. [2024-12-02 08:36:37,500 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:36:37" (1/1) ... [2024-12-02 08:36:37,500 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:36:37" (1/1) ... [2024-12-02 08:36:37,507 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:36:37" (1/1) ... [2024-12-02 08:36:37,507 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:36:37" (1/1) ... [2024-12-02 08:36:37,511 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:36:37" (1/1) ... [2024-12-02 08:36:37,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:36:37" (1/1) ... [2024-12-02 08:36:37,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:36:37" (1/1) ... [2024-12-02 08:36:37,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:36:37,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:36:37,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:36:37,516 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:36:37,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:36:37" (1/1) ... [2024-12-02 08:36:37,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:36:37,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f4bb79-d5be-4518-bb39-7557cbc1a7ba/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:36:37,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f4bb79-d5be-4518-bb39-7557cbc1a7ba/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:36:37,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2f4bb79-d5be-4518-bb39-7557cbc1a7ba/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:36:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 08:36:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 08:36:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 08:36:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 08:36:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 08:36:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 08:36:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 08:36:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 08:36:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 08:36:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:36:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 08:36:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-12-02 08:36:37,569 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-12-02 08:36:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 08:36:37,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:36:37,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 08:36:37,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 08:36:37,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 08:36:37,570 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 08:36:37,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:36:37,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:36:37,572 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 08:36:37,675 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:36:37,676 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:36:37,860 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 08:36:37,860 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:36:37,977 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:36:37,977 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-12-02 08:36:37,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:36:37 BoogieIcfgContainer [2024-12-02 08:36:37,977 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:36:37,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:36:37,979 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:36:37,984 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:36:37,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:36:37" (1/3) ... [2024-12-02 08:36:37,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b3a645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:36:37, skipping insertion in model container [2024-12-02 08:36:37,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:36:37" (2/3) ... [2024-12-02 08:36:37,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b3a645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:36:37, skipping insertion in model container [2024-12-02 08:36:37,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:36:37" (3/3) ... [2024-12-02 08:36:37,986 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2024-12-02 08:36:38,000 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:36:38,002 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_05-lockfuns_racefree.i that has 2 procedures, 51 locations, 1 initial locations, 6 loop locations, and 6 error locations. [2024-12-02 08:36:38,002 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 08:36:38,038 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-12-02 08:36:38,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 62 transitions, 131 flow [2024-12-02 08:36:38,120 INFO L124 PetriNetUnfolderBase]: 15/94 cut-off events. [2024-12-02 08:36:38,122 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 08:36:38,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 94 events. 15/94 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 350 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2024-12-02 08:36:38,126 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 62 transitions, 131 flow [2024-12-02 08:36:38,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 62 transitions, 131 flow [2024-12-02 08:36:38,137 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:36:38,147 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;@3ca16412, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:36:38,147 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-12-02 08:36:38,152 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:36:38,152 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-12-02 08:36:38,152 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:36:38,152 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:36:38,153 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:36:38,153 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:36:38,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:36:38,158 INFO L85 PathProgramCache]: Analyzing trace with hash 342017, now seen corresponding path program 1 times [2024-12-02 08:36:38,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:36:38,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983501430] [2024-12-02 08:36:38,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:36:38,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:36:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:36:38,379 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 08:36:38,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:36:38,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983501430] [2024-12-02 08:36:38,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983501430] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:36:38,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:36:38,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 08:36:38,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569060479] [2024-12-02 08:36:38,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:36:38,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:36:38,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:36:38,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:36:38,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:36:38,438 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-12-02 08:36:38,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 62 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 08:36:38,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:36:38,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-12-02 08:36:38,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:36:38,636 INFO L124 PetriNetUnfolderBase]: 177/564 cut-off events. [2024-12-02 08:36:38,637 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 08:36:38,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 564 events. 177/564 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2878 event pairs, 154 based on Foata normal form. 105/649 useless extension candidates. Maximal degree in co-relation 912. Up to 350 conditions per place. [2024-12-02 08:36:38,642 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 39 selfloop transitions, 2 changer transitions 1/60 dead transitions. [2024-12-02 08:36:38,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 211 flow [2024-12-02 08:36:38,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:36:38,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:36:38,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-12-02 08:36:38,655 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2024-12-02 08:36:38,656 INFO L175 Difference]: Start difference. First operand has 54 places, 62 transitions, 131 flow. Second operand 3 states and 114 transitions. [2024-12-02 08:36:38,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 211 flow [2024-12-02 08:36:38,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 211 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:36:38,663 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 107 flow [2024-12-02 08:36:38,666 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2024-12-02 08:36:38,669 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-12-02 08:36:38,669 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 107 flow [2024-12-02 08:36:38,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 08:36:38,669 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:36:38,669 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:36:38,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:36:38,670 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:36:38,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:36:38,670 INFO L85 PathProgramCache]: Analyzing trace with hash 342018, now seen corresponding path program 1 times [2024-12-02 08:36:38,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:36:38,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854686386] [2024-12-02 08:36:38,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:36:38,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:36:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:36:38,787 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 08:36:38,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:36:38,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854686386] [2024-12-02 08:36:38,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854686386] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:36:38,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:36:38,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 08:36:38,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748246330] [2024-12-02 08:36:38,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:36:38,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:36:38,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:36:38,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:36:38,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:36:38,804 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-12-02 08:36:38,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 08:36:38,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:36:38,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-12-02 08:36:38,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:36:38,951 INFO L124 PetriNetUnfolderBase]: 154/512 cut-off events. [2024-12-02 08:36:38,951 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2024-12-02 08:36:38,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 512 events. 154/512 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2578 event pairs, 104 based on Foata normal form. 1/483 useless extension candidates. Maximal degree in co-relation 842. Up to 326 conditions per place. [2024-12-02 08:36:38,954 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 39 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-12-02 08:36:38,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 213 flow [2024-12-02 08:36:38,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:36:38,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:36:38,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-12-02 08:36:38,956 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-12-02 08:36:38,956 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 107 flow. Second operand 3 states and 106 transitions. [2024-12-02 08:36:38,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 213 flow [2024-12-02 08:36:38,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 60 transitions, 209 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 08:36:38,959 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 113 flow [2024-12-02 08:36:38,959 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2024-12-02 08:36:38,960 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-12-02 08:36:38,960 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 113 flow [2024-12-02 08:36:38,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 08:36:38,960 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:36:38,960 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-12-02 08:36:38,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:36:38,960 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:36:38,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:36:38,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1956994527, now seen corresponding path program 1 times [2024-12-02 08:36:38,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:36:38,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406234818] [2024-12-02 08:36:38,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:36:38,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:36:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:36:39,114 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 08:36:39,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:36:39,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406234818] [2024-12-02 08:36:39,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406234818] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:36:39,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:36:39,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:36:39,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377820267] [2024-12-02 08:36:39,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:36:39,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:36:39,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:36:39,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:36:39,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:36:39,154 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 62 [2024-12-02 08:36:39,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 08:36:39,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:36:39,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 62 [2024-12-02 08:36:39,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:36:39,231 INFO L124 PetriNetUnfolderBase]: 33/103 cut-off events. [2024-12-02 08:36:39,231 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-12-02 08:36:39,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 103 events. 33/103 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 277 event pairs, 0 based on Foata normal form. 24/124 useless extension candidates. Maximal degree in co-relation 191. Up to 69 conditions per place. [2024-12-02 08:36:39,232 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 27 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-12-02 08:36:39,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 142 flow [2024-12-02 08:36:39,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:36:39,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:36:39,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-12-02 08:36:39,234 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4475806451612903 [2024-12-02 08:36:39,234 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 113 flow. Second operand 4 states and 111 transitions. [2024-12-02 08:36:39,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 142 flow [2024-12-02 08:36:39,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 37 transitions, 136 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 08:36:39,235 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 56 flow [2024-12-02 08:36:39,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=56, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-12-02 08:36:39,236 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -24 predicate places. [2024-12-02 08:36:39,236 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 56 flow [2024-12-02 08:36:39,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 08:36:39,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:36:39,236 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-12-02 08:36:39,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:36:39,237 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:36:39,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:36:39,237 INFO L85 PathProgramCache]: Analyzing trace with hash -537287876, now seen corresponding path program 1 times [2024-12-02 08:36:39,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:36:39,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372745902] [2024-12-02 08:36:39,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:36:39,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:36:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:36:39,256 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:36:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:36:39,282 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 08:36:39,282 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:36:39,283 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-12-02 08:36:39,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-12-02 08:36:39,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-12-02 08:36:39,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-12-02 08:36:39,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-12-02 08:36:39,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-12-02 08:36:39,285 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-12-02 08:36:39,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:36:39,286 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-12-02 08:36:39,289 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 08:36:39,289 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-02 08:36:39,308 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-12-02 08:36:39,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 88 transitions, 192 flow [2024-12-02 08:36:39,325 INFO L124 PetriNetUnfolderBase]: 27/164 cut-off events. [2024-12-02 08:36:39,325 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-12-02 08:36:39,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 164 events. 27/164 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 695 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2024-12-02 08:36:39,327 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 88 transitions, 192 flow [2024-12-02 08:36:39,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 88 transitions, 192 flow [2024-12-02 08:36:39,329 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:36:39,329 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;@3ca16412, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:36:39,329 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-12-02 08:36:39,331 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:36:39,331 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-12-02 08:36:39,331 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:36:39,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:36:39,331 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:36:39,331 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:36:39,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:36:39,332 INFO L85 PathProgramCache]: Analyzing trace with hash 429401, now seen corresponding path program 1 times [2024-12-02 08:36:39,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:36:39,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974908786] [2024-12-02 08:36:39,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:36:39,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:36:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:36:39,365 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 08:36:39,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:36:39,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974908786] [2024-12-02 08:36:39,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974908786] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:36:39,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:36:39,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 08:36:39,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241952541] [2024-12-02 08:36:39,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:36:39,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:36:39,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:36:39,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:36:39,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:36:39,377 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 88 [2024-12-02 08:36:39,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 08:36:39,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:36:39,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 88 [2024-12-02 08:36:39,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:36:40,590 INFO L124 PetriNetUnfolderBase]: 4612/9436 cut-off events. [2024-12-02 08:36:40,590 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-12-02 08:36:40,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16857 conditions, 9436 events. 4612/9436 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 73157 event pairs, 4026 based on Foata normal form. 2120/11218 useless extension candidates. Maximal degree in co-relation 10528. Up to 6443 conditions per place. [2024-12-02 08:36:40,621 INFO L140 encePairwiseOnDemand]: 68/88 looper letters, 63 selfloop transitions, 2 changer transitions 1/91 dead transitions. [2024-12-02 08:36:40,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 91 transitions, 330 flow [2024-12-02 08:36:40,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:36:40,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:36:40,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2024-12-02 08:36:40,622 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6477272727272727 [2024-12-02 08:36:40,623 INFO L175 Difference]: Start difference. First operand has 75 places, 88 transitions, 192 flow. Second operand 3 states and 171 transitions. [2024-12-02 08:36:40,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 91 transitions, 330 flow [2024-12-02 08:36:40,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 91 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:36:40,625 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 156 flow [2024-12-02 08:36:40,625 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2024-12-02 08:36:40,626 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-12-02 08:36:40,626 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 156 flow [2024-12-02 08:36:40,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 08:36:40,626 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:36:40,626 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:36:40,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:36:40,626 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:36:40,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:36:40,627 INFO L85 PathProgramCache]: Analyzing trace with hash 429402, now seen corresponding path program 1 times [2024-12-02 08:36:40,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:36:40,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545553415] [2024-12-02 08:36:40,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:36:40,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:36:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:36:40,686 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 08:36:40,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:36:40,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545553415] [2024-12-02 08:36:40,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545553415] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:36:40,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:36:40,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 08:36:40,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268458529] [2024-12-02 08:36:40,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:36:40,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:36:40,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:36:40,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:36:40,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:36:40,698 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 88 [2024-12-02 08:36:40,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 08:36:40,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:36:40,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 88 [2024-12-02 08:36:40,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:36:41,221 INFO L124 PetriNetUnfolderBase]: 4039/8560 cut-off events. [2024-12-02 08:36:41,221 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-12-02 08:36:41,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15231 conditions, 8560 events. 4039/8560 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 68638 event pairs, 1881 based on Foata normal form. 1/8212 useless extension candidates. Maximal degree in co-relation 13963. Up to 6419 conditions per place. [2024-12-02 08:36:41,252 INFO L140 encePairwiseOnDemand]: 84/88 looper letters, 53 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2024-12-02 08:36:41,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 81 transitions, 292 flow [2024-12-02 08:36:41,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:36:41,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:36:41,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-12-02 08:36:41,254 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-12-02 08:36:41,254 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 156 flow. Second operand 3 states and 141 transitions. [2024-12-02 08:36:41,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 81 transitions, 292 flow [2024-12-02 08:36:41,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 81 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 08:36:41,263 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 166 flow [2024-12-02 08:36:41,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2024-12-02 08:36:41,264 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-12-02 08:36:41,264 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 166 flow [2024-12-02 08:36:41,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 08:36:41,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:36:41,265 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-12-02 08:36:41,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 08:36:41,265 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:36:41,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:36:41,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1437977185, now seen corresponding path program 1 times [2024-12-02 08:36:41,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:36:41,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238808608] [2024-12-02 08:36:41,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:36:41,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:36:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:36:41,350 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 08:36:41,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:36:41,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238808608] [2024-12-02 08:36:41,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238808608] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:36:41,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:36:41,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:36:41,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386695470] [2024-12-02 08:36:41,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:36:41,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:36:41,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:36:41,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:36:41,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:36:41,374 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 88 [2024-12-02 08:36:41,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 08:36:41,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:36:41,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 88 [2024-12-02 08:36:41,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:36:42,113 INFO L124 PetriNetUnfolderBase]: 4028/8544 cut-off events. [2024-12-02 08:36:42,114 INFO L125 PetriNetUnfolderBase]: For 512/522 co-relation queries the response was YES. [2024-12-02 08:36:42,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15492 conditions, 8544 events. 4028/8544 cut-off events. For 512/522 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 67702 event pairs, 2251 based on Foata normal form. 12/8320 useless extension candidates. Maximal degree in co-relation 11530. Up to 6074 conditions per place. [2024-12-02 08:36:42,149 INFO L140 encePairwiseOnDemand]: 84/88 looper letters, 75 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2024-12-02 08:36:42,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 105 transitions, 398 flow [2024-12-02 08:36:42,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:36:42,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:36:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-12-02 08:36:42,151 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-12-02 08:36:42,151 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 166 flow. Second operand 4 states and 192 transitions. [2024-12-02 08:36:42,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 105 transitions, 398 flow [2024-12-02 08:36:42,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 105 transitions, 396 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 08:36:42,154 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 183 flow [2024-12-02 08:36:42,154 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2024-12-02 08:36:42,155 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2024-12-02 08:36:42,155 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 183 flow [2024-12-02 08:36:42,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 08:36:42,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:36:42,155 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-12-02 08:36:42,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 08:36:42,155 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:36:42,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:36:42,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1746821049, now seen corresponding path program 1 times [2024-12-02 08:36:42,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:36:42,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177799867] [2024-12-02 08:36:42,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:36:42,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:36:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:36:42,305 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 08:36:42,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:36:42,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177799867] [2024-12-02 08:36:42,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177799867] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:36:42,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:36:42,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:36:42,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798524130] [2024-12-02 08:36:42,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:36:42,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:36:42,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:36:42,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:36:42,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:36:42,344 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 88 [2024-12-02 08:36:42,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 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 08:36:42,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:36:42,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 88 [2024-12-02 08:36:42,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:36:43,173 INFO L124 PetriNetUnfolderBase]: 4039/8239 cut-off events. [2024-12-02 08:36:43,173 INFO L125 PetriNetUnfolderBase]: For 879/887 co-relation queries the response was YES. [2024-12-02 08:36:43,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15525 conditions, 8239 events. 4039/8239 cut-off events. For 879/887 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 64001 event pairs, 1407 based on Foata normal form. 144/8189 useless extension candidates. Maximal degree in co-relation 10704. Up to 4850 conditions per place. [2024-12-02 08:36:43,216 INFO L140 encePairwiseOnDemand]: 83/88 looper letters, 119 selfloop transitions, 6 changer transitions 0/150 dead transitions. [2024-12-02 08:36:43,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 150 transitions, 589 flow [2024-12-02 08:36:43,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:36:43,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 08:36:43,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 288 transitions. [2024-12-02 08:36:43,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-12-02 08:36:43,218 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 183 flow. Second operand 6 states and 288 transitions. [2024-12-02 08:36:43,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 150 transitions, 589 flow [2024-12-02 08:36:43,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 150 transitions, 580 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-12-02 08:36:43,225 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 187 flow [2024-12-02 08:36:43,225 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2024-12-02 08:36:43,226 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2024-12-02 08:36:43,226 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 187 flow [2024-12-02 08:36:43,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 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 08:36:43,226 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:36:43,226 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-12-02 08:36:43,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 08:36:43,227 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:36:43,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:36:43,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1683122758, now seen corresponding path program 1 times [2024-12-02 08:36:43,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:36:43,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178831075] [2024-12-02 08:36:43,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:36:43,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:36:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:36:43,246 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:36:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:36:43,262 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 08:36:43,262 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:36:43,262 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-12-02 08:36:43,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-12-02 08:36:43,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-12-02 08:36:43,262 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-12-02 08:36:43,263 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-12-02 08:36:43,263 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-12-02 08:36:43,263 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-12-02 08:36:43,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 08:36:43,263 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-12-02 08:36:43,264 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 08:36:43,264 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-12-02 08:36:43,289 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-12-02 08:36:43,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 114 transitions, 255 flow [2024-12-02 08:36:43,324 INFO L124 PetriNetUnfolderBase]: 42/255 cut-off events. [2024-12-02 08:36:43,324 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-12-02 08:36:43,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 255 events. 42/255 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1148 event pairs, 1 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 175. Up to 12 conditions per place. [2024-12-02 08:36:43,325 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 114 transitions, 255 flow [2024-12-02 08:36:43,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 114 transitions, 255 flow [2024-12-02 08:36:43,328 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:36:43,329 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;@3ca16412, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:36:43,329 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-12-02 08:36:43,331 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:36:43,331 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-12-02 08:36:43,331 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:36:43,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:36:43,331 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:36:43,331 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:36:43,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:36:43,332 INFO L85 PathProgramCache]: Analyzing trace with hash 542603, now seen corresponding path program 1 times [2024-12-02 08:36:43,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:36:43,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772405850] [2024-12-02 08:36:43,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:36:43,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:36:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:36:43,366 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 08:36:43,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:36:43,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772405850] [2024-12-02 08:36:43,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772405850] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:36:43,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:36:43,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 08:36:43,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024714678] [2024-12-02 08:36:43,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:36:43,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:36:43,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:36:43,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:36:43,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:36:43,376 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 114 [2024-12-02 08:36:43,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 114 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 08:36:43,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:36:43,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 114 [2024-12-02 08:36:43,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:36:51,616 INFO L124 PetriNetUnfolderBase]: 86952/146186 cut-off events. [2024-12-02 08:36:51,616 INFO L125 PetriNetUnfolderBase]: For 1648/1648 co-relation queries the response was YES. [2024-12-02 08:36:51,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268025 conditions, 146186 events. 86952/146186 cut-off events. For 1648/1648 co-relation queries the response was YES. Maximal size of possible extension queue 3077. Compared 1374650 event pairs, 75615 based on Foata normal form. 36536/177717 useless extension candidates. Maximal degree in co-relation 69283. Up to 105165 conditions per place. [2024-12-02 08:36:52,258 INFO L140 encePairwiseOnDemand]: 88/114 looper letters, 87 selfloop transitions, 2 changer transitions 1/122 dead transitions. [2024-12-02 08:36:52,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 122 transitions, 451 flow [2024-12-02 08:36:52,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:36:52,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:36:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2024-12-02 08:36:52,259 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-12-02 08:36:52,259 INFO L175 Difference]: Start difference. First operand has 96 places, 114 transitions, 255 flow. Second operand 3 states and 228 transitions. [2024-12-02 08:36:52,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 122 transitions, 451 flow [2024-12-02 08:36:52,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 122 transitions, 451 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:36:52,262 INFO L231 Difference]: Finished difference. Result has 95 places, 88 transitions, 207 flow [2024-12-02 08:36:52,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=207, PETRI_PLACES=95, PETRI_TRANSITIONS=88} [2024-12-02 08:36:52,263 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, -1 predicate places. [2024-12-02 08:36:52,263 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 88 transitions, 207 flow [2024-12-02 08:36:52,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 08:36:52,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:36:52,263 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:36:52,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 08:36:52,263 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:36:52,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:36:52,264 INFO L85 PathProgramCache]: Analyzing trace with hash 542604, now seen corresponding path program 1 times [2024-12-02 08:36:52,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:36:52,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928691096] [2024-12-02 08:36:52,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:36:52,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:36:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:36:52,306 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 08:36:52,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:36:52,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928691096] [2024-12-02 08:36:52,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928691096] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:36:52,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:36:52,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 08:36:52,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219819997] [2024-12-02 08:36:52,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:36:52,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:36:52,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:36:52,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:36:52,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:36:52,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 114 [2024-12-02 08:36:52,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 88 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 08:36:52,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:36:52,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 114 [2024-12-02 08:36:52,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:36:58,947 INFO L124 PetriNetUnfolderBase]: 75797/130654 cut-off events. [2024-12-02 08:36:58,947 INFO L125 PetriNetUnfolderBase]: For 3082/3082 co-relation queries the response was YES. [2024-12-02 08:36:59,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239133 conditions, 130654 events. 75797/130654 cut-off events. For 3082/3082 co-relation queries the response was YES. Maximal size of possible extension queue 3029. Compared 1254506 event pairs, 49182 based on Foata normal form. 1/126019 useless extension candidates. Maximal degree in co-relation 219122. Up to 105141 conditions per place. [2024-12-02 08:36:59,584 INFO L140 encePairwiseOnDemand]: 110/114 looper letters, 66 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-12-02 08:36:59,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 101 transitions, 369 flow [2024-12-02 08:36:59,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:36:59,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:36:59,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-12-02 08:36:59,586 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5116959064327485 [2024-12-02 08:36:59,586 INFO L175 Difference]: Start difference. First operand has 95 places, 88 transitions, 207 flow. Second operand 3 states and 175 transitions. [2024-12-02 08:36:59,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 101 transitions, 369 flow [2024-12-02 08:37:00,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 101 transitions, 365 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 08:37:00,004 INFO L231 Difference]: Finished difference. Result has 95 places, 89 transitions, 217 flow [2024-12-02 08:37:00,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=217, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2024-12-02 08:37:00,005 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, -1 predicate places. [2024-12-02 08:37:00,005 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 217 flow [2024-12-02 08:37:00,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 08:37:00,005 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:37:00,005 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-12-02 08:37:00,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 08:37:00,006 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:37:00,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:00,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1387556613, now seen corresponding path program 1 times [2024-12-02 08:37:00,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:00,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781242508] [2024-12-02 08:37:00,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:00,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:00,125 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 08:37:00,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:00,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781242508] [2024-12-02 08:37:00,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781242508] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:00,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:00,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:37:00,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069337748] [2024-12-02 08:37:00,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:00,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:37:00,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:00,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:37:00,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:37:00,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 114 [2024-12-02 08:37:00,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 08:37:00,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:37:00,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 114 [2024-12-02 08:37:00,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:37:07,271 INFO L124 PetriNetUnfolderBase]: 75686/129181 cut-off events. [2024-12-02 08:37:07,271 INFO L125 PetriNetUnfolderBase]: For 5964/6084 co-relation queries the response was YES. [2024-12-02 08:37:07,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239014 conditions, 129181 events. 75686/129181 cut-off events. For 5964/6084 co-relation queries the response was YES. Maximal size of possible extension queue 3020. Compared 1229923 event pairs, 27887 based on Foata normal form. 1896/128147 useless extension candidates. Maximal degree in co-relation 178971. Up to 79017 conditions per place. [2024-12-02 08:37:07,733 INFO L140 encePairwiseOnDemand]: 109/114 looper letters, 131 selfloop transitions, 5 changer transitions 0/168 dead transitions. [2024-12-02 08:37:07,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 168 transitions, 645 flow [2024-12-02 08:37:07,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:37:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 08:37:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 308 transitions. [2024-12-02 08:37:07,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5403508771929825 [2024-12-02 08:37:07,735 INFO L175 Difference]: Start difference. First operand has 95 places, 89 transitions, 217 flow. Second operand 5 states and 308 transitions. [2024-12-02 08:37:07,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 168 transitions, 645 flow [2024-12-02 08:37:07,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 168 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 08:37:07,750 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 228 flow [2024-12-02 08:37:07,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2024-12-02 08:37:07,750 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2024-12-02 08:37:07,751 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 228 flow [2024-12-02 08:37:07,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 08:37:07,751 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:37:07,751 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-12-02 08:37:07,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 08:37:07,751 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:37:07,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:07,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1871336961, now seen corresponding path program 1 times [2024-12-02 08:37:07,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:07,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739874958] [2024-12-02 08:37:07,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:07,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:37:07,772 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:37:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:37:07,789 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 08:37:07,789 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:37:07,789 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-12-02 08:37:07,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-12-02 08:37:07,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-12-02 08:37:07,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-12-02 08:37:07,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-12-02 08:37:07,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-12-02 08:37:07,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-12-02 08:37:07,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 08:37:07,790 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-12-02 08:37:07,790 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 08:37:07,790 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-12-02 08:37:07,820 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 08:37:07,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 140 transitions, 320 flow [2024-12-02 08:37:07,868 INFO L124 PetriNetUnfolderBase]: 65/390 cut-off events. [2024-12-02 08:37:07,868 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-12-02 08:37:07,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 390 events. 65/390 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1937 event pairs, 6 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 279. Up to 32 conditions per place. [2024-12-02 08:37:07,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 140 transitions, 320 flow [2024-12-02 08:37:07,873 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 140 transitions, 320 flow [2024-12-02 08:37:07,874 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:37:07,875 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;@3ca16412, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:37:07,875 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-12-02 08:37:07,876 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:37:07,876 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-12-02 08:37:07,876 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:37:07,877 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:37:07,877 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:37:07,877 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 08:37:07,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:07,877 INFO L85 PathProgramCache]: Analyzing trace with hash 681623, now seen corresponding path program 1 times [2024-12-02 08:37:07,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:07,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014588706] [2024-12-02 08:37:07,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:07,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:07,906 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 08:37:07,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:07,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014588706] [2024-12-02 08:37:07,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014588706] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:07,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:07,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 08:37:07,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307525108] [2024-12-02 08:37:07,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:07,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:37:07,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:07,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:37:07,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:37:07,917 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 140 [2024-12-02 08:37:07,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 140 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 08:37:07,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:37:07,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 140 [2024-12-02 08:37:07,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand