./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce37da4bed964b4727d03a98278bc58de76d7006f2d65a8a42fb0f55b5b34a9c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:35:19,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:35:19,721 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 16:35:19,735 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:35:19,736 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:35:19,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:35:19,776 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:35:19,777 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:35:19,778 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:35:19,779 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:35:19,780 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:35:19,781 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:35:19,782 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:35:19,782 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:35:19,786 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:35:19,786 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:35:19,787 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:35:19,787 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:35:19,788 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:35:19,788 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:35:19,788 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 16:35:19,793 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 16:35:19,793 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 16:35:19,794 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:35:19,794 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 16:35:19,794 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:35:19,795 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:35:19,795 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:35:19,796 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:35:19,796 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:35:19,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:35:19,800 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:35:19,801 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:35:19,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:35:19,801 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:35:19,802 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:35:19,802 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:35:19,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:35:19,803 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:35:19,803 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:35:19,805 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:35:19,805 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:35:19,806 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_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce37da4bed964b4727d03a98278bc58de76d7006f2d65a8a42fb0f55b5b34a9c [2024-11-08 16:35:20,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:35:20,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:35:20,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:35:20,194 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:35:20,195 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:35:20,197 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i Unable to find full path for "g++" [2024-11-08 16:35:22,793 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:35:23,145 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:35:23,146 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2024-11-08 16:35:23,172 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/data/8a83d0ba0/b54470e589374b1f9448b7c89badb95f/FLAG805178ccf [2024-11-08 16:35:23,191 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/data/8a83d0ba0/b54470e589374b1f9448b7c89badb95f [2024-11-08 16:35:23,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:35:23,196 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:35:23,197 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:35:23,197 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:35:23,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:35:23,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:35:23" (1/1) ... [2024-11-08 16:35:23,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec8c167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:23, skipping insertion in model container [2024-11-08 16:35:23,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:35:23" (1/1) ... [2024-11-08 16:35:23,269 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:35:24,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:35:24,153 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:35:24,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:35:24,383 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:35:24,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:24 WrapperNode [2024-11-08 16:35:24,384 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:35:24,386 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:35:24,386 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:35:24,387 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:35:24,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:24" (1/1) ... [2024-11-08 16:35:24,429 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:24" (1/1) ... [2024-11-08 16:35:24,485 INFO L138 Inliner]: procedures = 252, calls = 53, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 166 [2024-11-08 16:35:24,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:35:24,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:35:24,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:35:24,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:35:24,503 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:24" (1/1) ... [2024-11-08 16:35:24,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:24" (1/1) ... [2024-11-08 16:35:24,514 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:24" (1/1) ... [2024-11-08 16:35:24,550 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 2, 5]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 0, 5]. The 1 writes are split as follows [0, 0, 0, 1, 0]. [2024-11-08 16:35:24,553 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:24" (1/1) ... [2024-11-08 16:35:24,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:24" (1/1) ... [2024-11-08 16:35:24,569 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:24" (1/1) ... [2024-11-08 16:35:24,579 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:24" (1/1) ... [2024-11-08 16:35:24,581 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:24" (1/1) ... [2024-11-08 16:35:24,583 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:24" (1/1) ... [2024-11-08 16:35:24,587 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:35:24,588 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:35:24,589 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:35:24,589 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:35:24,590 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:24" (1/1) ... [2024-11-08 16:35:24,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:35:24,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:24,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:35:24,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:35:24,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 16:35:24,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 16:35:24,693 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 16:35:24,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:35:24,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:35:24,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 16:35:24,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 16:35:24,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-08 16:35:24,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:35:24,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:35:24,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 16:35:24,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 16:35:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-08 16:35:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 16:35:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:35:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-08 16:35:24,699 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-08 16:35:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:35:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:35:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 16:35:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 16:35:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-08 16:35:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:35:24,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:35:24,704 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 16:35:24,915 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:35:24,917 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:35:25,351 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:35:25,352 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:35:25,655 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:35:25,656 INFO L316 CfgBuilder]: Removed 14 assume(true) statements. [2024-11-08 16:35:25,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:35:25 BoogieIcfgContainer [2024-11-08 16:35:25,657 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:35:25,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:35:25,660 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:35:25,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:35:25,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:35:23" (1/3) ... [2024-11-08 16:35:25,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b2314b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:35:25, skipping insertion in model container [2024-11-08 16:35:25,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:24" (2/3) ... [2024-11-08 16:35:25,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b2314b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:35:25, skipping insertion in model container [2024-11-08 16:35:25,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:35:25" (3/3) ... [2024-11-08 16:35:25,671 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2024-11-08 16:35:25,695 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:35:25,695 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-08 16:35:25,696 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:35:25,773 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-08 16:35:25,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 96 transitions, 199 flow [2024-11-08 16:35:25,952 INFO L124 PetriNetUnfolderBase]: 26/137 cut-off events. [2024-11-08 16:35:25,952 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 16:35:25,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 137 events. 26/137 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 495 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2024-11-08 16:35:25,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 96 transitions, 199 flow [2024-11-08 16:35:25,965 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 96 transitions, 199 flow [2024-11-08 16:35:25,977 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:35:25,988 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;@3c529ea1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:35:25,989 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-08 16:35:25,999 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:35:26,000 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-11-08 16:35:26,000 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:35:26,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:26,002 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 16:35:26,002 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-08 16:35:26,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:26,009 INFO L85 PathProgramCache]: Analyzing trace with hash 14359979, now seen corresponding path program 1 times [2024-11-08 16:35:26,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:26,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745675736] [2024-11-08 16:35:26,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:26,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:26,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:26,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745675736] [2024-11-08 16:35:26,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745675736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:26,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:26,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:35:26,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940617535] [2024-11-08 16:35:26,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:26,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:35:26,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:26,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:35:26,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:35:26,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 96 [2024-11-08 16:35:26,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 96 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:26,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:26,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 96 [2024-11-08 16:35:26,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:27,131 INFO L124 PetriNetUnfolderBase]: 414/1211 cut-off events. [2024-11-08 16:35:27,131 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 16:35:27,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2045 conditions, 1211 events. 414/1211 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7612 event pairs, 331 based on Foata normal form. 213/1352 useless extension candidates. Maximal degree in co-relation 1980. Up to 731 conditions per place. [2024-11-08 16:35:27,153 INFO L140 encePairwiseOnDemand]: 76/96 looper letters, 64 selfloop transitions, 2 changer transitions 1/100 dead transitions. [2024-11-08 16:35:27,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 100 transitions, 341 flow [2024-11-08 16:35:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:35:27,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:35:27,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2024-11-08 16:35:27,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6805555555555556 [2024-11-08 16:35:27,177 INFO L175 Difference]: Start difference. First operand has 79 places, 96 transitions, 199 flow. Second operand 3 states and 196 transitions. [2024-11-08 16:35:27,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 100 transitions, 341 flow [2024-11-08 16:35:27,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 100 transitions, 341 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:35:27,190 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 163 flow [2024-11-08 16:35:27,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2024-11-08 16:35:27,200 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -1 predicate places. [2024-11-08 16:35:27,200 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 163 flow [2024-11-08 16:35:27,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:27,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:27,201 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 16:35:27,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:35:27,202 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-08 16:35:27,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:27,203 INFO L85 PathProgramCache]: Analyzing trace with hash 14359980, now seen corresponding path program 1 times [2024-11-08 16:35:27,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:27,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998019809] [2024-11-08 16:35:27,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:27,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:27,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:27,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998019809] [2024-11-08 16:35:27,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998019809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:27,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:27,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:35:27,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604023105] [2024-11-08 16:35:27,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:27,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:35:27,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:27,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:35:27,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:35:27,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 96 [2024-11-08 16:35:27,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:27,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:27,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 96 [2024-11-08 16:35:27,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:27,984 INFO L124 PetriNetUnfolderBase]: 440/1297 cut-off events. [2024-11-08 16:35:27,985 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-08 16:35:27,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2167 conditions, 1297 events. 440/1297 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8084 event pairs, 225 based on Foata normal form. 2/1174 useless extension candidates. Maximal degree in co-relation 2128. Up to 812 conditions per place. [2024-11-08 16:35:27,996 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 67 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2024-11-08 16:35:27,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 100 transitions, 349 flow [2024-11-08 16:35:27,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:35:27,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:35:27,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2024-11-08 16:35:28,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-11-08 16:35:28,002 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 163 flow. Second operand 3 states and 171 transitions. [2024-11-08 16:35:28,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 100 transitions, 349 flow [2024-11-08 16:35:28,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 100 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:35:28,013 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 171 flow [2024-11-08 16:35:28,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2024-11-08 16:35:28,014 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -1 predicate places. [2024-11-08 16:35:28,015 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 171 flow [2024-11-08 16:35:28,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:28,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:28,017 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-08 16:35:28,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:35:28,022 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-08 16:35:28,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:28,023 INFO L85 PathProgramCache]: Analyzing trace with hash 219146942, now seen corresponding path program 1 times [2024-11-08 16:35:28,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:28,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423398560] [2024-11-08 16:35:28,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:28,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:28,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:28,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423398560] [2024-11-08 16:35:28,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423398560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:28,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950396648] [2024-11-08 16:35:28,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:28,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:28,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:28,330 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:28,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:35:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:28,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 16:35:28,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:28,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 16:35:28,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:28,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:28,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950396648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:28,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:28,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-08 16:35:28,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597323786] [2024-11-08 16:35:28,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:28,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:35:28,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:28,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:35:28,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:35:28,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 96 [2024-11-08 16:35:28,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 171 flow. Second operand has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:28,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:28,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 96 [2024-11-08 16:35:28,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:29,151 INFO L124 PetriNetUnfolderBase]: 70/231 cut-off events. [2024-11-08 16:35:29,152 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-08 16:35:29,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 231 events. 70/231 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 874 event pairs, 28 based on Foata normal form. 69/296 useless extension candidates. Maximal degree in co-relation 424. Up to 138 conditions per place. [2024-11-08 16:35:29,155 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 51 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2024-11-08 16:35:29,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 254 flow [2024-11-08 16:35:29,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:35:29,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:35:29,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 184 transitions. [2024-11-08 16:35:29,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-11-08 16:35:29,158 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 171 flow. Second operand 4 states and 184 transitions. [2024-11-08 16:35:29,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 254 flow [2024-11-08 16:35:29,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 248 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 16:35:29,163 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 96 flow [2024-11-08 16:35:29,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2024-11-08 16:35:29,164 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -30 predicate places. [2024-11-08 16:35:29,165 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 96 flow [2024-11-08 16:35:29,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:29,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:29,167 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2024-11-08 16:35:29,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 16:35:29,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:29,368 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-08 16:35:29,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:29,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1796378915, now seen corresponding path program 1 times [2024-11-08 16:35:29,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:29,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160889484] [2024-11-08 16:35:29,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:29,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:35:29,400 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:35:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:35:29,442 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:35:29,442 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:35:29,444 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-08 16:35:29,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-08 16:35:29,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-08 16:35:29,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-08 16:35:29,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-08 16:35:29,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-08 16:35:29,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 7 remaining) [2024-11-08 16:35:29,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:35:29,452 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-08 16:35:29,456 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 16:35:29,456 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-08 16:35:29,512 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 16:35:29,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 147 transitions, 310 flow [2024-11-08 16:35:29,564 INFO L124 PetriNetUnfolderBase]: 48/244 cut-off events. [2024-11-08 16:35:29,564 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-08 16:35:29,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 244 events. 48/244 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1054 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 153. Up to 8 conditions per place. [2024-11-08 16:35:29,568 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 147 transitions, 310 flow [2024-11-08 16:35:29,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 147 transitions, 310 flow [2024-11-08 16:35:29,574 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:35:29,576 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;@3c529ea1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:35:29,577 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-08 16:35:29,581 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:35:29,581 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-11-08 16:35:29,581 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:35:29,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:29,582 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 16:35:29,582 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-08 16:35:29,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:29,583 INFO L85 PathProgramCache]: Analyzing trace with hash 18885227, now seen corresponding path program 1 times [2024-11-08 16:35:29,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:29,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240183428] [2024-11-08 16:35:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:29,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:29,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:29,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:29,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240183428] [2024-11-08 16:35:29,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240183428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:29,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:29,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:35:29,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958021584] [2024-11-08 16:35:29,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:29,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:35:29,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:29,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:35:29,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:35:29,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 147 [2024-11-08 16:35:29,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 147 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:29,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:29,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 147 [2024-11-08 16:35:29,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:36,109 INFO L124 PetriNetUnfolderBase]: 19781/38791 cut-off events. [2024-11-08 16:35:36,110 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-08 16:35:36,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68814 conditions, 38791 events. 19781/38791 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 987. Compared 366608 event pairs, 16407 based on Foata normal form. 8330/45186 useless extension candidates. Maximal degree in co-relation 55422. Up to 26287 conditions per place. [2024-11-08 16:35:36,396 INFO L140 encePairwiseOnDemand]: 115/147 looper letters, 112 selfloop transitions, 2 changer transitions 1/162 dead transitions. [2024-11-08 16:35:36,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 162 transitions, 570 flow [2024-11-08 16:35:36,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:35:36,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:35:36,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2024-11-08 16:35:36,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7029478458049887 [2024-11-08 16:35:36,408 INFO L175 Difference]: Start difference. First operand has 118 places, 147 transitions, 310 flow. Second operand 3 states and 310 transitions. [2024-11-08 16:35:36,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 162 transitions, 570 flow [2024-11-08 16:35:36,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 162 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:35:36,416 INFO L231 Difference]: Finished difference. Result has 117 places, 115 transitions, 250 flow [2024-11-08 16:35:36,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=117, PETRI_TRANSITIONS=115} [2024-11-08 16:35:36,418 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -1 predicate places. [2024-11-08 16:35:36,418 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 250 flow [2024-11-08 16:35:36,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:36,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:36,419 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 16:35:36,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:35:36,420 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-08 16:35:36,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:36,420 INFO L85 PathProgramCache]: Analyzing trace with hash 18885228, now seen corresponding path program 1 times [2024-11-08 16:35:36,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:36,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271003211] [2024-11-08 16:35:36,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:36,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:36,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:36,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271003211] [2024-11-08 16:35:36,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271003211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:36,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:36,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:35:36,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744857550] [2024-11-08 16:35:36,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:36,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:35:36,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:36,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:35:36,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:35:36,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 147 [2024-11-08 16:35:36,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 115 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:36,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:36,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 147 [2024-11-08 16:35:36,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:41,044 INFO L124 PetriNetUnfolderBase]: 20393/41355 cut-off events. [2024-11-08 16:35:41,044 INFO L125 PetriNetUnfolderBase]: For 791/791 co-relation queries the response was YES. [2024-11-08 16:35:41,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72268 conditions, 41355 events. 20393/41355 cut-off events. For 791/791 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 400552 event pairs, 15013 based on Foata normal form. 2/37961 useless extension candidates. Maximal degree in co-relation 67547. Up to 30160 conditions per place. [2024-11-08 16:35:41,507 INFO L140 encePairwiseOnDemand]: 142/147 looper letters, 93 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2024-11-08 16:35:41,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 140 transitions, 490 flow [2024-11-08 16:35:41,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:35:41,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:35:41,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2024-11-08 16:35:41,510 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5419501133786848 [2024-11-08 16:35:41,511 INFO L175 Difference]: Start difference. First operand has 117 places, 115 transitions, 250 flow. Second operand 3 states and 239 transitions. [2024-11-08 16:35:41,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 140 transitions, 490 flow [2024-11-08 16:35:41,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 140 transitions, 486 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:35:41,661 INFO L231 Difference]: Finished difference. Result has 117 places, 116 transitions, 262 flow [2024-11-08 16:35:41,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=117, PETRI_TRANSITIONS=116} [2024-11-08 16:35:41,662 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -1 predicate places. [2024-11-08 16:35:41,666 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 116 transitions, 262 flow [2024-11-08 16:35:41,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:41,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:41,668 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-08 16:35:41,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:35:41,668 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-08 16:35:41,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:41,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1019470210, now seen corresponding path program 1 times [2024-11-08 16:35:41,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:41,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863848613] [2024-11-08 16:35:41,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:41,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:41,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:41,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863848613] [2024-11-08 16:35:41,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863848613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:41,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840209535] [2024-11-08 16:35:41,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:41,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:41,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:41,870 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:41,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:35:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:42,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 16:35:42,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:42,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 16:35:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:42,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:42,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:42,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840209535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:42,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:42,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-08 16:35:42,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118131641] [2024-11-08 16:35:42,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:42,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:35:42,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:42,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:35:42,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:35:42,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 147 [2024-11-08 16:35:42,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 116 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 48.42857142857143) internal successors, (339), 7 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:42,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:42,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 147 [2024-11-08 16:35:42,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:47,074 INFO L124 PetriNetUnfolderBase]: 21316/41128 cut-off events. [2024-11-08 16:35:47,074 INFO L125 PetriNetUnfolderBase]: For 2194/2194 co-relation queries the response was YES. [2024-11-08 16:35:47,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74171 conditions, 41128 events. 21316/41128 cut-off events. For 2194/2194 co-relation queries the response was YES. Maximal size of possible extension queue 1074. Compared 389034 event pairs, 1325 based on Foata normal form. 624/38855 useless extension candidates. Maximal degree in co-relation 6118. Up to 22733 conditions per place. [2024-11-08 16:35:47,347 INFO L140 encePairwiseOnDemand]: 141/147 looper letters, 186 selfloop transitions, 4 changer transitions 0/234 dead transitions. [2024-11-08 16:35:47,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 234 transitions, 876 flow [2024-11-08 16:35:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:35:47,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 16:35:47,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 424 transitions. [2024-11-08 16:35:47,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5768707482993197 [2024-11-08 16:35:47,351 INFO L175 Difference]: Start difference. First operand has 117 places, 116 transitions, 262 flow. Second operand 5 states and 424 transitions. [2024-11-08 16:35:47,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 234 transitions, 876 flow [2024-11-08 16:35:47,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 234 transitions, 874 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:35:47,361 INFO L231 Difference]: Finished difference. Result has 120 places, 115 transitions, 270 flow [2024-11-08 16:35:47,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=120, PETRI_TRANSITIONS=115} [2024-11-08 16:35:47,363 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 2 predicate places. [2024-11-08 16:35:47,364 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 115 transitions, 270 flow [2024-11-08 16:35:47,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 48.42857142857143) internal successors, (339), 7 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:47,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:47,365 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1] [2024-11-08 16:35:47,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:35:47,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184ce22a-6267-4f94-bc67-c773bb4c38c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:47,567 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-08 16:35:47,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:47,568 INFO L85 PathProgramCache]: Analyzing trace with hash 854898834, now seen corresponding path program 1 times [2024-11-08 16:35:47,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:47,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227850570] [2024-11-08 16:35:47,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:47,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:35:47,602 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:35:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:35:47,630 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:35:47,634 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:35:47,634 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-08 16:35:47,635 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-08 16:35:47,635 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-08 16:35:47,635 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-08 16:35:47,635 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-08 16:35:47,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-08 16:35:47,636 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 7 remaining) [2024-11-08 16:35:47,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 16:35:47,636 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-08 16:35:47,637 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 16:35:47,637 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-08 16:35:47,702 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 16:35:47,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 198 transitions, 423 flow [2024-11-08 16:35:47,773 INFO L124 PetriNetUnfolderBase]: 75/378 cut-off events. [2024-11-08 16:35:47,773 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-08 16:35:47,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 378 events. 75/378 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1750 event pairs, 1 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 255. Up to 16 conditions per place. [2024-11-08 16:35:47,777 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 198 transitions, 423 flow [2024-11-08 16:35:47,786 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 198 transitions, 423 flow [2024-11-08 16:35:47,790 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:35:47,791 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;@3c529ea1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:35:47,791 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-08 16:35:47,793 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:35:47,794 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-11-08 16:35:47,795 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:35:47,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:47,795 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 16:35:47,795 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-08 16:35:47,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:47,796 INFO L85 PathProgramCache]: Analyzing trace with hash 24980459, now seen corresponding path program 1 times [2024-11-08 16:35:47,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:47,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746822904] [2024-11-08 16:35:47,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:47,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:47,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:47,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:47,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746822904] [2024-11-08 16:35:47,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746822904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:47,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:47,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:35:47,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124409467] [2024-11-08 16:35:47,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:47,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:35:47,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:47,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:35:47,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:35:47,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 198 [2024-11-08 16:35:47,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 198 transitions, 423 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:47,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:47,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 198 [2024-11-08 16:35:47,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand