./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/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 a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:31:41,850 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:31:41,943 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:31:41,949 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:31:41,951 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:31:41,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:31:41,986 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:31:41,986 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:31:41,987 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:31:41,990 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:31:41,991 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:31:41,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:31:41,992 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:31:41,992 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:31:41,993 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:31:41,993 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:31:41,994 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:31:41,994 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:31:41,994 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:31:41,995 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:31:41,995 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:31:42,000 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:31:42,000 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:31:42,000 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:31:42,000 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:31:42,001 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:31:42,001 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:31:42,001 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:31:42,001 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:31:42,002 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:31:42,002 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:31:42,002 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:31:42,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:31:42,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:31:42,003 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:31:42,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:31:42,005 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:31:42,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:31:42,005 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:31:42,006 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:31:42,006 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:31:42,014 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:31:42,014 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d [2024-10-13 12:31:42,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:31:42,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:31:42,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:31:42,321 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:31:42,322 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:31:42,323 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2024-10-13 12:31:43,857 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:31:44,168 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:31:44,169 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2024-10-13 12:31:44,188 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db090514c/07868b7f79924120956fdf73c60c5193/FLAG82ba672ce [2024-10-13 12:31:44,208 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db090514c/07868b7f79924120956fdf73c60c5193 [2024-10-13 12:31:44,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:31:44,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:31:44,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:31:44,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:31:44,223 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:31:44,223 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:31:44" (1/1) ... [2024-10-13 12:31:44,224 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5e9927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:44, skipping insertion in model container [2024-10-13 12:31:44,224 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:31:44" (1/1) ... [2024-10-13 12:31:44,279 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:31:44,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:31:44,703 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:31:44,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:31:44,827 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:31:44,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:44 WrapperNode [2024-10-13 12:31:44,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:31:44,830 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:31:44,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:31:44,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:31:44,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:44" (1/1) ... [2024-10-13 12:31:44,866 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:44" (1/1) ... [2024-10-13 12:31:44,909 INFO L138 Inliner]: procedures = 274, calls = 53, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 175 [2024-10-13 12:31:44,909 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:31:44,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:31:44,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:31:44,911 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:31:44,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:44" (1/1) ... [2024-10-13 12:31:44,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:44" (1/1) ... [2024-10-13 12:31:44,930 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:44" (1/1) ... [2024-10-13 12:31:44,945 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-10-13 12:31:44,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:44" (1/1) ... [2024-10-13 12:31:44,946 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:44" (1/1) ... [2024-10-13 12:31:44,953 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:44" (1/1) ... [2024-10-13 12:31:44,961 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:44" (1/1) ... [2024-10-13 12:31:44,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:44" (1/1) ... [2024-10-13 12:31:44,966 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:44" (1/1) ... [2024-10-13 12:31:44,975 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:31:44,976 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:31:44,976 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:31:44,976 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:31:44,980 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:44" (1/1) ... [2024-10-13 12:31:44,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:31:45,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:31:45,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 12:31:45,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 12:31:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 12:31:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 12:31:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 12:31:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 12:31:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 12:31:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 12:31:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 12:31:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-13 12:31:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 12:31:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 12:31:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 12:31:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 12:31:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-13 12:31:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 12:31:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:31:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 12:31:45,083 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 12:31:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:31:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 12:31:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 12:31:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 12:31:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-13 12:31:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:31:45,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:31:45,087 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:31:45,252 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:31:45,254 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:31:45,557 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:31:45,558 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:31:45,774 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:31:45,774 INFO L314 CfgBuilder]: Removed 16 assume(true) statements. [2024-10-13 12:31:45,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:31:45 BoogieIcfgContainer [2024-10-13 12:31:45,775 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:31:45,777 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:31:45,777 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:31:45,781 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:31:45,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:31:44" (1/3) ... [2024-10-13 12:31:45,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a866bf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:31:45, skipping insertion in model container [2024-10-13 12:31:45,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:31:44" (2/3) ... [2024-10-13 12:31:45,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a866bf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:31:45, skipping insertion in model container [2024-10-13 12:31:45,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:31:45" (3/3) ... [2024-10-13 12:31:45,787 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2024-10-13 12:31:45,806 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:31:45,807 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-13 12:31:45,807 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:31:45,858 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-13 12:31:45,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 90 transitions, 187 flow [2024-10-13 12:31:45,955 INFO L124 PetriNetUnfolderBase]: 22/125 cut-off events. [2024-10-13 12:31:45,955 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 12:31:45,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 125 events. 22/125 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 482 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2024-10-13 12:31:45,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 90 transitions, 187 flow [2024-10-13 12:31:45,968 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 90 transitions, 187 flow [2024-10-13 12:31:45,977 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:31:45,984 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;@15d7010d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:31:45,984 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-13 12:31:45,988 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:31:45,988 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-13 12:31:45,988 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:31:45,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:31:45,989 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:31:45,990 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-13 12:31:45,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:31:45,996 INFO L85 PathProgramCache]: Analyzing trace with hash 474892, now seen corresponding path program 1 times [2024-10-13 12:31:46,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:31:46,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547004674] [2024-10-13 12:31:46,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:31:46,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:31:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:31:46,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:31:46,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:31:46,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547004674] [2024-10-13 12:31:46,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547004674] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:31:46,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:31:46,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:31:46,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009571473] [2024-10-13 12:31:46,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:31:46,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:31:46,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:31:46,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:31:46,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:31:46,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 90 [2024-10-13 12:31:46,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 90 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-10-13 12:31:46,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:31:46,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 90 [2024-10-13 12:31:46,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:31:46,817 INFO L124 PetriNetUnfolderBase]: 417/1219 cut-off events. [2024-10-13 12:31:46,817 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 12:31:46,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2100 conditions, 1219 events. 417/1219 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7506 event pairs, 353 based on Foata normal form. 220/1383 useless extension candidates. Maximal degree in co-relation 2039. Up to 778 conditions per place. [2024-10-13 12:31:46,836 INFO L140 encePairwiseOnDemand]: 70/90 looper letters, 65 selfloop transitions, 2 changer transitions 1/94 dead transitions. [2024-10-13 12:31:46,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 94 transitions, 331 flow [2024-10-13 12:31:46,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:31:46,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:31:46,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-10-13 12:31:46,853 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6518518518518519 [2024-10-13 12:31:46,855 INFO L175 Difference]: Start difference. First operand has 75 places, 90 transitions, 187 flow. Second operand 3 states and 176 transitions. [2024-10-13 12:31:46,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 94 transitions, 331 flow [2024-10-13 12:31:46,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 94 transitions, 331 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:31:46,870 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 151 flow [2024-10-13 12:31:46,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-10-13 12:31:46,879 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-10-13 12:31:46,879 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 151 flow [2024-10-13 12:31:46,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-10-13 12:31:46,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:31:46,879 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:31:46,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:31:46,880 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-13 12:31:46,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:31:46,881 INFO L85 PathProgramCache]: Analyzing trace with hash 474893, now seen corresponding path program 1 times [2024-10-13 12:31:46,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:31:46,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070040132] [2024-10-13 12:31:46,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:31:46,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:31:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:31:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:31:47,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:31:47,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070040132] [2024-10-13 12:31:47,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070040132] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:31:47,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:31:47,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:31:47,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396871842] [2024-10-13 12:31:47,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:31:47,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:31:47,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:31:47,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:31:47,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:31:47,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 90 [2024-10-13 12:31:47,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-10-13 12:31:47,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:31:47,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 90 [2024-10-13 12:31:47,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:31:47,372 INFO L124 PetriNetUnfolderBase]: 384/1114 cut-off events. [2024-10-13 12:31:47,373 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-13 12:31:47,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1943 conditions, 1114 events. 384/1114 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 7147 event pairs, 15 based on Foata normal form. 1/1034 useless extension candidates. Maximal degree in co-relation 1894. Up to 771 conditions per place. [2024-10-13 12:31:47,380 INFO L140 encePairwiseOnDemand]: 86/90 looper letters, 65 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2024-10-13 12:31:47,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 94 transitions, 333 flow [2024-10-13 12:31:47,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:31:47,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:31:47,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-10-13 12:31:47,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-10-13 12:31:47,387 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 151 flow. Second operand 3 states and 156 transitions. [2024-10-13 12:31:47,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 94 transitions, 333 flow [2024-10-13 12:31:47,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 94 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:31:47,394 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 157 flow [2024-10-13 12:31:47,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-10-13 12:31:47,396 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-10-13 12:31:47,396 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 157 flow [2024-10-13 12:31:47,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-10-13 12:31:47,397 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:31:47,397 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-13 12:31:47,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 12:31:47,398 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-13 12:31:47,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:31:47,399 INFO L85 PathProgramCache]: Analyzing trace with hash 501731155, now seen corresponding path program 1 times [2024-10-13 12:31:47,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:31:47,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948794463] [2024-10-13 12:31:47,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:31:47,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:31:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:31:47,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:31:47,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:31:47,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948794463] [2024-10-13 12:31:47,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948794463] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:31:47,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261975518] [2024-10-13 12:31:47,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:31:47,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:31:47,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:31:47,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:31:47,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 12:31:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:31:47,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 12:31:47,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:31:47,755 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 [2024-10-13 12:31:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:31:47,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:31:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:31:47,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261975518] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:31:47,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:31:47,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-10-13 12:31:47,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601143609] [2024-10-13 12:31:47,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:31:47,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 12:31:47,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:31:47,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 12:31:47,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-13 12:31:47,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 90 [2024-10-13 12:31:47,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 157 flow. Second operand has 9 states, 9 states have (on average 30.333333333333332) internal successors, (273), 9 states have internal predecessors, (273), 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) [2024-10-13 12:31:47,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:31:47,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 90 [2024-10-13 12:31:47,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:31:48,126 INFO L124 PetriNetUnfolderBase]: 70/222 cut-off events. [2024-10-13 12:31:48,127 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-10-13 12:31:48,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 222 events. 70/222 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 800 event pairs, 28 based on Foata normal form. 46/263 useless extension candidates. Maximal degree in co-relation 415. Up to 138 conditions per place. [2024-10-13 12:31:48,129 INFO L140 encePairwiseOnDemand]: 86/90 looper letters, 51 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-10-13 12:31:48,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 68 transitions, 252 flow [2024-10-13 12:31:48,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:31:48,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:31:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-10-13 12:31:48,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4638888888888889 [2024-10-13 12:31:48,133 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 157 flow. Second operand 4 states and 167 transitions. [2024-10-13 12:31:48,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 68 transitions, 252 flow [2024-10-13 12:31:48,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 246 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:31:48,136 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 94 flow [2024-10-13 12:31:48,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-10-13 12:31:48,137 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -27 predicate places. [2024-10-13 12:31:48,137 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 94 flow [2024-10-13 12:31:48,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 30.333333333333332) internal successors, (273), 9 states have internal predecessors, (273), 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) [2024-10-13 12:31:48,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:31:48,138 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-10-13 12:31:48,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 12:31:48,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:31:48,343 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-13 12:31:48,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:31:48,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1626202901, now seen corresponding path program 1 times [2024-10-13 12:31:48,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:31:48,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481440334] [2024-10-13 12:31:48,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:31:48,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:31:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:31:48,370 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 12:31:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:31:48,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 12:31:48,412 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 12:31:48,413 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-10-13 12:31:48,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-10-13 12:31:48,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-10-13 12:31:48,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2024-10-13 12:31:48,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-10-13 12:31:48,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-10-13 12:31:48,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-10-13 12:31:48,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 12:31:48,420 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-13 12:31:48,423 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 12:31:48,423 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 12:31:48,459 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 12:31:48,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 141 transitions, 298 flow [2024-10-13 12:31:48,482 INFO L124 PetriNetUnfolderBase]: 41/223 cut-off events. [2024-10-13 12:31:48,483 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 12:31:48,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 223 events. 41/223 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1027 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 144. Up to 6 conditions per place. [2024-10-13 12:31:48,486 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 141 transitions, 298 flow [2024-10-13 12:31:48,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 141 transitions, 298 flow [2024-10-13 12:31:48,490 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:31:48,491 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;@15d7010d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:31:48,491 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-13 12:31:48,493 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:31:48,493 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-13 12:31:48,493 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:31:48,493 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:31:48,493 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:31:48,493 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-13 12:31:48,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:31:48,494 INFO L85 PathProgramCache]: Analyzing trace with hash 614905, now seen corresponding path program 1 times [2024-10-13 12:31:48,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:31:48,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279330657] [2024-10-13 12:31:48,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:31:48,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:31:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:31:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:31:48,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:31:48,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279330657] [2024-10-13 12:31:48,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279330657] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:31:48,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:31:48,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:31:48,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506708666] [2024-10-13 12:31:48,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:31:48,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:31:48,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:31:48,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:31:48,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:31:48,540 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 141 [2024-10-13 12:31:48,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 141 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2024-10-13 12:31:48,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:31:48,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 141 [2024-10-13 12:31:48,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:31:52,837 INFO L124 PetriNetUnfolderBase]: 20611/40354 cut-off events. [2024-10-13 12:31:52,838 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-10-13 12:31:52,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71989 conditions, 40354 events. 20611/40354 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 377814 event pairs, 17426 based on Foata normal form. 8616/46783 useless extension candidates. Maximal degree in co-relation 60927. Up to 27900 conditions per place. [2024-10-13 12:31:53,116 INFO L140 encePairwiseOnDemand]: 109/141 looper letters, 113 selfloop transitions, 2 changer transitions 1/156 dead transitions. [2024-10-13 12:31:53,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 156 transitions, 560 flow [2024-10-13 12:31:53,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:31:53,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:31:53,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2024-10-13 12:31:53,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6855791962174941 [2024-10-13 12:31:53,124 INFO L175 Difference]: Start difference. First operand has 114 places, 141 transitions, 298 flow. Second operand 3 states and 290 transitions. [2024-10-13 12:31:53,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 156 transitions, 560 flow [2024-10-13 12:31:53,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 156 transitions, 560 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:31:53,130 INFO L231 Difference]: Finished difference. Result has 113 places, 109 transitions, 238 flow [2024-10-13 12:31:53,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=113, PETRI_TRANSITIONS=109} [2024-10-13 12:31:53,134 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -1 predicate places. [2024-10-13 12:31:53,135 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 109 transitions, 238 flow [2024-10-13 12:31:53,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2024-10-13 12:31:53,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:31:53,135 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:31:53,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 12:31:53,135 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-13 12:31:53,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:31:53,136 INFO L85 PathProgramCache]: Analyzing trace with hash 614906, now seen corresponding path program 1 times [2024-10-13 12:31:53,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:31:53,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014963897] [2024-10-13 12:31:53,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:31:53,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:31:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:31:53,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:31:53,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:31:53,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014963897] [2024-10-13 12:31:53,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014963897] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:31:53,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:31:53,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:31:53,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270668957] [2024-10-13 12:31:53,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:31:53,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:31:53,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:31:53,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:31:53,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:31:53,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 141 [2024-10-13 12:31:53,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 109 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2024-10-13 12:31:53,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:31:53,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 141 [2024-10-13 12:31:53,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:31:56,037 INFO L124 PetriNetUnfolderBase]: 18236/37364 cut-off events. [2024-10-13 12:31:56,037 INFO L125 PetriNetUnfolderBase]: For 391/391 co-relation queries the response was YES. [2024-10-13 12:31:56,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65967 conditions, 37364 events. 18236/37364 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 361308 event pairs, 14096 based on Foata normal form. 1/35026 useless extension candidates. Maximal degree in co-relation 61223. Up to 27850 conditions per place. [2024-10-13 12:31:56,280 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 91 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2024-10-13 12:31:56,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 134 transitions, 474 flow [2024-10-13 12:31:56,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:31:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:31:56,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2024-10-13 12:31:56,283 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-10-13 12:31:56,283 INFO L175 Difference]: Start difference. First operand has 113 places, 109 transitions, 238 flow. Second operand 3 states and 224 transitions. [2024-10-13 12:31:56,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 134 transitions, 474 flow [2024-10-13 12:31:56,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 134 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:31:56,382 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 248 flow [2024-10-13 12:31:56,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=113, PETRI_TRANSITIONS=110} [2024-10-13 12:31:56,384 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -1 predicate places. [2024-10-13 12:31:56,385 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 248 flow [2024-10-13 12:31:56,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2024-10-13 12:31:56,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:31:56,386 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-13 12:31:56,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 12:31:56,386 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-13 12:31:56,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:31:56,387 INFO L85 PathProgramCache]: Analyzing trace with hash 963458351, now seen corresponding path program 1 times [2024-10-13 12:31:56,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:31:56,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707181355] [2024-10-13 12:31:56,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:31:56,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:31:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:31:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:31:56,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:31:56,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707181355] [2024-10-13 12:31:56,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707181355] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:31:56,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600287026] [2024-10-13 12:31:56,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:31:56,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:31:56,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:31:56,535 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:31:56,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 12:31:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:31:56,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 12:31:56,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:31:56,654 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 [2024-10-13 12:31:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:31:56,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:31:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:31:56,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600287026] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:31:56,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:31:56,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-10-13 12:31:56,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263649150] [2024-10-13 12:31:56,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:31:56,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 12:31:56,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:31:56,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 12:31:56,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-13 12:31:56,863 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 141 [2024-10-13 12:31:56,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 110 transitions, 248 flow. Second operand has 9 states, 9 states have (on average 44.333333333333336) internal successors, (399), 9 states have internal predecessors, (399), 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) [2024-10-13 12:31:56,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:31:56,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 141 [2024-10-13 12:31:56,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:31:57,659 INFO L124 PetriNetUnfolderBase]: 4048/7420 cut-off events. [2024-10-13 12:31:57,659 INFO L125 PetriNetUnfolderBase]: For 1240/1240 co-relation queries the response was YES. [2024-10-13 12:31:57,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14491 conditions, 7420 events. 4048/7420 cut-off events. For 1240/1240 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 53318 event pairs, 432 based on Foata normal form. 1198/8146 useless extension candidates. Maximal degree in co-relation 5290. Up to 5146 conditions per place. [2024-10-13 12:31:57,709 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 123 selfloop transitions, 3 changer transitions 0/155 dead transitions. [2024-10-13 12:31:57,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 155 transitions, 580 flow [2024-10-13 12:31:57,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:31:57,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:31:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 340 transitions. [2024-10-13 12:31:57,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-10-13 12:31:57,711 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 248 flow. Second operand 5 states and 340 transitions. [2024-10-13 12:31:57,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 155 transitions, 580 flow [2024-10-13 12:31:57,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 155 transitions, 578 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:31:57,715 INFO L231 Difference]: Finished difference. Result has 90 places, 82 transitions, 186 flow [2024-10-13 12:31:57,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2024-10-13 12:31:57,716 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -24 predicate places. [2024-10-13 12:31:57,716 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 186 flow [2024-10-13 12:31:57,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 44.333333333333336) internal successors, (399), 9 states have internal predecessors, (399), 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) [2024-10-13 12:31:57,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:31:57,717 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-10-13 12:31:57,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 12:31:57,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-13 12:31:57,922 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-13 12:31:57,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:31:57,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1983876935, now seen corresponding path program 1 times [2024-10-13 12:31:57,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:31:57,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522730618] [2024-10-13 12:31:57,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:31:57,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:31:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:31:57,943 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 12:31:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:31:57,966 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 12:31:57,966 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 12:31:57,967 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-10-13 12:31:57,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-10-13 12:31:57,968 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-10-13 12:31:57,968 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2024-10-13 12:31:57,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-10-13 12:31:57,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-10-13 12:31:57,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-10-13 12:31:57,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 12:31:57,969 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-13 12:31:57,971 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 12:31:57,972 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 12:31:58,014 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 12:31:58,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 192 transitions, 411 flow [2024-10-13 12:31:58,114 INFO L124 PetriNetUnfolderBase]: 63/342 cut-off events. [2024-10-13 12:31:58,115 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 12:31:58,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 342 events. 63/342 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1708 event pairs, 1 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 234. Up to 12 conditions per place. [2024-10-13 12:31:58,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 192 transitions, 411 flow [2024-10-13 12:31:58,125 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 192 transitions, 411 flow [2024-10-13 12:31:58,126 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:31:58,127 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;@15d7010d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:31:58,127 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-13 12:31:58,129 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:31:58,129 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-13 12:31:58,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:31:58,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:31:58,129 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:31:58,129 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-13 12:31:58,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:31:58,130 INFO L85 PathProgramCache]: Analyzing trace with hash 805561, now seen corresponding path program 1 times [2024-10-13 12:31:58,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:31:58,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487613730] [2024-10-13 12:31:58,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:31:58,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:31:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:31:58,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:31:58,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:31:58,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487613730] [2024-10-13 12:31:58,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487613730] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:31:58,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:31:58,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:31:58,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043365454] [2024-10-13 12:31:58,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:31:58,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:31:58,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:31:58,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:31:58,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:31:58,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 192 [2024-10-13 12:31:58,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 192 transitions, 411 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) [2024-10-13 12:31:58,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:31:58,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 192 [2024-10-13 12:31:58,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand