./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU --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 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:58:16,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:58:16,493 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 21:58:16,499 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:58:16,500 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:58:16,534 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:58:16,535 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:58:16,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:58:16,536 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:58:16,538 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:58:16,538 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:58:16,539 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:58:16,540 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:58:16,542 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:58:16,543 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:58:16,543 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:58:16,544 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:58:16,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:58:16,544 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:58:16,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:58:16,548 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 21:58:16,549 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 21:58:16,549 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 21:58:16,549 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:58:16,550 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 21:58:16,550 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:58:16,551 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 21:58:16,551 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:58:16,551 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:58:16,552 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:58:16,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:58:16,552 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:58:16,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:58:16,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:58:16,554 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:58:16,554 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:58:16,555 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:58:16,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:58:16,555 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:58:16,556 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:58:16,556 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:58:16,557 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:58:16,557 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_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 [2024-10-31 21:58:16,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:58:16,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:58:16,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:58:16,912 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:58:16,913 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:58:16,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i Unable to find full path for "g++" [2024-10-31 21:58:19,126 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:58:19,404 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:58:19,404 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2024-10-31 21:58:19,425 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU/data/3055efbeb/f02bd3796d1a4fed8de9b13c3525943c/FLAG1788aed0a [2024-10-31 21:58:19,713 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU/data/3055efbeb/f02bd3796d1a4fed8de9b13c3525943c [2024-10-31 21:58:19,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:58:19,718 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:58:19,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:58:19,720 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:58:19,727 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:58:19,728 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:58:19" (1/1) ... [2024-10-31 21:58:19,730 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3521dddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:19, skipping insertion in model container [2024-10-31 21:58:19,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:58:19" (1/1) ... [2024-10-31 21:58:19,802 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:58:20,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:58:20,311 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:58:20,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:58:20,468 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:58:20,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:20 WrapperNode [2024-10-31 21:58:20,469 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:58:20,470 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:58:20,470 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:58:20,470 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:58:20,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:20" (1/1) ... [2024-10-31 21:58:20,507 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:20" (1/1) ... [2024-10-31 21:58:20,543 INFO L138 Inliner]: procedures = 171, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2024-10-31 21:58:20,546 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:58:20,547 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:58:20,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:58:20,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:58:20,560 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:20" (1/1) ... [2024-10-31 21:58:20,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:20" (1/1) ... [2024-10-31 21:58:20,564 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:20" (1/1) ... [2024-10-31 21:58:20,588 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [2, 5, 6, 5, 2]. 30 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 1, 5, 0]. The 3 writes are split as follows [0, 0, 2, 0, 1]. [2024-10-31 21:58:20,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:20" (1/1) ... [2024-10-31 21:58:20,589 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:20" (1/1) ... [2024-10-31 21:58:20,606 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:20" (1/1) ... [2024-10-31 21:58:20,614 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:20" (1/1) ... [2024-10-31 21:58:20,618 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:20" (1/1) ... [2024-10-31 21:58:20,623 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:20" (1/1) ... [2024-10-31 21:58:20,630 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:58:20,631 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:58:20,632 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:58:20,632 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:58:20,633 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:20" (1/1) ... [2024-10-31 21:58:20,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:58:20,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:20,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:20,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:58:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 21:58:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 21:58:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 21:58:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-31 21:58:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-31 21:58:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 21:58:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 21:58:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 21:58:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-31 21:58:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-31 21:58:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 21:58:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:58:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 21:58:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-31 21:58:20,719 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-31 21:58:20,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 21:58:20,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:58:20,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 21:58:20,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 21:58:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 21:58:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-31 21:58:20,722 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 21:58:20,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:58:20,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:58:20,725 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 21:58:20,906 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:58:20,909 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:58:21,389 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 21:58:21,391 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:58:21,628 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:58:21,628 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-31 21:58:21,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:58:21 BoogieIcfgContainer [2024-10-31 21:58:21,629 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:58:21,632 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:58:21,632 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:58:21,636 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:58:21,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:58:19" (1/3) ... [2024-10-31 21:58:21,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610d9ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:58:21, skipping insertion in model container [2024-10-31 21:58:21,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:20" (2/3) ... [2024-10-31 21:58:21,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610d9ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:58:21, skipping insertion in model container [2024-10-31 21:58:21,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:58:21" (3/3) ... [2024-10-31 21:58:21,642 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2024-10-31 21:58:21,660 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:58:21,660 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-31 21:58:21,661 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 21:58:21,720 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-31 21:58:21,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 72 transitions, 151 flow [2024-10-31 21:58:21,805 INFO L124 PetriNetUnfolderBase]: 15/103 cut-off events. [2024-10-31 21:58:21,806 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 21:58:21,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 103 events. 15/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 423 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 67. Up to 4 conditions per place. [2024-10-31 21:58:21,811 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 72 transitions, 151 flow [2024-10-31 21:58:21,816 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 72 transitions, 151 flow [2024-10-31 21:58:21,826 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:58:21,834 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;@3ae7ccf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:58:21,835 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-10-31 21:58:21,840 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:58:21,840 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 21:58:21,840 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 21:58:21,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:21,841 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 21:58:21,842 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-31 21:58:21,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:21,848 INFO L85 PathProgramCache]: Analyzing trace with hash 347965, now seen corresponding path program 1 times [2024-10-31 21:58:21,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:21,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508062160] [2024-10-31 21:58:21,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:21,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:22,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:22,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508062160] [2024-10-31 21:58:22,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508062160] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:22,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:22,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 21:58:22,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044206347] [2024-10-31 21:58:22,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:22,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:58:22,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:22,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:58:22,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:58:22,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 72 [2024-10-31 21:58:22,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 72 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:22,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:22,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 72 [2024-10-31 21:58:22,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:22,688 INFO L124 PetriNetUnfolderBase]: 133/497 cut-off events. [2024-10-31 21:58:22,688 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 21:58:22,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 497 events. 133/497 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2802 event pairs, 110 based on Foata normal form. 90/537 useless extension candidates. Maximal degree in co-relation 752. Up to 254 conditions per place. [2024-10-31 21:58:22,697 INFO L140 encePairwiseOnDemand]: 58/72 looper letters, 36 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-10-31 21:58:22,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 223 flow [2024-10-31 21:58:22,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:58:22,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:58:22,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-10-31 21:58:22,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-10-31 21:58:22,719 INFO L175 Difference]: Start difference. First operand has 64 places, 72 transitions, 151 flow. Second operand 3 states and 152 transitions. [2024-10-31 21:58:22,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 223 flow [2024-10-31 21:58:22,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 223 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 21:58:22,735 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 129 flow [2024-10-31 21:58:22,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-10-31 21:58:22,742 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -1 predicate places. [2024-10-31 21:58:22,742 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 129 flow [2024-10-31 21:58:22,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:22,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:22,743 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 21:58:22,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:58:22,744 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-31 21:58:22,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:22,745 INFO L85 PathProgramCache]: Analyzing trace with hash 347966, now seen corresponding path program 1 times [2024-10-31 21:58:22,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:22,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774737901] [2024-10-31 21:58:22,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:22,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:22,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:22,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774737901] [2024-10-31 21:58:22,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774737901] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:22,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:22,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 21:58:22,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457220858] [2024-10-31 21:58:22,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:22,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:58:22,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:22,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:58:22,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:58:23,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2024-10-31 21:58:23,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:23,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:23,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2024-10-31 21:58:23,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:23,261 INFO L124 PetriNetUnfolderBase]: 121/474 cut-off events. [2024-10-31 21:58:23,261 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-31 21:58:23,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 474 events. 121/474 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2752 event pairs, 0 based on Foata normal form. 1/426 useless extension candidates. Maximal degree in co-relation 726. Up to 258 conditions per place. [2024-10-31 21:58:23,269 INFO L140 encePairwiseOnDemand]: 68/72 looper letters, 36 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-10-31 21:58:23,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 71 transitions, 229 flow [2024-10-31 21:58:23,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:58:23,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:58:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-10-31 21:58:23,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6712962962962963 [2024-10-31 21:58:23,273 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 129 flow. Second operand 3 states and 145 transitions. [2024-10-31 21:58:23,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 71 transitions, 229 flow [2024-10-31 21:58:23,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 71 transitions, 225 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 21:58:23,282 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 135 flow [2024-10-31 21:58:23,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-10-31 21:58:23,283 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2024-10-31 21:58:23,283 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 135 flow [2024-10-31 21:58:23,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:23,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:23,285 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-31 21:58:23,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:58:23,286 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-31 21:58:23,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:23,287 INFO L85 PathProgramCache]: Analyzing trace with hash -758423400, now seen corresponding path program 1 times [2024-10-31 21:58:23,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:23,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191467541] [2024-10-31 21:58:23,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:23,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:23,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:23,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191467541] [2024-10-31 21:58:23,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191467541] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:23,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:23,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:58:23,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188141296] [2024-10-31 21:58:23,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:23,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:23,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:23,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:23,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:23,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 72 [2024-10-31 21:58:23,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:23,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:23,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 72 [2024-10-31 21:58:23,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:23,884 INFO L124 PetriNetUnfolderBase]: 121/473 cut-off events. [2024-10-31 21:58:23,884 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-10-31 21:58:23,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 473 events. 121/473 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2612 event pairs, 79 based on Foata normal form. 12/439 useless extension candidates. Maximal degree in co-relation 758. Up to 189 conditions per place. [2024-10-31 21:58:23,888 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 57 selfloop transitions, 4 changer transitions 0/93 dead transitions. [2024-10-31 21:58:23,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 93 transitions, 323 flow [2024-10-31 21:58:23,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:23,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:58:23,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 232 transitions. [2024-10-31 21:58:23,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-10-31 21:58:23,892 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 135 flow. Second operand 5 states and 232 transitions. [2024-10-31 21:58:23,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 93 transitions, 323 flow [2024-10-31 21:58:23,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 93 transitions, 319 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 21:58:23,899 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 142 flow [2024-10-31 21:58:23,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-10-31 21:58:23,902 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 2 predicate places. [2024-10-31 21:58:23,902 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 142 flow [2024-10-31 21:58:23,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:23,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:23,903 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-10-31 21:58:23,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:58:23,903 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-10-31 21:58:23,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:23,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2036288589, now seen corresponding path program 1 times [2024-10-31 21:58:23,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:23,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661787490] [2024-10-31 21:58:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:23,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:23,939 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:58:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:23,977 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:58:23,978 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 21:58:23,979 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-10-31 21:58:23,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 25 remaining) [2024-10-31 21:58:23,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 25 remaining) [2024-10-31 21:58:23,983 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 25 remaining) [2024-10-31 21:58:23,983 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 25 remaining) [2024-10-31 21:58:23,983 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 25 remaining) [2024-10-31 21:58:23,984 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 25 remaining) [2024-10-31 21:58:23,984 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (17 of 25 remaining) [2024-10-31 21:58:23,984 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (16 of 25 remaining) [2024-10-31 21:58:23,985 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 25 remaining) [2024-10-31 21:58:23,985 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 25 remaining) [2024-10-31 21:58:23,985 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 25 remaining) [2024-10-31 21:58:23,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 25 remaining) [2024-10-31 21:58:23,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 25 remaining) [2024-10-31 21:58:23,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 25 remaining) [2024-10-31 21:58:23,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 25 remaining) [2024-10-31 21:58:23,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 25 remaining) [2024-10-31 21:58:23,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 25 remaining) [2024-10-31 21:58:23,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 25 remaining) [2024-10-31 21:58:23,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 25 remaining) [2024-10-31 21:58:23,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 25 remaining) [2024-10-31 21:58:23,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 25 remaining) [2024-10-31 21:58:23,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 25 remaining) [2024-10-31 21:58:23,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 25 remaining) [2024-10-31 21:58:23,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 25 remaining) [2024-10-31 21:58:23,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 21:58:23,991 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-31 21:58:23,994 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 21:58:23,995 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 21:58:24,032 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 21:58:24,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 109 transitions, 234 flow [2024-10-31 21:58:24,066 INFO L124 PetriNetUnfolderBase]: 27/183 cut-off events. [2024-10-31 21:58:24,066 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-31 21:58:24,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 183 events. 27/183 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 871 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 112. Up to 6 conditions per place. [2024-10-31 21:58:24,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 109 transitions, 234 flow [2024-10-31 21:58:24,083 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 109 transitions, 234 flow [2024-10-31 21:58:24,085 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:58:24,086 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;@3ae7ccf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:58:24,086 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-10-31 21:58:24,089 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:58:24,089 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 21:58:24,089 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 21:58:24,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:24,089 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 21:58:24,090 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-31 21:58:24,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:24,090 INFO L85 PathProgramCache]: Analyzing trace with hash 456202, now seen corresponding path program 1 times [2024-10-31 21:58:24,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:24,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392438203] [2024-10-31 21:58:24,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:24,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:24,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:24,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392438203] [2024-10-31 21:58:24,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392438203] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:24,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:24,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 21:58:24,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840974444] [2024-10-31 21:58:24,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:24,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:58:24,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:24,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:58:24,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:58:24,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 109 [2024-10-31 21:58:24,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 109 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:24,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:24,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 109 [2024-10-31 21:58:24,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:25,649 INFO L124 PetriNetUnfolderBase]: 3527/7826 cut-off events. [2024-10-31 21:58:25,650 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-10-31 21:58:25,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13542 conditions, 7826 events. 3527/7826 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 66488 event pairs, 2933 based on Foata normal form. 1771/8977 useless extension candidates. Maximal degree in co-relation 9327. Up to 4730 conditions per place. [2024-10-31 21:58:25,728 INFO L140 encePairwiseOnDemand]: 89/109 looper letters, 60 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2024-10-31 21:58:25,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 112 transitions, 364 flow [2024-10-31 21:58:25,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:58:25,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:58:25,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-10-31 21:58:25,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7400611620795107 [2024-10-31 21:58:25,735 INFO L175 Difference]: Start difference. First operand has 96 places, 109 transitions, 234 flow. Second operand 3 states and 242 transitions. [2024-10-31 21:58:25,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 112 transitions, 364 flow [2024-10-31 21:58:25,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 112 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 21:58:25,744 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 200 flow [2024-10-31 21:58:25,745 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2024-10-31 21:58:25,746 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, -1 predicate places. [2024-10-31 21:58:25,747 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 200 flow [2024-10-31 21:58:25,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:25,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:25,748 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 21:58:25,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 21:58:25,748 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-31 21:58:25,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:25,749 INFO L85 PathProgramCache]: Analyzing trace with hash 456203, now seen corresponding path program 1 times [2024-10-31 21:58:25,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:25,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138540017] [2024-10-31 21:58:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:25,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:25,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:25,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138540017] [2024-10-31 21:58:25,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138540017] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:25,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:25,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 21:58:25,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463230388] [2024-10-31 21:58:25,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:25,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:58:25,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:25,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:58:25,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:58:26,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 109 [2024-10-31 21:58:26,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2024-10-31 21:58:26,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:26,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 109 [2024-10-31 21:58:26,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:27,275 INFO L124 PetriNetUnfolderBase]: 3226/7683 cut-off events. [2024-10-31 21:58:27,275 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2024-10-31 21:58:27,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13091 conditions, 7683 events. 3226/7683 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 68139 event pairs, 1496 based on Foata normal form. 1/6976 useless extension candidates. Maximal degree in co-relation 10781. Up to 5156 conditions per place. [2024-10-31 21:58:27,418 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 50 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2024-10-31 21:58:27,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 104 transitions, 334 flow [2024-10-31 21:58:27,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:58:27,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:58:27,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2024-10-31 21:58:27,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6513761467889908 [2024-10-31 21:58:27,420 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 200 flow. Second operand 3 states and 213 transitions. [2024-10-31 21:58:27,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 104 transitions, 334 flow [2024-10-31 21:58:27,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 104 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 21:58:27,438 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 215 flow [2024-10-31 21:58:27,439 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2024-10-31 21:58:27,440 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 0 predicate places. [2024-10-31 21:58:27,441 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 215 flow [2024-10-31 21:58:27,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2024-10-31 21:58:27,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:27,442 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 21:58:27,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 21:58:27,443 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-31 21:58:27,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:27,444 INFO L85 PathProgramCache]: Analyzing trace with hash 438445138, now seen corresponding path program 1 times [2024-10-31 21:58:27,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:27,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429234022] [2024-10-31 21:58:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:27,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:27,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:27,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429234022] [2024-10-31 21:58:27,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429234022] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:27,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:27,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:58:27,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663164445] [2024-10-31 21:58:27,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:27,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:58:27,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:27,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:58:27,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:58:27,515 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2024-10-31 21:58:27,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 215 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2024-10-31 21:58:27,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:27,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2024-10-31 21:58:27,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:29,024 INFO L124 PetriNetUnfolderBase]: 2958/6770 cut-off events. [2024-10-31 21:58:29,025 INFO L125 PetriNetUnfolderBase]: For 379/379 co-relation queries the response was YES. [2024-10-31 21:58:29,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11931 conditions, 6770 events. 2958/6770 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 56683 event pairs, 2933 based on Foata normal form. 1/6287 useless extension candidates. Maximal degree in co-relation 11828. Up to 4735 conditions per place. [2024-10-31 21:58:29,074 INFO L140 encePairwiseOnDemand]: 106/109 looper letters, 49 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2024-10-31 21:58:29,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 103 transitions, 336 flow [2024-10-31 21:58:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:58:29,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:58:29,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2024-10-31 21:58:29,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.654434250764526 [2024-10-31 21:58:29,077 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 215 flow. Second operand 3 states and 214 transitions. [2024-10-31 21:58:29,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 103 transitions, 336 flow [2024-10-31 21:58:29,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 103 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:58:29,081 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 212 flow [2024-10-31 21:58:29,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2024-10-31 21:58:29,082 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 1 predicate places. [2024-10-31 21:58:29,083 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 212 flow [2024-10-31 21:58:29,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2024-10-31 21:58:29,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:29,084 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-31 21:58:29,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 21:58:29,084 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-31 21:58:29,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:29,085 INFO L85 PathProgramCache]: Analyzing trace with hash 420869410, now seen corresponding path program 1 times [2024-10-31 21:58:29,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:29,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586762625] [2024-10-31 21:58:29,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:29,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:29,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:29,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:29,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586762625] [2024-10-31 21:58:29,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586762625] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:29,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503063407] [2024-10-31 21:58:29,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:29,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:29,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:29,235 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:29,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 21:58:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:29,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 21:58:29,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:29,444 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 [2024-10-31 21:58:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:29,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:29,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503063407] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:29,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:29,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-10-31 21:58:29,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012837562] [2024-10-31 21:58:29,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:29,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 21:58:29,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:29,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 21:58:29,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-31 21:58:29,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 109 [2024-10-31 21:58:29,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 212 flow. Second operand has 8 states, 8 states have (on average 54.625) internal successors, (437), 8 states have internal predecessors, (437), 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) [2024-10-31 21:58:29,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:29,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 109 [2024-10-31 21:58:29,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:31,359 INFO L124 PetriNetUnfolderBase]: 3158/7711 cut-off events. [2024-10-31 21:58:31,359 INFO L125 PetriNetUnfolderBase]: For 520/520 co-relation queries the response was YES. [2024-10-31 21:58:31,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13132 conditions, 7711 events. 3158/7711 cut-off events. For 520/520 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 69590 event pairs, 241 based on Foata normal form. 168/7366 useless extension candidates. Maximal degree in co-relation 1092. Up to 3454 conditions per place. [2024-10-31 21:58:31,424 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 95 selfloop transitions, 4 changer transitions 0/149 dead transitions. [2024-10-31 21:58:31,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 149 transitions, 524 flow [2024-10-31 21:58:31,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:31,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:58:31,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 362 transitions. [2024-10-31 21:58:31,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6642201834862386 [2024-10-31 21:58:31,428 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 212 flow. Second operand 5 states and 362 transitions. [2024-10-31 21:58:31,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 149 transitions, 524 flow [2024-10-31 21:58:31,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 149 transitions, 520 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 21:58:31,435 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 212 flow [2024-10-31 21:58:31,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2024-10-31 21:58:31,438 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2024-10-31 21:58:31,439 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 212 flow [2024-10-31 21:58:31,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 54.625) internal successors, (437), 8 states have internal predecessors, (437), 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) [2024-10-31 21:58:31,440 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:31,440 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:31,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 21:58:31,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5264e582-4812-42f8-a58d-75b624386874/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:31,645 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-31 21:58:31,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:31,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1684431573, now seen corresponding path program 1 times [2024-10-31 21:58:31,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:31,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862682289] [2024-10-31 21:58:31,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:31,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:31,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:31,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:31,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862682289] [2024-10-31 21:58:31,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862682289] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:31,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:31,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:58:31,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736151138] [2024-10-31 21:58:31,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:31,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:58:31,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:31,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:58:31,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:58:31,992 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 109 [2024-10-31 21:58:31,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:31,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:31,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 109 [2024-10-31 21:58:31,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:32,899 INFO L124 PetriNetUnfolderBase]: 2883/6291 cut-off events. [2024-10-31 21:58:32,900 INFO L125 PetriNetUnfolderBase]: For 927/927 co-relation queries the response was YES. [2024-10-31 21:58:32,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11568 conditions, 6291 events. 2883/6291 cut-off events. For 927/927 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 50302 event pairs, 2883 based on Foata normal form. 0/6052 useless extension candidates. Maximal degree in co-relation 8227. Up to 4605 conditions per place. [2024-10-31 21:58:32,953 INFO L140 encePairwiseOnDemand]: 100/109 looper letters, 38 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2024-10-31 21:58:32,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 274 flow [2024-10-31 21:58:33,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:58:33,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:58:33,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2024-10-31 21:58:33,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5626911314984709 [2024-10-31 21:58:33,088 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 212 flow. Second operand 3 states and 184 transitions. [2024-10-31 21:58:33,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 82 transitions, 274 flow [2024-10-31 21:58:33,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 82 transitions, 264 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-31 21:58:33,098 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 188 flow [2024-10-31 21:58:33,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-10-31 21:58:33,101 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, -7 predicate places. [2024-10-31 21:58:33,105 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 188 flow [2024-10-31 21:58:33,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:33,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:33,106 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:33,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 21:58:33,106 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-31 21:58:33,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:33,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1684431574, now seen corresponding path program 1 times [2024-10-31 21:58:33,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:33,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328184297] [2024-10-31 21:58:33,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:33,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:33,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:33,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328184297] [2024-10-31 21:58:33,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328184297] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:33,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:33,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:58:33,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645462736] [2024-10-31 21:58:33,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:33,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:33,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:33,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:33,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:33,457 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 109 [2024-10-31 21:58:33,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 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) [2024-10-31 21:58:33,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:33,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 109 [2024-10-31 21:58:33,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:35,001 INFO L124 PetriNetUnfolderBase]: 4199/8785 cut-off events. [2024-10-31 21:58:35,002 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2024-10-31 21:58:35,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15949 conditions, 8785 events. 4199/8785 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 71802 event pairs, 3024 based on Foata normal form. 0/8322 useless extension candidates. Maximal degree in co-relation 15940. Up to 4582 conditions per place. [2024-10-31 21:58:35,064 INFO L140 encePairwiseOnDemand]: 91/109 looper letters, 84 selfloop transitions, 10 changer transitions 0/127 dead transitions. [2024-10-31 21:58:35,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 127 transitions, 466 flow [2024-10-31 21:58:35,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:35,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:35,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 285 transitions. [2024-10-31 21:58:35,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6536697247706422 [2024-10-31 21:58:35,067 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 188 flow. Second operand 4 states and 285 transitions. [2024-10-31 21:58:35,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 127 transitions, 466 flow [2024-10-31 21:58:35,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 127 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:58:35,072 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 291 flow [2024-10-31 21:58:35,073 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2024-10-31 21:58:35,073 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, -2 predicate places. [2024-10-31 21:58:35,074 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 291 flow [2024-10-31 21:58:35,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 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) [2024-10-31 21:58:35,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:35,075 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-10-31 21:58:35,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 21:58:35,075 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-31 21:58:35,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:35,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1267818557, now seen corresponding path program 1 times [2024-10-31 21:58:35,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:35,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319632591] [2024-10-31 21:58:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:35,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:35,101 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:58:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:35,123 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:58:35,124 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 21:58:35,124 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2024-10-31 21:58:35,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 33 remaining) [2024-10-31 21:58:35,125 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 33 remaining) [2024-10-31 21:58:35,125 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 33 remaining) [2024-10-31 21:58:35,125 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 33 remaining) [2024-10-31 21:58:35,125 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 33 remaining) [2024-10-31 21:58:35,126 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 33 remaining) [2024-10-31 21:58:35,126 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (25 of 33 remaining) [2024-10-31 21:58:35,126 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (24 of 33 remaining) [2024-10-31 21:58:35,126 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 33 remaining) [2024-10-31 21:58:35,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 33 remaining) [2024-10-31 21:58:35,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 33 remaining) [2024-10-31 21:58:35,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 33 remaining) [2024-10-31 21:58:35,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 33 remaining) [2024-10-31 21:58:35,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 33 remaining) [2024-10-31 21:58:35,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 33 remaining) [2024-10-31 21:58:35,128 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 33 remaining) [2024-10-31 21:58:35,129 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 33 remaining) [2024-10-31 21:58:35,129 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 33 remaining) [2024-10-31 21:58:35,129 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 33 remaining) [2024-10-31 21:58:35,129 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 33 remaining) [2024-10-31 21:58:35,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 33 remaining) [2024-10-31 21:58:35,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 33 remaining) [2024-10-31 21:58:35,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 33 remaining) [2024-10-31 21:58:35,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 33 remaining) [2024-10-31 21:58:35,131 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 33 remaining) [2024-10-31 21:58:35,131 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 33 remaining) [2024-10-31 21:58:35,131 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 33 remaining) [2024-10-31 21:58:35,132 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 33 remaining) [2024-10-31 21:58:35,132 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 33 remaining) [2024-10-31 21:58:35,132 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 33 remaining) [2024-10-31 21:58:35,132 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 33 remaining) [2024-10-31 21:58:35,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 33 remaining) [2024-10-31 21:58:35,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 21:58:35,133 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:35,134 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 21:58:35,134 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-31 21:58:35,182 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 21:58:35,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 146 transitions, 319 flow [2024-10-31 21:58:35,236 INFO L124 PetriNetUnfolderBase]: 42/284 cut-off events. [2024-10-31 21:58:35,236 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-31 21:58:35,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 284 events. 42/284 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1457 event pairs, 1 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 194. Up to 12 conditions per place. [2024-10-31 21:58:35,239 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 146 transitions, 319 flow [2024-10-31 21:58:35,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 146 transitions, 319 flow [2024-10-31 21:58:35,246 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:58:35,247 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;@3ae7ccf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:58:35,247 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-10-31 21:58:35,250 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:58:35,250 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 21:58:35,250 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 21:58:35,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:35,251 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 21:58:35,251 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2024-10-31 21:58:35,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:35,252 INFO L85 PathProgramCache]: Analyzing trace with hash 601180, now seen corresponding path program 1 times [2024-10-31 21:58:35,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:35,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88207739] [2024-10-31 21:58:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:35,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:35,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:35,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88207739] [2024-10-31 21:58:35,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88207739] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:35,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:35,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 21:58:35,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286968997] [2024-10-31 21:58:35,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:35,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:58:35,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:35,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:58:35,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:58:35,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 146 [2024-10-31 21:58:35,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 146 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2024-10-31 21:58:35,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:35,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 146 [2024-10-31 21:58:35,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand