./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:04:16,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:04:16,526 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 16:04:16,530 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:04:16,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:04:16,558 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:04:16,559 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:04:16,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:04:16,560 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:04:16,560 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:04:16,563 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:04:16,563 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:04:16,564 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:04:16,566 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:04:16,566 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:04:16,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:04:16,567 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:04:16,572 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:04:16,572 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:04:16,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:04:16,573 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 16:04:16,573 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 16:04:16,574 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 16:04:16,574 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:04:16,574 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 16:04:16,575 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:04:16,575 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:04:16,575 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:04:16,576 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:04:16,576 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:04:16,576 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:04:16,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:04:16,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:04:16,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:04:16,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:04:16,579 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:04:16,579 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:04:16,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:04:16,580 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:04:16,580 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:04:16,580 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:04:16,581 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:04:16,581 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 [2024-11-08 16:04:16,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:04:16,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:04:16,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:04:16,892 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:04:16,893 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:04:16,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i Unable to find full path for "g++" [2024-11-08 16:04:18,994 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:04:19,411 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:04:19,412 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2024-11-08 16:04:19,444 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX/data/2ddb9b2dc/54fe35ace69140778af19be7dea153d4/FLAGa3ed914cf [2024-11-08 16:04:19,573 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX/data/2ddb9b2dc/54fe35ace69140778af19be7dea153d4 [2024-11-08 16:04:19,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:04:19,576 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:04:19,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:04:19,578 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:04:19,584 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:04:19,585 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:04:19" (1/1) ... [2024-11-08 16:04:19,586 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576e2bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:19, skipping insertion in model container [2024-11-08 16:04:19,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:04:19" (1/1) ... [2024-11-08 16:04:19,659 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:04:20,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:04:20,390 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:04:20,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:04:20,536 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:04:20,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:20 WrapperNode [2024-11-08 16:04:20,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:04:20,539 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:04:20,539 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:04:20,539 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:04:20,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:20" (1/1) ... [2024-11-08 16:04:20,582 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:20" (1/1) ... [2024-11-08 16:04:20,645 INFO L138 Inliner]: procedures = 279, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 214 [2024-11-08 16:04:20,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:04:20,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:04:20,650 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:04:20,650 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:04:20,664 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:20" (1/1) ... [2024-11-08 16:04:20,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:20" (1/1) ... [2024-11-08 16:04:20,673 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:20" (1/1) ... [2024-11-08 16:04:20,715 INFO L175 MemorySlicer]: Split 35 memory accesses to 7 slices as follows [2, 5, 5, 2, 5, 14, 2]. 40 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 0, 5, 0, 0]. The 10 writes are split as follows [0, 0, 0, 1, 0, 8, 1]. [2024-11-08 16:04:20,720 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:20" (1/1) ... [2024-11-08 16:04:20,720 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:20" (1/1) ... [2024-11-08 16:04:20,735 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:20" (1/1) ... [2024-11-08 16:04:20,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:20" (1/1) ... [2024-11-08 16:04:20,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:20" (1/1) ... [2024-11-08 16:04:20,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:20" (1/1) ... [2024-11-08 16:04:20,793 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:04:20,797 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:04:20,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:04:20,799 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:04:20,800 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:20" (1/1) ... [2024-11-08 16:04:20,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:04:20,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:20,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:04:20,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:04:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 16:04:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 16:04:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 16:04:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-08 16:04:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-08 16:04:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-08 16:04:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-08 16:04:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-08 16:04:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-08 16:04:20,903 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-08 16:04:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 16:04:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 16:04:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:04:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:04:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 16:04:20,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 16:04:20,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-08 16:04:20,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-08 16:04:20,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-08 16:04:20,905 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-08 16:04:20,906 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-08 16:04:20,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:04:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:04:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 16:04:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 16:04:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-08 16:04:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-08 16:04:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-08 16:04:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 16:04:20,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 16:04:20,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:04:20,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 16:04:20,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 16:04:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-08 16:04:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-08 16:04:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-08 16:04:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-08 16:04:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-08 16:04:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:04:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:04:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 16:04:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 16:04:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-08 16:04:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-08 16:04:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-08 16:04:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:04:20,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:04:20,915 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 16:04:21,216 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:04:21,221 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:04:21,931 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:04:21,931 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:04:22,238 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:04:22,239 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-08 16:04:22,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:04:22 BoogieIcfgContainer [2024-11-08 16:04:22,240 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:04:22,243 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:04:22,243 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:04:22,248 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:04:22,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:04:19" (1/3) ... [2024-11-08 16:04:22,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf54314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:04:22, skipping insertion in model container [2024-11-08 16:04:22,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:20" (2/3) ... [2024-11-08 16:04:22,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf54314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:04:22, skipping insertion in model container [2024-11-08 16:04:22,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:04:22" (3/3) ... [2024-11-08 16:04:22,253 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2024-11-08 16:04:22,278 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:04:22,279 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-11-08 16:04:22,279 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:04:22,451 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 16:04:22,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 145 transitions, 310 flow [2024-11-08 16:04:22,656 INFO L124 PetriNetUnfolderBase]: 52/314 cut-off events. [2024-11-08 16:04:22,656 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-08 16:04:22,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 314 events. 52/314 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1583 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 164. Up to 8 conditions per place. [2024-11-08 16:04:22,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 145 transitions, 310 flow [2024-11-08 16:04:22,672 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 145 transitions, 310 flow [2024-11-08 16:04:22,683 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:04:22,692 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;@3622e054, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:04:22,692 INFO L334 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2024-11-08 16:04:22,699 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:04:22,705 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-08 16:04:22,705 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:04:22,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:22,706 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-08 16:04:22,706 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-08 16:04:22,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:22,721 INFO L85 PathProgramCache]: Analyzing trace with hash 18999, now seen corresponding path program 1 times [2024-11-08 16:04:22,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:22,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245596318] [2024-11-08 16:04:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:22,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:23,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:23,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245596318] [2024-11-08 16:04:23,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245596318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:23,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:23,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:04:23,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759691687] [2024-11-08 16:04:23,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:23,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:04:23,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:23,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:04:23,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:04:23,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 145 [2024-11-08 16:04:23,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 145 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:23,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:23,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 145 [2024-11-08 16:04:23,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:24,669 INFO L124 PetriNetUnfolderBase]: 2796/6528 cut-off events. [2024-11-08 16:04:24,670 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2024-11-08 16:04:24,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11055 conditions, 6528 events. 2796/6528 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 54619 event pairs, 2586 based on Foata normal form. 464/6230 useless extension candidates. Maximal degree in co-relation 9597. Up to 4430 conditions per place. [2024-11-08 16:04:24,726 INFO L140 encePairwiseOnDemand]: 128/145 looper letters, 52 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2024-11-08 16:04:24,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 129 transitions, 386 flow [2024-11-08 16:04:24,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:04:24,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:04:24,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2024-11-08 16:04:24,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6758620689655173 [2024-11-08 16:04:24,744 INFO L175 Difference]: Start difference. First operand has 127 places, 145 transitions, 310 flow. Second operand 3 states and 294 transitions. [2024-11-08 16:04:24,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 129 transitions, 386 flow [2024-11-08 16:04:24,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 129 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:04:24,765 INFO L231 Difference]: Finished difference. Result has 126 places, 129 transitions, 282 flow [2024-11-08 16:04:24,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=126, PETRI_TRANSITIONS=129} [2024-11-08 16:04:24,774 INFO L277 CegarLoopForPetriNet]: 127 programPoint places, -1 predicate places. [2024-11-08 16:04:24,774 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 129 transitions, 282 flow [2024-11-08 16:04:24,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:24,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:24,775 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-08 16:04:24,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:04:24,776 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-08 16:04:24,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:24,777 INFO L85 PathProgramCache]: Analyzing trace with hash 19000, now seen corresponding path program 1 times [2024-11-08 16:04:24,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:24,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787078918] [2024-11-08 16:04:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:24,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:25,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:25,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787078918] [2024-11-08 16:04:25,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787078918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:25,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:25,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:04:25,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484021207] [2024-11-08 16:04:25,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:25,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:04:25,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:25,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:04:25,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:04:25,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2024-11-08 16:04:25,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 129 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:25,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:25,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2024-11-08 16:04:25,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:26,290 INFO L124 PetriNetUnfolderBase]: 2796/6526 cut-off events. [2024-11-08 16:04:26,291 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-11-08 16:04:26,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11055 conditions, 6526 events. 2796/6526 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 54566 event pairs, 2586 based on Foata normal form. 2/5766 useless extension candidates. Maximal degree in co-relation 11043. Up to 4430 conditions per place. [2024-11-08 16:04:26,392 INFO L140 encePairwiseOnDemand]: 141/145 looper letters, 51 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2024-11-08 16:04:26,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 127 transitions, 384 flow [2024-11-08 16:04:26,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:04:26,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:04:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2024-11-08 16:04:26,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6505747126436782 [2024-11-08 16:04:26,398 INFO L175 Difference]: Start difference. First operand has 126 places, 129 transitions, 282 flow. Second operand 3 states and 283 transitions. [2024-11-08 16:04:26,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 127 transitions, 384 flow [2024-11-08 16:04:26,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 127 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:04:26,407 INFO L231 Difference]: Finished difference. Result has 124 places, 127 transitions, 278 flow [2024-11-08 16:04:26,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=124, PETRI_TRANSITIONS=127} [2024-11-08 16:04:26,409 INFO L277 CegarLoopForPetriNet]: 127 programPoint places, -3 predicate places. [2024-11-08 16:04:26,410 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 127 transitions, 278 flow [2024-11-08 16:04:26,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:26,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:26,411 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 16:04:26,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:04:26,412 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-08 16:04:26,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:26,413 INFO L85 PathProgramCache]: Analyzing trace with hash 383126377, now seen corresponding path program 1 times [2024-11-08 16:04:26,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:26,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686185997] [2024-11-08 16:04:26,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:26,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:26,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:26,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:26,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686185997] [2024-11-08 16:04:26,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686185997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:26,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:26,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:04:26,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126106008] [2024-11-08 16:04:26,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:26,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:04:26,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:26,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:04:26,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:04:26,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 145 [2024-11-08 16:04:26,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 127 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:26,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:26,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 145 [2024-11-08 16:04:26,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:27,937 INFO L124 PetriNetUnfolderBase]: 3192/7157 cut-off events. [2024-11-08 16:04:27,937 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2024-11-08 16:04:27,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12330 conditions, 7157 events. 3192/7157 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 60357 event pairs, 2202 based on Foata normal form. 0/6437 useless extension candidates. Maximal degree in co-relation 12318. Up to 3813 conditions per place. [2024-11-08 16:04:27,988 INFO L140 encePairwiseOnDemand]: 141/145 looper letters, 87 selfloop transitions, 2 changer transitions 0/159 dead transitions. [2024-11-08 16:04:27,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 159 transitions, 520 flow [2024-11-08 16:04:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:04:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:04:27,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2024-11-08 16:04:27,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7195402298850575 [2024-11-08 16:04:27,995 INFO L175 Difference]: Start difference. First operand has 124 places, 127 transitions, 278 flow. Second operand 3 states and 313 transitions. [2024-11-08 16:04:27,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 159 transitions, 520 flow [2024-11-08 16:04:27,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 159 transitions, 516 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:04:28,002 INFO L231 Difference]: Finished difference. Result has 122 places, 125 transitions, 274 flow [2024-11-08 16:04:28,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=122, PETRI_TRANSITIONS=125} [2024-11-08 16:04:28,004 INFO L277 CegarLoopForPetriNet]: 127 programPoint places, -5 predicate places. [2024-11-08 16:04:28,005 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 125 transitions, 274 flow [2024-11-08 16:04:28,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:28,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:28,006 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 16:04:28,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:04:28,006 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-08 16:04:28,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:28,007 INFO L85 PathProgramCache]: Analyzing trace with hash 383126378, now seen corresponding path program 1 times [2024-11-08 16:04:28,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:28,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134894263] [2024-11-08 16:04:28,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:28,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:28,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:28,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:28,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134894263] [2024-11-08 16:04:28,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134894263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:28,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:28,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:04:28,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715975585] [2024-11-08 16:04:28,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:28,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:04:28,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:28,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:04:28,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:04:28,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 145 [2024-11-08 16:04:28,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 125 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:28,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:28,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 145 [2024-11-08 16:04:28,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:29,238 INFO L124 PetriNetUnfolderBase]: 2771/6434 cut-off events. [2024-11-08 16:04:29,238 INFO L125 PetriNetUnfolderBase]: For 419/435 co-relation queries the response was YES. [2024-11-08 16:04:29,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11053 conditions, 6434 events. 2771/6434 cut-off events. For 419/435 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 53524 event pairs, 2538 based on Foata normal form. 2/5664 useless extension candidates. Maximal degree in co-relation 9822. Up to 4289 conditions per place. [2024-11-08 16:04:29,295 INFO L140 encePairwiseOnDemand]: 139/145 looper letters, 56 selfloop transitions, 3 changer transitions 0/128 dead transitions. [2024-11-08 16:04:29,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 128 transitions, 398 flow [2024-11-08 16:04:29,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:04:29,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:04:29,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2024-11-08 16:04:29,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6597701149425287 [2024-11-08 16:04:29,298 INFO L175 Difference]: Start difference. First operand has 122 places, 125 transitions, 274 flow. Second operand 3 states and 287 transitions. [2024-11-08 16:04:29,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 128 transitions, 398 flow [2024-11-08 16:04:29,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 128 transitions, 394 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:04:29,306 INFO L231 Difference]: Finished difference. Result has 123 places, 127 transitions, 293 flow [2024-11-08 16:04:29,307 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=123, PETRI_TRANSITIONS=127} [2024-11-08 16:04:29,308 INFO L277 CegarLoopForPetriNet]: 127 programPoint places, -4 predicate places. [2024-11-08 16:04:29,308 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 127 transitions, 293 flow [2024-11-08 16:04:29,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:29,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:29,309 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:29,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:04:29,309 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-08 16:04:29,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:29,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1990525821, now seen corresponding path program 1 times [2024-11-08 16:04:29,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:29,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075227084] [2024-11-08 16:04:29,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:29,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:29,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:29,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075227084] [2024-11-08 16:04:29,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075227084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:29,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:29,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:04:29,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671823307] [2024-11-08 16:04:29,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:29,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:04:29,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:29,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:04:29,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:04:29,664 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2024-11-08 16:04:29,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 127 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:29,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:29,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2024-11-08 16:04:29,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:31,149 INFO L124 PetriNetUnfolderBase]: 3898/9205 cut-off events. [2024-11-08 16:04:31,150 INFO L125 PetriNetUnfolderBase]: For 414/430 co-relation queries the response was YES. [2024-11-08 16:04:31,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15537 conditions, 9205 events. 3898/9205 cut-off events. For 414/430 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 83121 event pairs, 3053 based on Foata normal form. 208/8090 useless extension candidates. Maximal degree in co-relation 15469. Up to 5415 conditions per place. [2024-11-08 16:04:31,226 INFO L140 encePairwiseOnDemand]: 140/145 looper letters, 96 selfloop transitions, 4 changer transitions 0/170 dead transitions. [2024-11-08 16:04:31,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 170 transitions, 590 flow [2024-11-08 16:04:31,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:04:31,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:04:31,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2024-11-08 16:04:31,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7540229885057471 [2024-11-08 16:04:31,229 INFO L175 Difference]: Start difference. First operand has 123 places, 127 transitions, 293 flow. Second operand 3 states and 328 transitions. [2024-11-08 16:04:31,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 170 transitions, 590 flow [2024-11-08 16:04:31,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 170 transitions, 587 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:04:31,235 INFO L231 Difference]: Finished difference. Result has 125 places, 129 transitions, 314 flow [2024-11-08 16:04:31,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=125, PETRI_TRANSITIONS=129} [2024-11-08 16:04:31,236 INFO L277 CegarLoopForPetriNet]: 127 programPoint places, -2 predicate places. [2024-11-08 16:04:31,236 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 129 transitions, 314 flow [2024-11-08 16:04:31,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:31,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:31,237 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:31,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:04:31,238 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-08 16:04:31,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:31,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1990525820, now seen corresponding path program 1 times [2024-11-08 16:04:31,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:31,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459146507] [2024-11-08 16:04:31,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:31,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:31,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:31,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459146507] [2024-11-08 16:04:31,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459146507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:31,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:31,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:04:31,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390610945] [2024-11-08 16:04:31,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:31,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:04:31,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:31,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:04:31,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:04:31,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 145 [2024-11-08 16:04:31,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 129 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:31,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:31,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 145 [2024-11-08 16:04:31,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:32,702 INFO L124 PetriNetUnfolderBase]: 4501/9786 cut-off events. [2024-11-08 16:04:32,702 INFO L125 PetriNetUnfolderBase]: For 1722/1941 co-relation queries the response was YES. [2024-11-08 16:04:32,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18199 conditions, 9786 events. 4501/9786 cut-off events. For 1722/1941 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 83868 event pairs, 3017 based on Foata normal form. 412/9105 useless extension candidates. Maximal degree in co-relation 16995. Up to 5028 conditions per place. [2024-11-08 16:04:32,784 INFO L140 encePairwiseOnDemand]: 139/145 looper letters, 98 selfloop transitions, 6 changer transitions 0/173 dead transitions. [2024-11-08 16:04:32,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 173 transitions, 626 flow [2024-11-08 16:04:32,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:04:32,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:04:32,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2024-11-08 16:04:32,786 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7517241379310344 [2024-11-08 16:04:32,787 INFO L175 Difference]: Start difference. First operand has 125 places, 129 transitions, 314 flow. Second operand 3 states and 327 transitions. [2024-11-08 16:04:32,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 173 transitions, 626 flow [2024-11-08 16:04:32,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 173 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:04:32,793 INFO L231 Difference]: Finished difference. Result has 128 places, 133 transitions, 358 flow [2024-11-08 16:04:32,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=128, PETRI_TRANSITIONS=133} [2024-11-08 16:04:32,795 INFO L277 CegarLoopForPetriNet]: 127 programPoint places, 1 predicate places. [2024-11-08 16:04:32,795 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 133 transitions, 358 flow [2024-11-08 16:04:32,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:32,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:32,796 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:32,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:04:32,796 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-08 16:04:32,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:32,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1631891817, now seen corresponding path program 1 times [2024-11-08 16:04:32,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:32,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475145964] [2024-11-08 16:04:32,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:32,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:32,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:32,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:32,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475145964] [2024-11-08 16:04:32,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475145964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:04:32,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967772112] [2024-11-08 16:04:32,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:32,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:32,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:32,985 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:04:32,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:04:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:33,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 16:04:33,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:04:33,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 16:04:33,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:33,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:04:33,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:33,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967772112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:04:33,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:04:33,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-08 16:04:33,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428672242] [2024-11-08 16:04:33,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:04:33,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:04:33,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:33,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:04:33,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:04:33,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 145 [2024-11-08 16:04:33,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 133 transitions, 358 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:33,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:33,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 145 [2024-11-08 16:04:33,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:04:34,826 INFO L124 PetriNetUnfolderBase]: 2506/5873 cut-off events. [2024-11-08 16:04:34,826 INFO L125 PetriNetUnfolderBase]: For 2445/3205 co-relation queries the response was YES. [2024-11-08 16:04:34,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10940 conditions, 5873 events. 2506/5873 cut-off events. For 2445/3205 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 48738 event pairs, 1193 based on Foata normal form. 62/5206 useless extension candidates. Maximal degree in co-relation 9721. Up to 3817 conditions per place. [2024-11-08 16:04:34,870 INFO L140 encePairwiseOnDemand]: 138/145 looper letters, 68 selfloop transitions, 7 changer transitions 0/144 dead transitions. [2024-11-08 16:04:34,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 144 transitions, 530 flow [2024-11-08 16:04:34,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:04:34,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:04:34,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 520 transitions. [2024-11-08 16:04:34,873 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-11-08 16:04:34,873 INFO L175 Difference]: Start difference. First operand has 128 places, 133 transitions, 358 flow. Second operand 6 states and 520 transitions. [2024-11-08 16:04:34,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 144 transitions, 530 flow [2024-11-08 16:04:34,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 144 transitions, 516 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:04:34,877 INFO L231 Difference]: Finished difference. Result has 131 places, 131 transitions, 356 flow [2024-11-08 16:04:34,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=131, PETRI_TRANSITIONS=131} [2024-11-08 16:04:34,879 INFO L277 CegarLoopForPetriNet]: 127 programPoint places, 4 predicate places. [2024-11-08 16:04:34,879 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 131 transitions, 356 flow [2024-11-08 16:04:34,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:34,880 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:34,880 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:34,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:04:35,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1ce626-88f2-4ae1-9bc8-7d37199321d5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:04:35,081 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-08 16:04:35,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:35,083 INFO L85 PathProgramCache]: Analyzing trace with hash -950960518, now seen corresponding path program 1 times [2024-11-08 16:04:35,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:35,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123138187] [2024-11-08 16:04:35,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:35,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:04:35,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:04:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:04:35,168 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:04:35,168 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:04:35,170 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (64 of 65 remaining) [2024-11-08 16:04:35,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 65 remaining) [2024-11-08 16:04:35,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 65 remaining) [2024-11-08 16:04:35,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 65 remaining) [2024-11-08 16:04:35,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 65 remaining) [2024-11-08 16:04:35,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 65 remaining) [2024-11-08 16:04:35,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 65 remaining) [2024-11-08 16:04:35,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 65 remaining) [2024-11-08 16:04:35,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 65 remaining) [2024-11-08 16:04:35,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 65 remaining) [2024-11-08 16:04:35,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 65 remaining) [2024-11-08 16:04:35,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 65 remaining) [2024-11-08 16:04:35,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 65 remaining) [2024-11-08 16:04:35,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 65 remaining) [2024-11-08 16:04:35,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 65 remaining) [2024-11-08 16:04:35,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr14ASSERT_VIOLATIONMEMORY_LEAK (49 of 65 remaining) [2024-11-08 16:04:35,176 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 65 remaining) [2024-11-08 16:04:35,176 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 65 remaining) [2024-11-08 16:04:35,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 65 remaining) [2024-11-08 16:04:35,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 65 remaining) [2024-11-08 16:04:35,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 65 remaining) [2024-11-08 16:04:35,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 65 remaining) [2024-11-08 16:04:35,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 65 remaining) [2024-11-08 16:04:35,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 65 remaining) [2024-11-08 16:04:35,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 65 remaining) [2024-11-08 16:04:35,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 65 remaining) [2024-11-08 16:04:35,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (38 of 65 remaining) [2024-11-08 16:04:35,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 65 remaining) [2024-11-08 16:04:35,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 65 remaining) [2024-11-08 16:04:35,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 65 remaining) [2024-11-08 16:04:35,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 65 remaining) [2024-11-08 16:04:35,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 65 remaining) [2024-11-08 16:04:35,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 65 remaining) [2024-11-08 16:04:35,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 65 remaining) [2024-11-08 16:04:35,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 65 remaining) [2024-11-08 16:04:35,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 65 remaining) [2024-11-08 16:04:35,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 65 remaining) [2024-11-08 16:04:35,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 65 remaining) [2024-11-08 16:04:35,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 65 remaining) [2024-11-08 16:04:35,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 65 remaining) [2024-11-08 16:04:35,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 65 remaining) [2024-11-08 16:04:35,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 65 remaining) [2024-11-08 16:04:35,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 65 remaining) [2024-11-08 16:04:35,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 65 remaining) [2024-11-08 16:04:35,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 65 remaining) [2024-11-08 16:04:35,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 65 remaining) [2024-11-08 16:04:35,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 65 remaining) [2024-11-08 16:04:35,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 65 remaining) [2024-11-08 16:04:35,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 65 remaining) [2024-11-08 16:04:35,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 65 remaining) [2024-11-08 16:04:35,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 65 remaining) [2024-11-08 16:04:35,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 65 remaining) [2024-11-08 16:04:35,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 65 remaining) [2024-11-08 16:04:35,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 65 remaining) [2024-11-08 16:04:35,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr14ASSERT_VIOLATIONMEMORY_LEAK (10 of 65 remaining) [2024-11-08 16:04:35,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 65 remaining) [2024-11-08 16:04:35,191 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 65 remaining) [2024-11-08 16:04:35,191 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 65 remaining) [2024-11-08 16:04:35,191 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 65 remaining) [2024-11-08 16:04:35,191 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 65 remaining) [2024-11-08 16:04:35,191 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 65 remaining) [2024-11-08 16:04:35,192 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 65 remaining) [2024-11-08 16:04:35,192 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 65 remaining) [2024-11-08 16:04:35,192 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 65 remaining) [2024-11-08 16:04:35,192 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 65 remaining) [2024-11-08 16:04:35,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 16:04:35,193 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:35,195 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 16:04:35,196 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-08 16:04:35,294 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-08 16:04:35,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 243 transitions, 530 flow [2024-11-08 16:04:35,453 INFO L124 PetriNetUnfolderBase]: 191/977 cut-off events. [2024-11-08 16:04:35,454 INFO L125 PetriNetUnfolderBase]: For 72/83 co-relation queries the response was YES. [2024-11-08 16:04:35,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 977 events. 191/977 cut-off events. For 72/83 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6686 event pairs, 2 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 605. Up to 32 conditions per place. [2024-11-08 16:04:35,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 243 transitions, 530 flow [2024-11-08 16:04:35,481 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 243 transitions, 530 flow [2024-11-08 16:04:35,482 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:04:35,483 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;@3622e054, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:04:35,484 INFO L334 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2024-11-08 16:04:35,486 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:04:35,486 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-08 16:04:35,486 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:04:35,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:04:35,486 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-08 16:04:35,486 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 87 more)] === [2024-11-08 16:04:35,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:35,487 INFO L85 PathProgramCache]: Analyzing trace with hash 26711, now seen corresponding path program 1 times [2024-11-08 16:04:35,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:35,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279861253] [2024-11-08 16:04:35,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:35,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:04:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:04:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:04:35,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:04:35,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279861253] [2024-11-08 16:04:35,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279861253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:04:35,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:04:35,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:04:35,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357479437] [2024-11-08 16:04:35,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:04:35,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:04:35,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:04:35,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:04:35,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:04:35,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 243 [2024-11-08 16:04:35,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 243 transitions, 530 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:04:35,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:04:35,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 243 [2024-11-08 16:04:35,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand