./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f 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_24-sound_lock_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 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:08:53,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:08:53,316 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:08:53,319 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:08:53,320 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:08:53,339 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:08:53,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:08:53,340 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:08:53,341 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:08:53,342 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:08:53,342 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:08:53,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:08:53,343 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:08:53,343 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:08:53,345 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:08:53,345 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:08:53,345 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:08:53,345 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:08:53,346 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:08:53,349 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:08:53,349 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:08:53,350 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:08:53,350 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:08:53,350 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:08:53,350 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:08:53,350 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:08:53,350 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:08:53,351 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:08:53,351 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:08:53,351 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:08:53,351 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:08:53,351 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:08:53,351 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:08:53,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:08:53,352 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:08:53,352 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:08:53,352 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:08:53,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:08:53,352 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:08:53,352 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:08:53,353 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:08:53,354 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:08:53,355 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 [2024-11-10 18:08:53,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:08:53,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:08:53,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:08:53,579 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:08:53,580 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:08:53,581 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2024-11-10 18:08:54,875 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:08:55,098 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:08:55,101 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2024-11-10 18:08:55,123 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7523b28db/f85297ff5d724b78a7275e5a157deb3e/FLAG3002bf973 [2024-11-10 18:08:55,136 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7523b28db/f85297ff5d724b78a7275e5a157deb3e [2024-11-10 18:08:55,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:08:55,139 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:08:55,140 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:08:55,140 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:08:55,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:08:55,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:08:55" (1/1) ... [2024-11-10 18:08:55,146 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e4251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:55, skipping insertion in model container [2024-11-10 18:08:55,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:08:55" (1/1) ... [2024-11-10 18:08:55,177 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:08:55,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:08:55,505 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:08:55,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:08:55,577 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:08:55,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:55 WrapperNode [2024-11-10 18:08:55,577 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:08:55,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:08:55,578 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:08:55,579 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:08:55,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:55" (1/1) ... [2024-11-10 18:08:55,598 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:55" (1/1) ... [2024-11-10 18:08:55,617 INFO L138 Inliner]: procedures = 171, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2024-11-10 18:08:55,617 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:08:55,618 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:08:55,618 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:08:55,618 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:08:55,626 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:55" (1/1) ... [2024-11-10 18:08:55,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:55" (1/1) ... [2024-11-10 18:08:55,635 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:55" (1/1) ... [2024-11-10 18:08:55,651 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 5, 10, 2]. 53 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 10, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-11-10 18:08:55,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:55" (1/1) ... [2024-11-10 18:08:55,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:55" (1/1) ... [2024-11-10 18:08:55,658 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:55" (1/1) ... [2024-11-10 18:08:55,659 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:55" (1/1) ... [2024-11-10 18:08:55,664 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:55" (1/1) ... [2024-11-10 18:08:55,665 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:55" (1/1) ... [2024-11-10 18:08:55,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:08:55,672 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:08:55,672 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:08:55,673 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:08:55,673 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:55" (1/1) ... [2024-11-10 18:08:55,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:08:55,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:08:55,714 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) [2024-11-10 18:08:55,723 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 [2024-11-10 18:08:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 18:08:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 18:08:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 18:08:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 18:08:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 18:08:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 18:08:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 18:08:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 18:08:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 18:08:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:08:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 18:08:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-10 18:08:55,763 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-10 18:08:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 18:08:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:08:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 18:08:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 18:08:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 18:08:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 18:08:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:08:55,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:08:55,765 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:08:55,889 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:08:55,891 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:08:56,062 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L710: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-10 18:08:56,062 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L710-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-10 18:08:56,093 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:08:56,094 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:08:56,249 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:08:56,249 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:08:56,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:08:56 BoogieIcfgContainer [2024-11-10 18:08:56,251 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:08:56,253 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:08:56,253 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:08:56,256 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:08:56,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:08:55" (1/3) ... [2024-11-10 18:08:56,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e675ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:08:56, skipping insertion in model container [2024-11-10 18:08:56,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:08:55" (2/3) ... [2024-11-10 18:08:56,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e675ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:08:56, skipping insertion in model container [2024-11-10 18:08:56,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:08:56" (3/3) ... [2024-11-10 18:08:56,259 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2024-11-10 18:08:56,273 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:08:56,274 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-10 18:08:56,274 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:08:56,322 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-10 18:08:56,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 69 transitions, 145 flow [2024-11-10 18:08:56,399 INFO L124 PetriNetUnfolderBase]: 19/107 cut-off events. [2024-11-10 18:08:56,400 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 18:08:56,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 107 events. 19/107 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 382 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2024-11-10 18:08:56,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 69 transitions, 145 flow [2024-11-10 18:08:56,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 69 transitions, 145 flow [2024-11-10 18:08:56,421 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:08:56,429 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;@2e407778, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:08:56,429 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-10 18:08:56,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:08:56,437 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:08:56,437 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:08:56,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:08:56,438 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:08:56,439 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:08:56,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:08:56,444 INFO L85 PathProgramCache]: Analyzing trace with hash 9790078, now seen corresponding path program 1 times [2024-11-10 18:08:56,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:08:56,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015783694] [2024-11-10 18:08:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:08:56,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:08:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:08:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:08:56,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:08:56,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015783694] [2024-11-10 18:08:56,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015783694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:08:56,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:08:56,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:08:56,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162903030] [2024-11-10 18:08:56,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:08:56,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:08:56,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:08:56,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:08:56,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:08:56,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 69 [2024-11-10 18:08:56,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 69 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-11-10 18:08:56,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:08:56,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 69 [2024-11-10 18:08:56,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:08:57,054 INFO L124 PetriNetUnfolderBase]: 127/454 cut-off events. [2024-11-10 18:08:57,054 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 18:08:57,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 454 events. 127/454 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2386 event pairs, 108 based on Foata normal form. 152/588 useless extension candidates. Maximal degree in co-relation 693. Up to 252 conditions per place. [2024-11-10 18:08:57,059 INFO L140 encePairwiseOnDemand]: 53/69 looper letters, 33 selfloop transitions, 2 changer transitions 1/63 dead transitions. [2024-11-10 18:08:57,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 205 flow [2024-11-10 18:08:57,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:08:57,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:08:57,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-11-10 18:08:57,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6618357487922706 [2024-11-10 18:08:57,071 INFO L175 Difference]: Start difference. First operand has 59 places, 69 transitions, 145 flow. Second operand 3 states and 137 transitions. [2024-11-10 18:08:57,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 205 flow [2024-11-10 18:08:57,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 205 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:08:57,077 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 117 flow [2024-11-10 18:08:57,080 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-11-10 18:08:57,085 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2024-11-10 18:08:57,085 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 117 flow [2024-11-10 18:08:57,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-11-10 18:08:57,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:08:57,086 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:08:57,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:08:57,087 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:08:57,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:08:57,088 INFO L85 PathProgramCache]: Analyzing trace with hash 9790079, now seen corresponding path program 1 times [2024-11-10 18:08:57,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:08:57,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919701286] [2024-11-10 18:08:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:08:57,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:08:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:08:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:08:57,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:08:57,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919701286] [2024-11-10 18:08:57,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919701286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:08:57,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:08:57,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:08:57,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116546171] [2024-11-10 18:08:57,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:08:57,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:08:57,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:08:57,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:08:57,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:08:57,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 69 [2024-11-10 18:08:57,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-11-10 18:08:57,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:08:57,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 69 [2024-11-10 18:08:57,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:08:57,359 INFO L124 PetriNetUnfolderBase]: 126/462 cut-off events. [2024-11-10 18:08:57,359 INFO L125 PetriNetUnfolderBase]: For 15/16 co-relation queries the response was YES. [2024-11-10 18:08:57,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 462 events. 126/462 cut-off events. For 15/16 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2358 event pairs, 117 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 732. Up to 270 conditions per place. [2024-11-10 18:08:57,366 INFO L140 encePairwiseOnDemand]: 65/69 looper letters, 35 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-11-10 18:08:57,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 211 flow [2024-11-10 18:08:57,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:08:57,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:08:57,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-10 18:08:57,369 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-11-10 18:08:57,369 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 117 flow. Second operand 3 states and 123 transitions. [2024-11-10 18:08:57,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 211 flow [2024-11-10 18:08:57,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:08:57,375 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 123 flow [2024-11-10 18:08:57,375 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-11-10 18:08:57,376 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2024-11-10 18:08:57,377 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 123 flow [2024-11-10 18:08:57,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-11-10 18:08:57,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:08:57,377 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-10 18:08:57,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:08:57,379 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:08:57,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:08:57,379 INFO L85 PathProgramCache]: Analyzing trace with hash 942089864, now seen corresponding path program 1 times [2024-11-10 18:08:57,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:08:57,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501718470] [2024-11-10 18:08:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:08:57,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:08:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:08:57,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:08:57,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:08:57,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501718470] [2024-11-10 18:08:57,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501718470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:08:57,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317552412] [2024-11-10 18:08:57,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:08:57,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:08:57,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:08:57,529 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) [2024-11-10 18:08:57,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:08:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:08:57,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 18:08:57,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:08:57,673 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 [2024-11-10 18:08:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:08:57,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:08:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:08:57,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317552412] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:08:57,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:08:57,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-10 18:08:57,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183884310] [2024-11-10 18:08:57,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:08:57,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 18:08:57,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:08:57,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 18:08:57,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-10 18:08:57,912 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 69 [2024-11-10 18:08:57,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 123 flow. Second operand has 9 states, 9 states have (on average 29.333333333333332) internal successors, (264), 9 states have internal predecessors, (264), 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) [2024-11-10 18:08:57,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:08:57,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 69 [2024-11-10 18:08:57,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:08:57,986 INFO L124 PetriNetUnfolderBase]: 27/101 cut-off events. [2024-11-10 18:08:57,986 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-10 18:08:57,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 101 events. 27/101 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 286 event pairs, 0 based on Foata normal form. 20/118 useless extension candidates. Maximal degree in co-relation 172. Up to 57 conditions per place. [2024-11-10 18:08:57,987 INFO L140 encePairwiseOnDemand]: 65/69 looper letters, 23 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-11-10 18:08:57,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 134 flow [2024-11-10 18:08:57,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:08:57,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:08:57,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-10 18:08:57,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-11-10 18:08:57,990 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 123 flow. Second operand 4 states and 135 transitions. [2024-11-10 18:08:57,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 134 flow [2024-11-10 18:08:57,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:08:57,992 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 60 flow [2024-11-10 18:08:57,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-11-10 18:08:57,993 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -27 predicate places. [2024-11-10 18:08:57,993 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 60 flow [2024-11-10 18:08:57,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.333333333333332) internal successors, (264), 9 states have internal predecessors, (264), 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) [2024-11-10 18:08:57,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:08:57,994 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2024-11-10 18:08:58,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 18:08:58,195 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 [2024-11-10 18:08:58,196 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:08:58,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:08:58,196 INFO L85 PathProgramCache]: Analyzing trace with hash -859985008, now seen corresponding path program 1 times [2024-11-10 18:08:58,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:08:58,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141440200] [2024-11-10 18:08:58,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:08:58,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:08:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:08:58,218 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:08:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:08:58,256 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:08:58,256 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:08:58,257 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-10 18:08:58,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-10 18:08:58,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-10 18:08:58,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-10 18:08:58,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-10 18:08:58,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-10 18:08:58,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-10 18:08:58,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:08:58,260 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-10 18:08:58,262 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 18:08:58,262 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 18:08:58,283 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 18:08:58,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 96 transitions, 208 flow [2024-11-10 18:08:58,298 INFO L124 PetriNetUnfolderBase]: 34/187 cut-off events. [2024-11-10 18:08:58,298 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 18:08:58,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 187 events. 34/187 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 743 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 111. Up to 8 conditions per place. [2024-11-10 18:08:58,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 96 transitions, 208 flow [2024-11-10 18:08:58,302 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 96 transitions, 208 flow [2024-11-10 18:08:58,303 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:08:58,305 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;@2e407778, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:08:58,305 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-10 18:08:58,307 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:08:58,307 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:08:58,307 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:08:58,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:08:58,307 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:08:58,307 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:08:58,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:08:58,307 INFO L85 PathProgramCache]: Analyzing trace with hash 12745342, now seen corresponding path program 1 times [2024-11-10 18:08:58,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:08:58,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562636401] [2024-11-10 18:08:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:08:58,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:08:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:08:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:08:58,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:08:58,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562636401] [2024-11-10 18:08:58,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562636401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:08:58,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:08:58,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:08:58,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395295315] [2024-11-10 18:08:58,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:08:58,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:08:58,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:08:58,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:08:58,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:08:58,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 96 [2024-11-10 18:08:58,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 96 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-11-10 18:08:58,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:08:58,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 96 [2024-11-10 18:08:58,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:08:58,969 INFO L124 PetriNetUnfolderBase]: 2802/5946 cut-off events. [2024-11-10 18:08:58,970 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-10 18:08:58,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10531 conditions, 5946 events. 2802/5946 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 46817 event pairs, 2394 based on Foata normal form. 2492/8225 useless extension candidates. Maximal degree in co-relation 7677. Up to 3889 conditions per place. [2024-11-10 18:08:59,001 INFO L140 encePairwiseOnDemand]: 74/96 looper letters, 53 selfloop transitions, 2 changer transitions 1/93 dead transitions. [2024-11-10 18:08:59,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 93 transitions, 314 flow [2024-11-10 18:08:59,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:08:59,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:08:59,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2024-11-10 18:08:59,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6909722222222222 [2024-11-10 18:08:59,006 INFO L175 Difference]: Start difference. First operand has 81 places, 96 transitions, 208 flow. Second operand 3 states and 199 transitions. [2024-11-10 18:08:59,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 93 transitions, 314 flow [2024-11-10 18:08:59,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 93 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:08:59,010 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 168 flow [2024-11-10 18:08:59,011 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2024-11-10 18:08:59,011 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -1 predicate places. [2024-11-10 18:08:59,012 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 168 flow [2024-11-10 18:08:59,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-11-10 18:08:59,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:08:59,012 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:08:59,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 18:08:59,012 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:08:59,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:08:59,016 INFO L85 PathProgramCache]: Analyzing trace with hash 12745343, now seen corresponding path program 1 times [2024-11-10 18:08:59,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:08:59,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111906175] [2024-11-10 18:08:59,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:08:59,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:08:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:08:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:08:59,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:08:59,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111906175] [2024-11-10 18:08:59,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111906175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:08:59,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:08:59,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:08:59,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446544595] [2024-11-10 18:08:59,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:08:59,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:08:59,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:08:59,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:08:59,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:08:59,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 96 [2024-11-10 18:08:59,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2024-11-10 18:08:59,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:08:59,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 96 [2024-11-10 18:08:59,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:08:59,650 INFO L124 PetriNetUnfolderBase]: 2783/6159 cut-off events. [2024-11-10 18:08:59,650 INFO L125 PetriNetUnfolderBase]: For 212/226 co-relation queries the response was YES. [2024-11-10 18:08:59,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10818 conditions, 6159 events. 2783/6159 cut-off events. For 212/226 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 50091 event pairs, 2763 based on Foata normal form. 1/5729 useless extension candidates. Maximal degree in co-relation 9950. Up to 4467 conditions per place. [2024-11-10 18:08:59,681 INFO L140 encePairwiseOnDemand]: 92/96 looper letters, 47 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-11-10 18:08:59,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 85 transitions, 288 flow [2024-11-10 18:08:59,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:08:59,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:08:59,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-11-10 18:08:59,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-11-10 18:08:59,683 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 168 flow. Second operand 3 states and 165 transitions. [2024-11-10 18:08:59,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 85 transitions, 288 flow [2024-11-10 18:08:59,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 85 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:08:59,692 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 178 flow [2024-11-10 18:08:59,692 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2024-11-10 18:08:59,693 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -1 predicate places. [2024-11-10 18:08:59,694 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 178 flow [2024-11-10 18:08:59,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2024-11-10 18:08:59,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:08:59,694 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-10 18:08:59,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 18:08:59,695 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:08:59,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:08:59,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1195328129, now seen corresponding path program 1 times [2024-11-10 18:08:59,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:08:59,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714360674] [2024-11-10 18:08:59,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:08:59,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:08:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:08:59,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:08:59,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:08:59,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714360674] [2024-11-10 18:08:59,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714360674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:08:59,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752823721] [2024-11-10 18:08:59,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:08:59,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:08:59,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:08:59,802 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) [2024-11-10 18:08:59,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 18:08:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:08:59,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 18:08:59,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:08:59,884 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 [2024-11-10 18:08:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:08:59,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:09:00,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:00,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752823721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:09:00,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:09:00,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-10 18:09:00,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505352230] [2024-11-10 18:09:00,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:09:00,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:09:00,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:00,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:09:00,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:09:00,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 96 [2024-11-10 18:09:00,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 39.42857142857143) internal successors, (276), 7 states have internal predecessors, (276), 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) [2024-11-10 18:09:00,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:00,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 96 [2024-11-10 18:09:00,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:00,682 INFO L124 PetriNetUnfolderBase]: 2692/6044 cut-off events. [2024-11-10 18:09:00,683 INFO L125 PetriNetUnfolderBase]: For 415/415 co-relation queries the response was YES. [2024-11-10 18:09:00,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10623 conditions, 6044 events. 2692/6044 cut-off events. For 415/415 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 50069 event pairs, 109 based on Foata normal form. 120/5848 useless extension candidates. Maximal degree in co-relation 10538. Up to 2919 conditions per place. [2024-11-10 18:09:00,721 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 84 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2024-11-10 18:09:00,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 123 transitions, 448 flow [2024-11-10 18:09:00,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:09:00,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:09:00,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 276 transitions. [2024-11-10 18:09:00,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-11-10 18:09:00,723 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 178 flow. Second operand 5 states and 276 transitions. [2024-11-10 18:09:00,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 123 transitions, 448 flow [2024-11-10 18:09:00,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 123 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:09:00,727 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 184 flow [2024-11-10 18:09:00,727 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-11-10 18:09:00,727 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2024-11-10 18:09:00,728 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 184 flow [2024-11-10 18:09:00,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.42857142857143) internal successors, (276), 7 states have internal predecessors, (276), 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) [2024-11-10 18:09:00,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:00,728 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1] [2024-11-10 18:09:00,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 18:09:00,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-10 18:09:00,934 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:09:00,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:00,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1676748369, now seen corresponding path program 1 times [2024-11-10 18:09:00,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:00,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62167684] [2024-11-10 18:09:00,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:00,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:09:00,952 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:09:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:09:00,972 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:09:00,973 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:09:00,973 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-10 18:09:00,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-10 18:09:00,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-10 18:09:00,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-10 18:09:00,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-10 18:09:00,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-10 18:09:00,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-10 18:09:00,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 18:09:00,976 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-10 18:09:00,976 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 18:09:00,976 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 18:09:01,004 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 18:09:01,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 123 transitions, 273 flow [2024-11-10 18:09:01,033 INFO L124 PetriNetUnfolderBase]: 54/294 cut-off events. [2024-11-10 18:09:01,036 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-10 18:09:01,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 294 events. 54/294 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1281 event pairs, 1 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 198. Up to 16 conditions per place. [2024-11-10 18:09:01,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 123 transitions, 273 flow [2024-11-10 18:09:01,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 123 transitions, 273 flow [2024-11-10 18:09:01,045 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:09:01,051 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;@2e407778, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:09:01,052 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-10 18:09:01,054 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:09:01,054 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:09:01,054 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:09:01,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:01,054 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:09:01,054 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:09:01,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:01,054 INFO L85 PathProgramCache]: Analyzing trace with hash 16531774, now seen corresponding path program 1 times [2024-11-10 18:09:01,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:01,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232778225] [2024-11-10 18:09:01,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:01,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:01,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:01,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232778225] [2024-11-10 18:09:01,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232778225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:09:01,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:09:01,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:09:01,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114200341] [2024-11-10 18:09:01,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:09:01,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:09:01,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:01,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:09:01,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:09:01,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 123 [2024-11-10 18:09:01,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 123 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:09:01,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:01,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 123 [2024-11-10 18:09:01,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:07,284 INFO L124 PetriNetUnfolderBase]: 44558/75955 cut-off events. [2024-11-10 18:09:07,285 INFO L125 PetriNetUnfolderBase]: For 1236/1236 co-relation queries the response was YES. [2024-11-10 18:09:07,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139188 conditions, 75955 events. 44558/75955 cut-off events. For 1236/1236 co-relation queries the response was YES. Maximal size of possible extension queue 1971. Compared 703783 event pairs, 37891 based on Foata normal form. 35640/109295 useless extension candidates. Maximal degree in co-relation 50689. Up to 53237 conditions per place. [2024-11-10 18:09:07,755 INFO L140 encePairwiseOnDemand]: 95/123 looper letters, 73 selfloop transitions, 2 changer transitions 1/123 dead transitions. [2024-11-10 18:09:07,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 123 transitions, 425 flow [2024-11-10 18:09:07,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:09:07,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:09:07,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2024-11-10 18:09:07,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7073170731707317 [2024-11-10 18:09:07,758 INFO L175 Difference]: Start difference. First operand has 103 places, 123 transitions, 273 flow. Second operand 3 states and 261 transitions. [2024-11-10 18:09:07,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 123 transitions, 425 flow [2024-11-10 18:09:07,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 123 transitions, 425 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:09:07,764 INFO L231 Difference]: Finished difference. Result has 102 places, 95 transitions, 221 flow [2024-11-10 18:09:07,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=102, PETRI_TRANSITIONS=95} [2024-11-10 18:09:07,765 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, -1 predicate places. [2024-11-10 18:09:07,765 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 95 transitions, 221 flow [2024-11-10 18:09:07,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:09:07,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:07,766 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:09:07,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 18:09:07,766 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:09:07,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:07,766 INFO L85 PathProgramCache]: Analyzing trace with hash 16531775, now seen corresponding path program 1 times [2024-11-10 18:09:07,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:07,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446032545] [2024-11-10 18:09:07,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:07,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:07,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:07,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446032545] [2024-11-10 18:09:07,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446032545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:09:07,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:09:07,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:09:07,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960399322] [2024-11-10 18:09:07,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:09:07,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:09:07,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:07,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:09:07,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:09:07,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2024-11-10 18:09:07,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 95 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2024-11-10 18:09:07,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:07,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2024-11-10 18:09:07,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:13,284 INFO L124 PetriNetUnfolderBase]: 43801/77090 cut-off events. [2024-11-10 18:09:13,285 INFO L125 PetriNetUnfolderBase]: For 2921/2921 co-relation queries the response was YES. [2024-11-10 18:09:13,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140449 conditions, 77090 events. 43801/77090 cut-off events. For 2921/2921 co-relation queries the response was YES. Maximal size of possible extension queue 2074. Compared 743151 event pairs, 28324 based on Foata normal form. 1/73389 useless extension candidates. Maximal degree in co-relation 128782. Up to 61215 conditions per place. [2024-11-10 18:09:14,055 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 58 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2024-11-10 18:09:14,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 106 transitions, 363 flow [2024-11-10 18:09:14,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:09:14,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:09:14,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 206 transitions. [2024-11-10 18:09:14,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5582655826558266 [2024-11-10 18:09:14,058 INFO L175 Difference]: Start difference. First operand has 102 places, 95 transitions, 221 flow. Second operand 3 states and 206 transitions. [2024-11-10 18:09:14,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 106 transitions, 363 flow [2024-11-10 18:09:14,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 106 transitions, 359 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:09:14,159 INFO L231 Difference]: Finished difference. Result has 102 places, 96 transitions, 231 flow [2024-11-10 18:09:14,160 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=102, PETRI_TRANSITIONS=96} [2024-11-10 18:09:14,160 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, -1 predicate places. [2024-11-10 18:09:14,160 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 96 transitions, 231 flow [2024-11-10 18:09:14,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2024-11-10 18:09:14,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:14,161 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-10 18:09:14,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 18:09:14,161 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:09:14,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:14,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1305276139, now seen corresponding path program 1 times [2024-11-10 18:09:14,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:14,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281412320] [2024-11-10 18:09:14,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:14,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:14,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:14,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281412320] [2024-11-10 18:09:14,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281412320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:09:14,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058240148] [2024-11-10 18:09:14,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:14,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:09:14,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:09:14,249 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) [2024-11-10 18:09:14,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 18:09:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:14,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 18:09:14,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:09:14,332 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 [2024-11-10 18:09:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:14,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:09:14,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:14,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058240148] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:09:14,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:09:14,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-10 18:09:14,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4293083] [2024-11-10 18:09:14,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:09:14,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 18:09:14,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:14,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 18:09:14,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-10 18:09:14,487 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 123 [2024-11-10 18:09:14,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 96 transitions, 231 flow. Second operand has 9 states, 9 states have (on average 49.333333333333336) internal successors, (444), 9 states have internal predecessors, (444), 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) [2024-11-10 18:09:14,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:14,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 123 [2024-11-10 18:09:14,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:09:15,787 INFO L124 PetriNetUnfolderBase]: 10557/18515 cut-off events. [2024-11-10 18:09:15,788 INFO L125 PetriNetUnfolderBase]: For 4047/4047 co-relation queries the response was YES. [2024-11-10 18:09:15,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35075 conditions, 18515 events. 10557/18515 cut-off events. For 4047/4047 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 150225 event pairs, 1696 based on Foata normal form. 2220/20589 useless extension candidates. Maximal degree in co-relation 31403. Up to 11100 conditions per place. [2024-11-10 18:09:15,894 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 92 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2024-11-10 18:09:15,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 128 transitions, 476 flow [2024-11-10 18:09:15,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:09:15,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:09:15,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 384 transitions. [2024-11-10 18:09:15,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5203252032520326 [2024-11-10 18:09:15,896 INFO L175 Difference]: Start difference. First operand has 102 places, 96 transitions, 231 flow. Second operand 6 states and 384 transitions. [2024-11-10 18:09:15,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 128 transitions, 476 flow [2024-11-10 18:09:15,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 128 transitions, 472 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 18:09:15,899 INFO L231 Difference]: Finished difference. Result has 80 places, 68 transitions, 168 flow [2024-11-10 18:09:15,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=80, PETRI_TRANSITIONS=68} [2024-11-10 18:09:15,900 INFO L277 CegarLoopForPetriNet]: 103 programPoint places, -23 predicate places. [2024-11-10 18:09:15,900 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 68 transitions, 168 flow [2024-11-10 18:09:15,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 49.333333333333336) internal successors, (444), 9 states have internal predecessors, (444), 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) [2024-11-10 18:09:15,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:15,901 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1] [2024-11-10 18:09:15,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 18:09:16,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:09:16,105 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:09:16,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:16,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1546347153, now seen corresponding path program 1 times [2024-11-10 18:09:16,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:16,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715963541] [2024-11-10 18:09:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:16,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:09:16,127 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:09:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:09:16,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:09:16,149 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:09:16,150 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-10 18:09:16,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-10 18:09:16,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-10 18:09:16,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-10 18:09:16,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-10 18:09:16,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-10 18:09:16,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-10 18:09:16,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 18:09:16,151 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-10 18:09:16,151 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 18:09:16,152 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 18:09:16,172 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 18:09:16,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 150 transitions, 340 flow [2024-11-10 18:09:16,196 INFO L124 PetriNetUnfolderBase]: 86/457 cut-off events. [2024-11-10 18:09:16,197 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-10 18:09:16,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 457 events. 86/457 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2147 event pairs, 6 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 318. Up to 32 conditions per place. [2024-11-10 18:09:16,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 150 transitions, 340 flow [2024-11-10 18:09:16,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 150 transitions, 340 flow [2024-11-10 18:09:16,206 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:09:16,206 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;@2e407778, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:09:16,206 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-10 18:09:16,207 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:09:16,207 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-10 18:09:16,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:09:16,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:09:16,207 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:09:16,208 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-10 18:09:16,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:09:16,208 INFO L85 PathProgramCache]: Analyzing trace with hash 21149374, now seen corresponding path program 1 times [2024-11-10 18:09:16,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:09:16,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140891268] [2024-11-10 18:09:16,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:09:16,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:09:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:09:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:09:16,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:09:16,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140891268] [2024-11-10 18:09:16,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140891268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:09:16,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:09:16,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:09:16,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115270044] [2024-11-10 18:09:16,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:09:16,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:09:16,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:09:16,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:09:16,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:09:16,243 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 150 [2024-11-10 18:09:16,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 150 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2024-11-10 18:09:16,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:09:16,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 150 [2024-11-10 18:09:16,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand