./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_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 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:29:05,230 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:29:05,300 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:29:05,304 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:29:05,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:29:05,331 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:29:05,332 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:29:05,332 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:29:05,333 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:29:05,337 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:29:05,337 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:29:05,338 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:29:05,338 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:29:05,339 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:29:05,339 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:29:05,339 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:29:05,339 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:29:05,340 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:29:05,340 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:29:05,342 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:29:05,343 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:29:05,343 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:29:05,343 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:29:05,344 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:29:05,344 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:29:05,344 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:29:05,345 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:29:05,345 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:29:05,345 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:29:05,345 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:29:05,346 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:29:05,346 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:29:05,346 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:29:05,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:29:05,347 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:29:05,347 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:29:05,347 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:29:05,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:29:05,349 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:29:05,349 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:29:05,349 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:29:05,349 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:29:05,350 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 [2024-11-17 03:29:05,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:29:05,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:29:05,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:29:05,749 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:29:05,749 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:29:05,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2024-11-17 03:29:07,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:29:07,527 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:29:07,528 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2024-11-17 03:29:07,545 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5b4ad127/d72c9226496f4f889ebf15f4931b2d24/FLAG212ab6a64 [2024-11-17 03:29:07,565 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5b4ad127/d72c9226496f4f889ebf15f4931b2d24 [2024-11-17 03:29:07,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:29:07,569 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:29:07,572 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:29:07,572 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:29:07,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:29:07,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:29:07" (1/1) ... [2024-11-17 03:29:07,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59d0fd80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:29:07, skipping insertion in model container [2024-11-17 03:29:07,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:29:07" (1/1) ... [2024-11-17 03:29:07,637 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:29:08,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:29:08,218 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:29:08,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:29:08,361 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:29:08,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:29:08 WrapperNode [2024-11-17 03:29:08,362 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:29:08,364 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:29:08,364 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:29:08,364 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:29:08,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:29:08" (1/1) ... [2024-11-17 03:29:08,397 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:29:08" (1/1) ... [2024-11-17 03:29:08,441 INFO L138 Inliner]: procedures = 272, calls = 110, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 330 [2024-11-17 03:29:08,442 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:29:08,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:29:08,444 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:29:08,444 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:29:08,461 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:29:08" (1/1) ... [2024-11-17 03:29:08,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:29:08" (1/1) ... [2024-11-17 03:29:08,470 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:29:08" (1/1) ... [2024-11-17 03:29:08,501 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 5, 2, 75]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 0, 60]. The 7 writes are split as follows [0, 0, 1, 6]. [2024-11-17 03:29:08,503 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:29:08" (1/1) ... [2024-11-17 03:29:08,504 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:29:08" (1/1) ... [2024-11-17 03:29:08,524 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:29:08" (1/1) ... [2024-11-17 03:29:08,525 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:29:08" (1/1) ... [2024-11-17 03:29:08,531 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:29:08" (1/1) ... [2024-11-17 03:29:08,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:29:08" (1/1) ... [2024-11-17 03:29:08,537 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:29:08,541 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:29:08,541 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:29:08,541 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:29:08,542 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:29:08" (1/1) ... [2024-11-17 03:29:08,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:29:08,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:29:08,580 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) [2024-11-17 03:29:08,592 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 [2024-11-17 03:29:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 03:29:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 03:29:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 03:29:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 03:29:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 03:29:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 03:29:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 03:29:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:29:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 03:29:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 03:29:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 03:29:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 03:29:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:29:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-17 03:29:08,673 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-17 03:29:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:29:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:29:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 03:29:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 03:29:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:29:08,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:29:08,675 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:29:08,865 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:29:08,867 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:29:09,316 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L953: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-17 03:29:09,317 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L953-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-17 03:29:09,429 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:29:09,430 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:29:09,922 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:29:09,923 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:29:09,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:29:09 BoogieIcfgContainer [2024-11-17 03:29:09,924 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:29:09,926 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:29:09,926 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:29:09,930 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:29:09,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:29:07" (1/3) ... [2024-11-17 03:29:09,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7533cd09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:29:09, skipping insertion in model container [2024-11-17 03:29:09,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:29:08" (2/3) ... [2024-11-17 03:29:09,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7533cd09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:29:09, skipping insertion in model container [2024-11-17 03:29:09,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:29:09" (3/3) ... [2024-11-17 03:29:09,935 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2024-11-17 03:29:09,956 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:29:09,957 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-11-17 03:29:09,957 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:29:10,037 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-17 03:29:10,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 222 transitions, 451 flow [2024-11-17 03:29:10,211 INFO L124 PetriNetUnfolderBase]: 78/366 cut-off events. [2024-11-17 03:29:10,211 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 03:29:10,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 366 events. 78/366 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2103 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 212. Up to 8 conditions per place. [2024-11-17 03:29:10,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 222 transitions, 451 flow [2024-11-17 03:29:10,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 222 transitions, 451 flow [2024-11-17 03:29:10,248 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:29:10,256 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;@7a7066eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:29:10,257 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-17 03:29:10,263 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:29:10,265 INFO L124 PetriNetUnfolderBase]: 3/12 cut-off events. [2024-11-17 03:29:10,266 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:29:10,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:29:10,267 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 03:29:10,267 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-17 03:29:10,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:29:10,275 INFO L85 PathProgramCache]: Analyzing trace with hash 255114319, now seen corresponding path program 1 times [2024-11-17 03:29:10,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:29:10,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551453625] [2024-11-17 03:29:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:10,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:29:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:29:10,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:29:10,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:29:10,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551453625] [2024-11-17 03:29:10,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551453625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:29:10,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:29:10,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:29:10,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245857870] [2024-11-17 03:29:10,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:29:10,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:29:10,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:29:10,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:29:10,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:29:10,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 222 [2024-11-17 03:29:10,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 222 transitions, 451 flow. Second operand has 2 states, 2 states have (on average 108.0) internal successors, (216), 2 states have internal predecessors, (216), 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) [2024-11-17 03:29:10,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:29:10,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 222 [2024-11-17 03:29:10,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:29:11,248 INFO L124 PetriNetUnfolderBase]: 1062/3772 cut-off events. [2024-11-17 03:29:11,248 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-17 03:29:11,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5788 conditions, 3772 events. 1062/3772 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 34871 event pairs, 903 based on Foata normal form. 1101/4390 useless extension candidates. Maximal degree in co-relation 5609. Up to 2011 conditions per place. [2024-11-17 03:29:11,284 INFO L140 encePairwiseOnDemand]: 181/222 looper letters, 72 selfloop transitions, 0 changer transitions 0/178 dead transitions. [2024-11-17 03:29:11,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 178 transitions, 507 flow [2024-11-17 03:29:11,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:29:11,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:29:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 325 transitions. [2024-11-17 03:29:11,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7319819819819819 [2024-11-17 03:29:11,304 INFO L175 Difference]: Start difference. First operand has 177 places, 222 transitions, 451 flow. Second operand 2 states and 325 transitions. [2024-11-17 03:29:11,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 178 transitions, 507 flow [2024-11-17 03:29:11,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 178 transitions, 507 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:29:11,314 INFO L231 Difference]: Finished difference. Result has 175 places, 178 transitions, 363 flow [2024-11-17 03:29:11,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=363, PETRI_PLACES=175, PETRI_TRANSITIONS=178} [2024-11-17 03:29:11,324 INFO L277 CegarLoopForPetriNet]: 177 programPoint places, -2 predicate places. [2024-11-17 03:29:11,324 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 178 transitions, 363 flow [2024-11-17 03:29:11,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 108.0) internal successors, (216), 2 states have internal predecessors, (216), 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) [2024-11-17 03:29:11,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:29:11,325 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:29:11,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:29:11,326 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-17 03:29:11,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:29:11,327 INFO L85 PathProgramCache]: Analyzing trace with hash -596545658, now seen corresponding path program 1 times [2024-11-17 03:29:11,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:29:11,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243580863] [2024-11-17 03:29:11,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:11,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:29:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:29:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:29:11,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:29:11,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243580863] [2024-11-17 03:29:11,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243580863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:29:11,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:29:11,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:29:11,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148608570] [2024-11-17 03:29:11,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:29:11,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:29:11,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:29:11,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:29:11,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:29:11,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 222 [2024-11-17 03:29:11,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 178 transitions, 363 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2024-11-17 03:29:11,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:29:11,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 222 [2024-11-17 03:29:11,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:29:12,070 INFO L124 PetriNetUnfolderBase]: 1062/3774 cut-off events. [2024-11-17 03:29:12,071 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-17 03:29:12,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5793 conditions, 3774 events. 1062/3774 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 34829 event pairs, 903 based on Foata normal form. 0/3290 useless extension candidates. Maximal degree in co-relation 5789. Up to 2012 conditions per place. [2024-11-17 03:29:12,099 INFO L140 encePairwiseOnDemand]: 219/222 looper letters, 72 selfloop transitions, 2 changer transitions 0/179 dead transitions. [2024-11-17 03:29:12,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 179 transitions, 513 flow [2024-11-17 03:29:12,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:29:12,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:29:12,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2024-11-17 03:29:12,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5855855855855856 [2024-11-17 03:29:12,103 INFO L175 Difference]: Start difference. First operand has 175 places, 178 transitions, 363 flow. Second operand 3 states and 390 transitions. [2024-11-17 03:29:12,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 179 transitions, 513 flow [2024-11-17 03:29:12,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 179 transitions, 513 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:29:12,108 INFO L231 Difference]: Finished difference. Result has 178 places, 179 transitions, 375 flow [2024-11-17 03:29:12,109 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=375, PETRI_PLACES=178, PETRI_TRANSITIONS=179} [2024-11-17 03:29:12,110 INFO L277 CegarLoopForPetriNet]: 177 programPoint places, 1 predicate places. [2024-11-17 03:29:12,110 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 179 transitions, 375 flow [2024-11-17 03:29:12,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2024-11-17 03:29:12,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:29:12,111 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:29:12,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:29:12,112 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-17 03:29:12,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:29:12,114 INFO L85 PathProgramCache]: Analyzing trace with hash -250818362, now seen corresponding path program 1 times [2024-11-17 03:29:12,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:29:12,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871631911] [2024-11-17 03:29:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:12,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:29:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:29:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:29:12,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:29:12,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871631911] [2024-11-17 03:29:12,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871631911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:29:12,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459702795] [2024-11-17 03:29:12,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:12,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:29:12,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:29:12,205 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) [2024-11-17 03:29:12,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:29:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:29:12,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 03:29:12,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:29:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:29:12,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:29:12,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:29:12,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459702795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:29:12,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:29:12,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-17 03:29:12,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485173775] [2024-11-17 03:29:12,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:29:12,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 03:29:12,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:29:12,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 03:29:12,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-17 03:29:12,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 222 [2024-11-17 03:29:12,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 179 transitions, 375 flow. Second operand has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 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) [2024-11-17 03:29:12,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:29:12,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 222 [2024-11-17 03:29:12,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:29:13,093 INFO L124 PetriNetUnfolderBase]: 1062/3780 cut-off events. [2024-11-17 03:29:13,093 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-17 03:29:13,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5812 conditions, 3780 events. 1062/3780 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 34819 event pairs, 903 based on Foata normal form. 0/3296 useless extension candidates. Maximal degree in co-relation 5806. Up to 2012 conditions per place. [2024-11-17 03:29:13,118 INFO L140 encePairwiseOnDemand]: 219/222 looper letters, 72 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2024-11-17 03:29:13,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 182 transitions, 541 flow [2024-11-17 03:29:13,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:29:13,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:29:13,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 710 transitions. [2024-11-17 03:29:13,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5330330330330331 [2024-11-17 03:29:13,122 INFO L175 Difference]: Start difference. First operand has 178 places, 179 transitions, 375 flow. Second operand 6 states and 710 transitions. [2024-11-17 03:29:13,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 182 transitions, 541 flow [2024-11-17 03:29:13,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 182 transitions, 539 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:29:13,127 INFO L231 Difference]: Finished difference. Result has 185 places, 182 transitions, 409 flow [2024-11-17 03:29:13,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=409, PETRI_PLACES=185, PETRI_TRANSITIONS=182} [2024-11-17 03:29:13,128 INFO L277 CegarLoopForPetriNet]: 177 programPoint places, 8 predicate places. [2024-11-17 03:29:13,128 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 182 transitions, 409 flow [2024-11-17 03:29:13,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 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) [2024-11-17 03:29:13,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:29:13,129 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-11-17 03:29:13,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 03:29:13,333 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 [2024-11-17 03:29:13,334 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-17 03:29:13,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:29:13,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1614484614, now seen corresponding path program 2 times [2024-11-17 03:29:13,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:29:13,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956276083] [2024-11-17 03:29:13,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:13,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:29:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:29:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 03:29:13,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:29:13,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956276083] [2024-11-17 03:29:13,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956276083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:29:13,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:29:13,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:29:13,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136446752] [2024-11-17 03:29:13,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:29:13,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:29:13,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:29:13,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:29:13,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:29:13,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 222 [2024-11-17 03:29:13,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 182 transitions, 409 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2024-11-17 03:29:13,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:29:13,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 222 [2024-11-17 03:29:13,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:29:14,012 INFO L124 PetriNetUnfolderBase]: 1108/3854 cut-off events. [2024-11-17 03:29:14,012 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-17 03:29:14,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5990 conditions, 3854 events. 1108/3854 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 35355 event pairs, 903 based on Foata normal form. 0/3409 useless extension candidates. Maximal degree in co-relation 5981. Up to 2007 conditions per place. [2024-11-17 03:29:14,035 INFO L140 encePairwiseOnDemand]: 218/222 looper letters, 98 selfloop transitions, 2 changer transitions 0/202 dead transitions. [2024-11-17 03:29:14,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 202 transitions, 649 flow [2024-11-17 03:29:14,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:29:14,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:29:14,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 404 transitions. [2024-11-17 03:29:14,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6066066066066066 [2024-11-17 03:29:14,038 INFO L175 Difference]: Start difference. First operand has 185 places, 182 transitions, 409 flow. Second operand 3 states and 404 transitions. [2024-11-17 03:29:14,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 202 transitions, 649 flow [2024-11-17 03:29:14,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 202 transitions, 641 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-17 03:29:14,043 INFO L231 Difference]: Finished difference. Result has 184 places, 180 transitions, 401 flow [2024-11-17 03:29:14,044 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=401, PETRI_PLACES=184, PETRI_TRANSITIONS=180} [2024-11-17 03:29:14,045 INFO L277 CegarLoopForPetriNet]: 177 programPoint places, 7 predicate places. [2024-11-17 03:29:14,045 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 180 transitions, 401 flow [2024-11-17 03:29:14,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2024-11-17 03:29:14,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:29:14,045 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-11-17 03:29:14,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:29:14,046 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-17 03:29:14,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:29:14,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1614484615, now seen corresponding path program 1 times [2024-11-17 03:29:14,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:29:14,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991986312] [2024-11-17 03:29:14,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:14,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:29:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:29:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 03:29:14,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:29:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991986312] [2024-11-17 03:29:14,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991986312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:29:14,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:29:14,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:29:14,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534863396] [2024-11-17 03:29:14,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:29:14,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:29:14,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:29:14,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:29:14,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:29:14,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 222 [2024-11-17 03:29:14,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 180 transitions, 401 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2024-11-17 03:29:14,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:29:14,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 222 [2024-11-17 03:29:14,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:29:14,794 INFO L124 PetriNetUnfolderBase]: 1104/3790 cut-off events. [2024-11-17 03:29:14,794 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-11-17 03:29:14,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5902 conditions, 3790 events. 1104/3790 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 34545 event pairs, 880 based on Foata normal form. 1/3331 useless extension candidates. Maximal degree in co-relation 5892. Up to 2036 conditions per place. [2024-11-17 03:29:14,819 INFO L140 encePairwiseOnDemand]: 218/222 looper letters, 99 selfloop transitions, 2 changer transitions 0/203 dead transitions. [2024-11-17 03:29:14,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 203 transitions, 649 flow [2024-11-17 03:29:14,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:29:14,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:29:14,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 411 transitions. [2024-11-17 03:29:14,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6171171171171171 [2024-11-17 03:29:14,822 INFO L175 Difference]: Start difference. First operand has 184 places, 180 transitions, 401 flow. Second operand 3 states and 411 transitions. [2024-11-17 03:29:14,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 203 transitions, 649 flow [2024-11-17 03:29:14,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 203 transitions, 645 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:29:14,832 INFO L231 Difference]: Finished difference. Result has 185 places, 180 transitions, 407 flow [2024-11-17 03:29:14,832 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=407, PETRI_PLACES=185, PETRI_TRANSITIONS=180} [2024-11-17 03:29:14,833 INFO L277 CegarLoopForPetriNet]: 177 programPoint places, 8 predicate places. [2024-11-17 03:29:14,835 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 180 transitions, 407 flow [2024-11-17 03:29:14,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2024-11-17 03:29:14,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:29:14,835 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:29:14,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:29:14,836 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-17 03:29:14,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:29:14,836 INFO L85 PathProgramCache]: Analyzing trace with hash -971884434, now seen corresponding path program 1 times [2024-11-17 03:29:14,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:29:14,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059612794] [2024-11-17 03:29:14,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:14,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:29:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:29:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:29:14,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:29:14,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059612794] [2024-11-17 03:29:14,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059612794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:29:14,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700632162] [2024-11-17 03:29:14,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:14,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:29:14,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:29:14,954 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) [2024-11-17 03:29:14,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 03:29:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:29:15,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 03:29:15,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:29:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:29:15,089 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:29:15,158 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:29:15,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700632162] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:29:15,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:29:15,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-17 03:29:15,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307153420] [2024-11-17 03:29:15,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:29:15,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 03:29:15,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:29:15,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 03:29:15,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-17 03:29:15,166 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 222 [2024-11-17 03:29:15,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 180 transitions, 407 flow. Second operand has 13 states, 13 states have (on average 106.38461538461539) internal successors, (1383), 13 states have internal predecessors, (1383), 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) [2024-11-17 03:29:15,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:29:15,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 222 [2024-11-17 03:29:15,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:29:15,838 INFO L124 PetriNetUnfolderBase]: 1058/3669 cut-off events. [2024-11-17 03:29:15,839 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2024-11-17 03:29:15,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5738 conditions, 3669 events. 1058/3669 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 33396 event pairs, 903 based on Foata normal form. 6/3231 useless extension candidates. Maximal degree in co-relation 5727. Up to 1972 conditions per place. [2024-11-17 03:29:15,866 INFO L140 encePairwiseOnDemand]: 219/222 looper letters, 72 selfloop transitions, 11 changer transitions 0/186 dead transitions. [2024-11-17 03:29:15,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 186 transitions, 609 flow [2024-11-17 03:29:15,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 03:29:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 03:29:15,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1349 transitions. [2024-11-17 03:29:15,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5063813813813813 [2024-11-17 03:29:15,871 INFO L175 Difference]: Start difference. First operand has 185 places, 180 transitions, 407 flow. Second operand 12 states and 1349 transitions. [2024-11-17 03:29:15,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 186 transitions, 609 flow [2024-11-17 03:29:15,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 186 transitions, 605 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:29:15,878 INFO L231 Difference]: Finished difference. Result has 200 places, 186 transitions, 487 flow [2024-11-17 03:29:15,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=487, PETRI_PLACES=200, PETRI_TRANSITIONS=186} [2024-11-17 03:29:15,879 INFO L277 CegarLoopForPetriNet]: 177 programPoint places, 23 predicate places. [2024-11-17 03:29:15,880 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 186 transitions, 487 flow [2024-11-17 03:29:15,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 106.38461538461539) internal successors, (1383), 13 states have internal predecessors, (1383), 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) [2024-11-17 03:29:15,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:29:15,882 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:29:15,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 03:29:16,085 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,SelfDestructingSolverStorable5 [2024-11-17 03:29:16,086 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-17 03:29:16,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:29:16,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1613639442, now seen corresponding path program 2 times [2024-11-17 03:29:16,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:29:16,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876407393] [2024-11-17 03:29:16,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:16,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:29:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:29:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-17 03:29:16,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:29:16,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876407393] [2024-11-17 03:29:16,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876407393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:29:16,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995390010] [2024-11-17 03:29:16,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:29:16,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:29:16,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:29:16,266 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:29:16,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 03:29:16,375 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:29:16,375 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:29:16,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 03:29:16,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:29:16,426 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 [2024-11-17 03:29:16,511 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-17 03:29:16,511 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:29:16,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995390010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:29:16,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 03:29:16,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-17 03:29:16,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141498457] [2024-11-17 03:29:16,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:29:16,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:29:16,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:29:16,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:29:16,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-17 03:29:16,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 222 [2024-11-17 03:29:16,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 186 transitions, 487 flow. Second operand has 5 states, 5 states have (on average 105.6) internal successors, (528), 5 states have internal predecessors, (528), 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) [2024-11-17 03:29:16,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:29:16,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 222 [2024-11-17 03:29:16,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:29:17,159 INFO L124 PetriNetUnfolderBase]: 1037/3568 cut-off events. [2024-11-17 03:29:17,159 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2024-11-17 03:29:17,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5682 conditions, 3568 events. 1037/3568 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 32518 event pairs, 0 based on Foata normal form. 22/3228 useless extension candidates. Maximal degree in co-relation 5665. Up to 1843 conditions per place. [2024-11-17 03:29:17,178 INFO L140 encePairwiseOnDemand]: 217/222 looper letters, 146 selfloop transitions, 4 changer transitions 0/252 dead transitions. [2024-11-17 03:29:17,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 252 transitions, 917 flow [2024-11-17 03:29:17,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:29:17,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:29:17,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 661 transitions. [2024-11-17 03:29:17,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5954954954954955 [2024-11-17 03:29:17,181 INFO L175 Difference]: Start difference. First operand has 200 places, 186 transitions, 487 flow. Second operand 5 states and 661 transitions. [2024-11-17 03:29:17,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 252 transitions, 917 flow [2024-11-17 03:29:17,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 252 transitions, 881 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-11-17 03:29:17,187 INFO L231 Difference]: Finished difference. Result has 199 places, 186 transitions, 462 flow [2024-11-17 03:29:17,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=462, PETRI_PLACES=199, PETRI_TRANSITIONS=186} [2024-11-17 03:29:17,188 INFO L277 CegarLoopForPetriNet]: 177 programPoint places, 22 predicate places. [2024-11-17 03:29:17,188 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 186 transitions, 462 flow [2024-11-17 03:29:17,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.6) internal successors, (528), 5 states have internal predecessors, (528), 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) [2024-11-17 03:29:17,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:29:17,189 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:29:17,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 03:29:17,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:29:17,394 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-17 03:29:17,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:29:17,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1516785732, now seen corresponding path program 1 times [2024-11-17 03:29:17,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:29:17,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023360573] [2024-11-17 03:29:17,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:17,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:29:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:29:17,439 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:29:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:29:17,482 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:29:17,482 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:29:17,483 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (49 of 50 remaining) [2024-11-17 03:29:17,485 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 50 remaining) [2024-11-17 03:29:17,485 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 50 remaining) [2024-11-17 03:29:17,485 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 50 remaining) [2024-11-17 03:29:17,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 50 remaining) [2024-11-17 03:29:17,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (44 of 50 remaining) [2024-11-17 03:29:17,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 50 remaining) [2024-11-17 03:29:17,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 50 remaining) [2024-11-17 03:29:17,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 50 remaining) [2024-11-17 03:29:17,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 50 remaining) [2024-11-17 03:29:17,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 50 remaining) [2024-11-17 03:29:17,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 50 remaining) [2024-11-17 03:29:17,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 50 remaining) [2024-11-17 03:29:17,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 50 remaining) [2024-11-17 03:29:17,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 50 remaining) [2024-11-17 03:29:17,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 50 remaining) [2024-11-17 03:29:17,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 50 remaining) [2024-11-17 03:29:17,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 50 remaining) [2024-11-17 03:29:17,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 50 remaining) [2024-11-17 03:29:17,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 50 remaining) [2024-11-17 03:29:17,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 50 remaining) [2024-11-17 03:29:17,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 50 remaining) [2024-11-17 03:29:17,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 50 remaining) [2024-11-17 03:29:17,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 50 remaining) [2024-11-17 03:29:17,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (25 of 50 remaining) [2024-11-17 03:29:17,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 50 remaining) [2024-11-17 03:29:17,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 50 remaining) [2024-11-17 03:29:17,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK (22 of 50 remaining) [2024-11-17 03:29:17,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 50 remaining) [2024-11-17 03:29:17,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 50 remaining) [2024-11-17 03:29:17,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 50 remaining) [2024-11-17 03:29:17,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 50 remaining) [2024-11-17 03:29:17,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 50 remaining) [2024-11-17 03:29:17,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 50 remaining) [2024-11-17 03:29:17,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 50 remaining) [2024-11-17 03:29:17,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 50 remaining) [2024-11-17 03:29:17,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 50 remaining) [2024-11-17 03:29:17,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 50 remaining) [2024-11-17 03:29:17,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 50 remaining) [2024-11-17 03:29:17,499 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 50 remaining) [2024-11-17 03:29:17,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 50 remaining) [2024-11-17 03:29:17,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 50 remaining) [2024-11-17 03:29:17,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 50 remaining) [2024-11-17 03:29:17,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 50 remaining) [2024-11-17 03:29:17,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 50 remaining) [2024-11-17 03:29:17,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 50 remaining) [2024-11-17 03:29:17,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 50 remaining) [2024-11-17 03:29:17,501 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 50 remaining) [2024-11-17 03:29:17,501 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 50 remaining) [2024-11-17 03:29:17,501 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 50 remaining) [2024-11-17 03:29:17,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:29:17,502 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2024-11-17 03:29:17,505 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:29:17,505 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 03:29:17,555 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 03:29:17,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 291 transitions, 598 flow [2024-11-17 03:29:17,619 INFO L124 PetriNetUnfolderBase]: 126/594 cut-off events. [2024-11-17 03:29:17,620 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-17 03:29:17,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 594 events. 126/594 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3754 event pairs, 0 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 368. Up to 12 conditions per place. [2024-11-17 03:29:17,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 291 transitions, 598 flow [2024-11-17 03:29:17,638 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 291 transitions, 598 flow [2024-11-17 03:29:17,639 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:29:17,640 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;@7a7066eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:29:17,641 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-11-17 03:29:17,643 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:29:17,643 INFO L124 PetriNetUnfolderBase]: 3/12 cut-off events. [2024-11-17 03:29:17,643 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:29:17,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:29:17,643 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 03:29:17,644 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-17 03:29:17,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:29:17,644 INFO L85 PathProgramCache]: Analyzing trace with hash 273965423, now seen corresponding path program 1 times [2024-11-17 03:29:17,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:29:17,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660463544] [2024-11-17 03:29:17,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:17,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:29:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:29:17,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:29:17,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:29:17,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660463544] [2024-11-17 03:29:17,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660463544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:29:17,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:29:17,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:29:17,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79061375] [2024-11-17 03:29:17,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:29:17,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:29:17,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:29:17,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:29:17,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:29:17,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 291 [2024-11-17 03:29:17,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 291 transitions, 598 flow. Second operand has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 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) [2024-11-17 03:29:17,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:29:17,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 291 [2024-11-17 03:29:17,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:29:27,035 INFO L124 PetriNetUnfolderBase]: 46715/106769 cut-off events. [2024-11-17 03:29:27,035 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2024-11-17 03:29:27,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174356 conditions, 106769 events. 46715/106769 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 2966. Compared 1337529 event pairs, 41202 based on Foata normal form. 36295/131270 useless extension candidates. Maximal degree in co-relation 168294. Up to 67470 conditions per place. [2024-11-17 03:29:27,898 INFO L140 encePairwiseOnDemand]: 237/291 looper letters, 96 selfloop transitions, 0 changer transitions 0/233 dead transitions. [2024-11-17 03:29:27,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 233 transitions, 674 flow [2024-11-17 03:29:27,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:29:27,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:29:27,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 424 transitions. [2024-11-17 03:29:27,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7285223367697594 [2024-11-17 03:29:27,900 INFO L175 Difference]: Start difference. First operand has 232 places, 291 transitions, 598 flow. Second operand 2 states and 424 transitions. [2024-11-17 03:29:27,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 233 transitions, 674 flow [2024-11-17 03:29:27,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 233 transitions, 674 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:29:27,910 INFO L231 Difference]: Finished difference. Result has 229 places, 233 transitions, 482 flow [2024-11-17 03:29:27,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=482, PETRI_PLACES=229, PETRI_TRANSITIONS=233} [2024-11-17 03:29:27,914 INFO L277 CegarLoopForPetriNet]: 232 programPoint places, -3 predicate places. [2024-11-17 03:29:27,914 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 233 transitions, 482 flow [2024-11-17 03:29:27,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 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) [2024-11-17 03:29:27,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:29:27,915 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:29:27,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 03:29:27,915 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-17 03:29:27,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:29:27,916 INFO L85 PathProgramCache]: Analyzing trace with hash -12161143, now seen corresponding path program 1 times [2024-11-17 03:29:27,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:29:27,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238418742] [2024-11-17 03:29:27,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:27,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:29:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:29:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:29:27,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:29:27,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238418742] [2024-11-17 03:29:27,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238418742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:29:27,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:29:27,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:29:27,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558020548] [2024-11-17 03:29:27,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:29:27,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:29:27,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:29:27,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:29:27,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:29:27,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 291 [2024-11-17 03:29:27,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 233 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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) [2024-11-17 03:29:27,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:29:27,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 291 [2024-11-17 03:29:27,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:29:36,005 INFO L124 PetriNetUnfolderBase]: 46715/106771 cut-off events. [2024-11-17 03:29:36,006 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2024-11-17 03:29:36,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174361 conditions, 106771 events. 46715/106771 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 2966. Compared 1337231 event pairs, 41202 based on Foata normal form. 0/94976 useless extension candidates. Maximal degree in co-relation 174356. Up to 67471 conditions per place. [2024-11-17 03:29:36,852 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 96 selfloop transitions, 2 changer transitions 0/234 dead transitions. [2024-11-17 03:29:36,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 234 transitions, 680 flow [2024-11-17 03:29:36,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:29:36,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:29:36,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2024-11-17 03:29:36,856 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5807560137457045 [2024-11-17 03:29:36,856 INFO L175 Difference]: Start difference. First operand has 229 places, 233 transitions, 482 flow. Second operand 3 states and 507 transitions. [2024-11-17 03:29:36,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 234 transitions, 680 flow [2024-11-17 03:29:36,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 234 transitions, 680 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:29:36,864 INFO L231 Difference]: Finished difference. Result has 232 places, 234 transitions, 494 flow [2024-11-17 03:29:36,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=494, PETRI_PLACES=232, PETRI_TRANSITIONS=234} [2024-11-17 03:29:36,866 INFO L277 CegarLoopForPetriNet]: 232 programPoint places, 0 predicate places. [2024-11-17 03:29:36,866 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 234 transitions, 494 flow [2024-11-17 03:29:36,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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) [2024-11-17 03:29:36,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:29:36,867 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:29:36,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 03:29:36,867 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-17 03:29:36,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:29:36,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1298005911, now seen corresponding path program 1 times [2024-11-17 03:29:36,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:29:36,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883147608] [2024-11-17 03:29:36,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:36,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:29:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:29:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:29:36,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:29:36,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883147608] [2024-11-17 03:29:36,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883147608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:29:36,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543189845] [2024-11-17 03:29:36,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:36,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:29:36,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:29:36,925 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:29:36,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 03:29:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:29:37,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 03:29:37,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:29:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:29:37,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:29:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:29:37,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543189845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:29:37,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:29:37,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-17 03:29:37,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630925173] [2024-11-17 03:29:37,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:29:37,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 03:29:37,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:29:37,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 03:29:37,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-17 03:29:37,079 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 291 [2024-11-17 03:29:37,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 234 transitions, 494 flow. Second operand has 7 states, 7 states have (on average 137.42857142857142) internal successors, (962), 7 states have internal predecessors, (962), 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) [2024-11-17 03:29:37,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:29:37,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 291 [2024-11-17 03:29:37,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:29:45,251 INFO L124 PetriNetUnfolderBase]: 46715/106777 cut-off events. [2024-11-17 03:29:45,252 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2024-11-17 03:29:45,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174380 conditions, 106777 events. 46715/106777 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 2967. Compared 1337615 event pairs, 41202 based on Foata normal form. 0/94982 useless extension candidates. Maximal degree in co-relation 174373. Up to 67471 conditions per place. [2024-11-17 03:29:46,069 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 96 selfloop transitions, 5 changer transitions 0/237 dead transitions. [2024-11-17 03:29:46,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 237 transitions, 708 flow [2024-11-17 03:29:46,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:29:46,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:29:46,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 920 transitions. [2024-11-17 03:29:46,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5269186712485682 [2024-11-17 03:29:46,073 INFO L175 Difference]: Start difference. First operand has 232 places, 234 transitions, 494 flow. Second operand 6 states and 920 transitions. [2024-11-17 03:29:46,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 237 transitions, 708 flow [2024-11-17 03:29:46,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 237 transitions, 706 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:29:46,080 INFO L231 Difference]: Finished difference. Result has 239 places, 237 transitions, 528 flow [2024-11-17 03:29:46,080 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=528, PETRI_PLACES=239, PETRI_TRANSITIONS=237} [2024-11-17 03:29:46,081 INFO L277 CegarLoopForPetriNet]: 232 programPoint places, 7 predicate places. [2024-11-17 03:29:46,081 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 237 transitions, 528 flow [2024-11-17 03:29:46,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 137.42857142857142) internal successors, (962), 7 states have internal predecessors, (962), 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) [2024-11-17 03:29:46,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:29:46,082 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-11-17 03:29:46,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 03:29:46,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:29:46,283 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-17 03:29:46,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:29:46,284 INFO L85 PathProgramCache]: Analyzing trace with hash -760716535, now seen corresponding path program 2 times [2024-11-17 03:29:46,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:29:46,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396115593] [2024-11-17 03:29:46,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:29:46,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:29:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:29:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-17 03:29:46,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:29:46,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396115593] [2024-11-17 03:29:46,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396115593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:29:46,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:29:46,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:29:46,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523980507] [2024-11-17 03:29:46,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:29:46,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:29:46,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:29:46,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:29:46,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:29:46,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 291 [2024-11-17 03:29:46,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 237 transitions, 528 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 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) [2024-11-17 03:29:46,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:29:46,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 291 [2024-11-17 03:29:46,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand