./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/08_rand_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/08_rand_cas.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 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:07:08,316 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:07:08,379 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:07:08,383 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:07:08,384 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:07:08,402 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:07:08,403 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:07:08,403 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:07:08,404 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:07:08,404 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:07:08,405 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:07:08,405 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:07:08,406 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:07:08,407 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:07:08,407 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:07:08,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:07:08,408 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:07:08,411 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:07:08,411 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:07:08,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:07:08,412 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:07:08,412 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:07:08,412 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:07:08,415 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:07:08,415 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:07:08,416 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:07:08,416 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:07:08,416 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:07:08,416 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:07:08,417 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:07:08,417 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:07:08,417 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:07:08,417 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:07:08,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:07:08,418 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:07:08,418 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:07:08,418 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:07:08,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:07:08,418 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:07:08,419 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:07:08,419 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:07:08,420 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:07:08,420 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c [2024-11-17 03:07:08,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:07:08,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:07:08,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:07:08,719 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:07:08,720 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:07:08,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/08_rand_cas.i [2024-11-17 03:07:10,154 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:07:10,429 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:07:10,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i [2024-11-17 03:07:10,443 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92140feac/12522cc5b2e548b2819fedd9d11cb7d0/FLAG2d77a35e5 [2024-11-17 03:07:10,746 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92140feac/12522cc5b2e548b2819fedd9d11cb7d0 [2024-11-17 03:07:10,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:07:10,750 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:07:10,751 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:07:10,751 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:07:10,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:07:10,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:07:10" (1/1) ... [2024-11-17 03:07:10,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37947adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:10, skipping insertion in model container [2024-11-17 03:07:10,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:07:10" (1/1) ... [2024-11-17 03:07:10,811 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:07:11,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:07:11,233 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:07:11,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:07:11,311 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:07:11,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:11 WrapperNode [2024-11-17 03:07:11,312 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:07:11,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:07:11,313 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:07:11,314 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:07:11,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:11" (1/1) ... [2024-11-17 03:07:11,342 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:11" (1/1) ... [2024-11-17 03:07:11,369 INFO L138 Inliner]: procedures = 178, calls = 38, calls flagged for inlining = 16, calls inlined = 17, statements flattened = 147 [2024-11-17 03:07:11,371 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:07:11,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:07:11,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:07:11,372 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:07:11,382 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:11" (1/1) ... [2024-11-17 03:07:11,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:11" (1/1) ... [2024-11-17 03:07:11,390 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:11" (1/1) ... [2024-11-17 03:07:11,417 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 6, 3]. 55 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 4 writes are split as follows [0, 2, 2]. [2024-11-17 03:07:11,421 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:11" (1/1) ... [2024-11-17 03:07:11,423 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:11" (1/1) ... [2024-11-17 03:07:11,433 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:11" (1/1) ... [2024-11-17 03:07:11,438 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:11" (1/1) ... [2024-11-17 03:07:11,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:11" (1/1) ... [2024-11-17 03:07:11,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:11" (1/1) ... [2024-11-17 03:07:11,448 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:07:11,449 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:07:11,449 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:07:11,449 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:07:11,451 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:11" (1/1) ... [2024-11-17 03:07:11,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:07:11,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:07:11,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 03:07:11,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 03:07:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 03:07:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 03:07:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 03:07:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-17 03:07:11,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-17 03:07:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:07:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 03:07:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 03:07:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 03:07:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:07:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 03:07:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 03:07:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:07:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:07:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 03:07:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 03:07:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:07:11,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:07:11,545 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:07:11,722 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:07:11,728 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:07:11,966 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L728: havoc PseudoRandomUsingAtomic_nextInt_~#casret~0#1.base, PseudoRandomUsingAtomic_nextInt_~#casret~0#1.offset; [2024-11-17 03:07:11,966 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L728-1: SUMMARY for call ULTIMATE.dealloc(PseudoRandomUsingAtomic_nextInt_~#casret~0#1.base, PseudoRandomUsingAtomic_nextInt_~#casret~0#1.offset); srcloc: null [2024-11-17 03:07:12,005 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:07:12,005 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:07:12,209 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:07:12,209 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:07:12,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:07:12 BoogieIcfgContainer [2024-11-17 03:07:12,210 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:07:12,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:07:12,215 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:07:12,220 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:07:12,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:07:10" (1/3) ... [2024-11-17 03:07:12,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4202a38c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:07:12, skipping insertion in model container [2024-11-17 03:07:12,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:11" (2/3) ... [2024-11-17 03:07:12,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4202a38c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:07:12, skipping insertion in model container [2024-11-17 03:07:12,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:07:12" (3/3) ... [2024-11-17 03:07:12,225 INFO L112 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2024-11-17 03:07:12,241 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:07:12,242 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-17 03:07:12,242 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:07:12,330 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:07:12,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 85 transitions, 174 flow [2024-11-17 03:07:12,416 INFO L124 PetriNetUnfolderBase]: 17/92 cut-off events. [2024-11-17 03:07:12,416 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:07:12,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 92 events. 17/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 232 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2024-11-17 03:07:12,421 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 85 transitions, 174 flow [2024-11-17 03:07:12,425 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 85 transitions, 174 flow [2024-11-17 03:07:12,439 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:07:12,448 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;@6bdbd629, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:07:12,448 INFO L334 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2024-11-17 03:07:12,452 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:07:12,452 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:07:12,453 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:07:12,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:12,454 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:07:12,455 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-17 03:07:12,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:12,461 INFO L85 PathProgramCache]: Analyzing trace with hash 14079201, now seen corresponding path program 1 times [2024-11-17 03:07:12,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:12,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804914867] [2024-11-17 03:07:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:12,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:12,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:12,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804914867] [2024-11-17 03:07:12,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804914867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:12,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:12,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:07:12,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512566196] [2024-11-17 03:07:12,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:12,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:07:12,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:12,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:07:12,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:07:12,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-11-17 03:07:12,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 85 transitions, 174 flow. Second operand has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:12,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:12,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-11-17 03:07:12,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:12,873 INFO L124 PetriNetUnfolderBase]: 70/237 cut-off events. [2024-11-17 03:07:12,873 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:07:12,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 237 events. 70/237 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 991 event pairs, 58 based on Foata normal form. 61/247 useless extension candidates. Maximal degree in co-relation 379. Up to 156 conditions per place. [2024-11-17 03:07:12,882 INFO L140 encePairwiseOnDemand]: 70/85 looper letters, 34 selfloop transitions, 0 changer transitions 0/63 dead transitions. [2024-11-17 03:07:12,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 198 flow [2024-11-17 03:07:12,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:07:12,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:07:12,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 113 transitions. [2024-11-17 03:07:12,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6647058823529411 [2024-11-17 03:07:12,898 INFO L175 Difference]: Start difference. First operand has 72 places, 85 transitions, 174 flow. Second operand 2 states and 113 transitions. [2024-11-17 03:07:12,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 198 flow [2024-11-17 03:07:12,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:07:12,909 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 130 flow [2024-11-17 03:07:12,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-11-17 03:07:12,917 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -9 predicate places. [2024-11-17 03:07:12,917 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 130 flow [2024-11-17 03:07:12,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:12,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:12,918 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 03:07:12,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:07:12,918 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-17 03:07:12,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:12,919 INFO L85 PathProgramCache]: Analyzing trace with hash 522023169, now seen corresponding path program 1 times [2024-11-17 03:07:12,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:12,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759797618] [2024-11-17 03:07:12,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:12,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:07:12,954 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:07:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:07:13,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:07:13,031 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:07:13,036 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (39 of 40 remaining) [2024-11-17 03:07:13,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 40 remaining) [2024-11-17 03:07:13,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 40 remaining) [2024-11-17 03:07:13,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 40 remaining) [2024-11-17 03:07:13,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 40 remaining) [2024-11-17 03:07:13,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 40 remaining) [2024-11-17 03:07:13,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 40 remaining) [2024-11-17 03:07:13,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (32 of 40 remaining) [2024-11-17 03:07:13,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONMEMORY_LEAK (31 of 40 remaining) [2024-11-17 03:07:13,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 40 remaining) [2024-11-17 03:07:13,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 40 remaining) [2024-11-17 03:07:13,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 40 remaining) [2024-11-17 03:07:13,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 40 remaining) [2024-11-17 03:07:13,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 40 remaining) [2024-11-17 03:07:13,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 40 remaining) [2024-11-17 03:07:13,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 40 remaining) [2024-11-17 03:07:13,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 40 remaining) [2024-11-17 03:07:13,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 40 remaining) [2024-11-17 03:07:13,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 40 remaining) [2024-11-17 03:07:13,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONMEMORY_LEAK (20 of 40 remaining) [2024-11-17 03:07:13,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (19 of 40 remaining) [2024-11-17 03:07:13,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 40 remaining) [2024-11-17 03:07:13,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 40 remaining) [2024-11-17 03:07:13,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 40 remaining) [2024-11-17 03:07:13,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 40 remaining) [2024-11-17 03:07:13,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 40 remaining) [2024-11-17 03:07:13,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 40 remaining) [2024-11-17 03:07:13,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (12 of 40 remaining) [2024-11-17 03:07:13,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONMEMORY_LEAK (11 of 40 remaining) [2024-11-17 03:07:13,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 40 remaining) [2024-11-17 03:07:13,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 40 remaining) [2024-11-17 03:07:13,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 40 remaining) [2024-11-17 03:07:13,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 40 remaining) [2024-11-17 03:07:13,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 40 remaining) [2024-11-17 03:07:13,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 40 remaining) [2024-11-17 03:07:13,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 40 remaining) [2024-11-17 03:07:13,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 40 remaining) [2024-11-17 03:07:13,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 40 remaining) [2024-11-17 03:07:13,061 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 40 remaining) [2024-11-17 03:07:13,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONMEMORY_LEAK (0 of 40 remaining) [2024-11-17 03:07:13,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:07:13,062 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 03:07:13,085 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:07:13,089 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 03:07:13,181 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:07:13,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 160 transitions, 330 flow [2024-11-17 03:07:13,222 INFO L124 PetriNetUnfolderBase]: 33/175 cut-off events. [2024-11-17 03:07:13,222 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:07:13,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 175 events. 33/175 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 678 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 156. Up to 6 conditions per place. [2024-11-17 03:07:13,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 160 transitions, 330 flow [2024-11-17 03:07:13,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 160 transitions, 330 flow [2024-11-17 03:07:13,233 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:07:13,235 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;@6bdbd629, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:07:13,235 INFO L334 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2024-11-17 03:07:13,237 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:07:13,237 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:07:13,237 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:07:13,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:13,238 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:07:13,238 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-17 03:07:13,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:13,240 INFO L85 PathProgramCache]: Analyzing trace with hash 19004641, now seen corresponding path program 1 times [2024-11-17 03:07:13,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:13,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262615611] [2024-11-17 03:07:13,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:13,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:13,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:13,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262615611] [2024-11-17 03:07:13,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262615611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:13,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:13,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:07:13,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73090444] [2024-11-17 03:07:13,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:13,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:07:13,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:13,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:07:13,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:07:13,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 160 [2024-11-17 03:07:13,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 160 transitions, 330 flow. Second operand has 2 states, 2 states have (on average 61.0) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:13,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:13,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 160 [2024-11-17 03:07:13,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:14,693 INFO L124 PetriNetUnfolderBase]: 4972/10176 cut-off events. [2024-11-17 03:07:14,694 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-11-17 03:07:14,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17831 conditions, 10176 events. 4972/10176 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 89080 event pairs, 4408 based on Foata normal form. 2734/10220 useless extension candidates. Maximal degree in co-relation 11005. Up to 7560 conditions per place. [2024-11-17 03:07:14,771 INFO L140 encePairwiseOnDemand]: 132/160 looper letters, 65 selfloop transitions, 0 changer transitions 0/121 dead transitions. [2024-11-17 03:07:14,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 382 flow [2024-11-17 03:07:14,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:07:14,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:07:14,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 213 transitions. [2024-11-17 03:07:14,774 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.665625 [2024-11-17 03:07:14,775 INFO L175 Difference]: Start difference. First operand has 134 places, 160 transitions, 330 flow. Second operand 2 states and 213 transitions. [2024-11-17 03:07:14,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 382 flow [2024-11-17 03:07:14,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 121 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:07:14,779 INFO L231 Difference]: Finished difference. Result has 119 places, 121 transitions, 252 flow [2024-11-17 03:07:14,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=252, PETRI_PLACES=119, PETRI_TRANSITIONS=121} [2024-11-17 03:07:14,780 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, -15 predicate places. [2024-11-17 03:07:14,781 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 121 transitions, 252 flow [2024-11-17 03:07:14,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 61.0) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:14,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:14,781 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:07:14,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:07:14,782 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-17 03:07:14,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:14,783 INFO L85 PathProgramCache]: Analyzing trace with hash 184779131, now seen corresponding path program 1 times [2024-11-17 03:07:14,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:14,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818816913] [2024-11-17 03:07:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:14,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:14,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:14,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:14,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818816913] [2024-11-17 03:07:14,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818816913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:14,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:14,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:07:14,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698836225] [2024-11-17 03:07:14,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:14,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:07:14,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:14,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:07:14,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:07:14,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 160 [2024-11-17 03:07:14,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 121 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:14,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:14,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 160 [2024-11-17 03:07:14,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:16,051 INFO L124 PetriNetUnfolderBase]: 4272/8933 cut-off events. [2024-11-17 03:07:16,051 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-11-17 03:07:16,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15611 conditions, 8933 events. 4272/8933 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 76981 event pairs, 3102 based on Foata normal form. 0/6871 useless extension candidates. Maximal degree in co-relation 15606. Up to 5153 conditions per place. [2024-11-17 03:07:16,131 INFO L140 encePairwiseOnDemand]: 149/160 looper letters, 119 selfloop transitions, 3 changer transitions 0/176 dead transitions. [2024-11-17 03:07:16,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 176 transitions, 611 flow [2024-11-17 03:07:16,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:07:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:07:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2024-11-17 03:07:16,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-17 03:07:16,134 INFO L175 Difference]: Start difference. First operand has 119 places, 121 transitions, 252 flow. Second operand 3 states and 304 transitions. [2024-11-17 03:07:16,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 176 transitions, 611 flow [2024-11-17 03:07:16,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 176 transitions, 611 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:07:16,144 INFO L231 Difference]: Finished difference. Result has 122 places, 123 transitions, 285 flow [2024-11-17 03:07:16,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=122, PETRI_TRANSITIONS=123} [2024-11-17 03:07:16,147 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, -12 predicate places. [2024-11-17 03:07:16,147 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 123 transitions, 285 flow [2024-11-17 03:07:16,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:16,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:16,148 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:07:16,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:07:16,149 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-17 03:07:16,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:16,149 INFO L85 PathProgramCache]: Analyzing trace with hash 184779132, now seen corresponding path program 1 times [2024-11-17 03:07:16,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:16,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174220289] [2024-11-17 03:07:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:16,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:16,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:16,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:16,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174220289] [2024-11-17 03:07:16,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174220289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:16,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:16,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:07:16,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810421866] [2024-11-17 03:07:16,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:16,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:07:16,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:16,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:07:16,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:07:16,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 160 [2024-11-17 03:07:16,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 123 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:16,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:16,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 160 [2024-11-17 03:07:16,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:17,080 INFO L124 PetriNetUnfolderBase]: 3423/7336 cut-off events. [2024-11-17 03:07:17,081 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2024-11-17 03:07:17,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13024 conditions, 7336 events. 3423/7336 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 61054 event pairs, 3084 based on Foata normal form. 0/6015 useless extension candidates. Maximal degree in co-relation 13017. Up to 5255 conditions per place. [2024-11-17 03:07:17,201 INFO L140 encePairwiseOnDemand]: 151/160 looper letters, 60 selfloop transitions, 1 changer transitions 0/115 dead transitions. [2024-11-17 03:07:17,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 115 transitions, 391 flow [2024-11-17 03:07:17,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:07:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:07:17,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2024-11-17 03:07:17,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5020833333333333 [2024-11-17 03:07:17,206 INFO L175 Difference]: Start difference. First operand has 122 places, 123 transitions, 285 flow. Second operand 3 states and 241 transitions. [2024-11-17 03:07:17,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 115 transitions, 391 flow [2024-11-17 03:07:17,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 115 transitions, 388 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:07:17,214 INFO L231 Difference]: Finished difference. Result has 115 places, 115 transitions, 268 flow [2024-11-17 03:07:17,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=115, PETRI_TRANSITIONS=115} [2024-11-17 03:07:17,215 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, -19 predicate places. [2024-11-17 03:07:17,217 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 115 transitions, 268 flow [2024-11-17 03:07:17,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:17,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:17,218 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-17 03:07:17,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:07:17,219 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-17 03:07:17,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:17,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1356653697, now seen corresponding path program 1 times [2024-11-17 03:07:17,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:17,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445114810] [2024-11-17 03:07:17,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:17,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:07:17,234 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:07:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:07:17,244 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:07:17,245 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:07:17,245 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (58 of 59 remaining) [2024-11-17 03:07:17,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 59 remaining) [2024-11-17 03:07:17,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 59 remaining) [2024-11-17 03:07:17,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 59 remaining) [2024-11-17 03:07:17,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 59 remaining) [2024-11-17 03:07:17,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 59 remaining) [2024-11-17 03:07:17,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 59 remaining) [2024-11-17 03:07:17,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (51 of 59 remaining) [2024-11-17 03:07:17,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONMEMORY_LEAK (50 of 59 remaining) [2024-11-17 03:07:17,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 59 remaining) [2024-11-17 03:07:17,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 59 remaining) [2024-11-17 03:07:17,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 59 remaining) [2024-11-17 03:07:17,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 59 remaining) [2024-11-17 03:07:17,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 59 remaining) [2024-11-17 03:07:17,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 59 remaining) [2024-11-17 03:07:17,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 59 remaining) [2024-11-17 03:07:17,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 59 remaining) [2024-11-17 03:07:17,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 59 remaining) [2024-11-17 03:07:17,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 59 remaining) [2024-11-17 03:07:17,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONMEMORY_LEAK (39 of 59 remaining) [2024-11-17 03:07:17,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (38 of 59 remaining) [2024-11-17 03:07:17,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 59 remaining) [2024-11-17 03:07:17,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 59 remaining) [2024-11-17 03:07:17,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 59 remaining) [2024-11-17 03:07:17,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 59 remaining) [2024-11-17 03:07:17,248 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 59 remaining) [2024-11-17 03:07:17,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 59 remaining) [2024-11-17 03:07:17,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (31 of 59 remaining) [2024-11-17 03:07:17,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONMEMORY_LEAK (30 of 59 remaining) [2024-11-17 03:07:17,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 59 remaining) [2024-11-17 03:07:17,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 59 remaining) [2024-11-17 03:07:17,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 59 remaining) [2024-11-17 03:07:17,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 59 remaining) [2024-11-17 03:07:17,250 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 59 remaining) [2024-11-17 03:07:17,250 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 59 remaining) [2024-11-17 03:07:17,250 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 59 remaining) [2024-11-17 03:07:17,250 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 59 remaining) [2024-11-17 03:07:17,250 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 59 remaining) [2024-11-17 03:07:17,250 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 59 remaining) [2024-11-17 03:07:17,250 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONMEMORY_LEAK (19 of 59 remaining) [2024-11-17 03:07:17,251 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 59 remaining) [2024-11-17 03:07:17,251 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 59 remaining) [2024-11-17 03:07:17,251 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 59 remaining) [2024-11-17 03:07:17,251 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 59 remaining) [2024-11-17 03:07:17,251 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 59 remaining) [2024-11-17 03:07:17,251 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 59 remaining) [2024-11-17 03:07:17,251 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (12 of 59 remaining) [2024-11-17 03:07:17,252 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONMEMORY_LEAK (11 of 59 remaining) [2024-11-17 03:07:17,252 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 59 remaining) [2024-11-17 03:07:17,252 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 59 remaining) [2024-11-17 03:07:17,252 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 59 remaining) [2024-11-17 03:07:17,252 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 59 remaining) [2024-11-17 03:07:17,252 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 59 remaining) [2024-11-17 03:07:17,252 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 59 remaining) [2024-11-17 03:07:17,253 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 59 remaining) [2024-11-17 03:07:17,253 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 59 remaining) [2024-11-17 03:07:17,253 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 59 remaining) [2024-11-17 03:07:17,253 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 59 remaining) [2024-11-17 03:07:17,253 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONMEMORY_LEAK (0 of 59 remaining) [2024-11-17 03:07:17,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:07:17,254 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-17 03:07:17,254 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:07:17,254 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 03:07:17,339 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:07:17,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 235 transitions, 488 flow [2024-11-17 03:07:17,379 INFO L124 PetriNetUnfolderBase]: 49/258 cut-off events. [2024-11-17 03:07:17,379 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-17 03:07:17,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 258 events. 49/258 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1171 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 230. Up to 8 conditions per place. [2024-11-17 03:07:17,383 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 235 transitions, 488 flow [2024-11-17 03:07:17,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 235 transitions, 488 flow [2024-11-17 03:07:17,388 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:07:17,389 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;@6bdbd629, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:07:17,389 INFO L334 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2024-11-17 03:07:17,390 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:07:17,390 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:07:17,390 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:07:17,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:17,390 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:07:17,391 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2024-11-17 03:07:17,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:17,391 INFO L85 PathProgramCache]: Analyzing trace with hash 26238881, now seen corresponding path program 1 times [2024-11-17 03:07:17,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:17,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960605511] [2024-11-17 03:07:17,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:17,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:17,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:17,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:17,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960605511] [2024-11-17 03:07:17,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960605511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:17,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:17,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:07:17,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477365566] [2024-11-17 03:07:17,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:17,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:07:17,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:17,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:07:17,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:07:17,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 235 [2024-11-17 03:07:17,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 235 transitions, 488 flow. Second operand has 2 states, 2 states have (on average 89.0) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:17,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:17,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 235 [2024-11-17 03:07:17,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:50,371 INFO L124 PetriNetUnfolderBase]: 235423/397065 cut-off events. [2024-11-17 03:07:50,371 INFO L125 PetriNetUnfolderBase]: For 6990/6990 co-relation queries the response was YES. [2024-11-17 03:07:51,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714231 conditions, 397065 events. 235423/397065 cut-off events. For 6990/6990 co-relation queries the response was YES. Maximal size of possible extension queue 12199. Compared 4489905 event pairs, 213208 based on Foata normal form. 109615/391886 useless extension candidates. Maximal degree in co-relation 223162. Up to 313470 conditions per place. [2024-11-17 03:07:53,339 INFO L140 encePairwiseOnDemand]: 194/235 looper letters, 96 selfloop transitions, 0 changer transitions 0/179 dead transitions. [2024-11-17 03:07:53,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 179 transitions, 568 flow [2024-11-17 03:07:53,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:07:53,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:07:53,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 313 transitions. [2024-11-17 03:07:53,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6659574468085107 [2024-11-17 03:07:53,341 INFO L175 Difference]: Start difference. First operand has 196 places, 235 transitions, 488 flow. Second operand 2 states and 313 transitions. [2024-11-17 03:07:53,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 179 transitions, 568 flow [2024-11-17 03:07:53,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 179 transitions, 566 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-17 03:07:53,353 INFO L231 Difference]: Finished difference. Result has 175 places, 179 transitions, 374 flow [2024-11-17 03:07:53,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=374, PETRI_PLACES=175, PETRI_TRANSITIONS=179} [2024-11-17 03:07:53,354 INFO L277 CegarLoopForPetriNet]: 196 programPoint places, -21 predicate places. [2024-11-17 03:07:53,354 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 179 transitions, 374 flow [2024-11-17 03:07:53,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 89.0) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:53,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:53,355 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:07:53,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 03:07:53,355 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2024-11-17 03:07:53,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:53,356 INFO L85 PathProgramCache]: Analyzing trace with hash 763980508, now seen corresponding path program 1 times [2024-11-17 03:07:53,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:53,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752234832] [2024-11-17 03:07:53,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:53,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:53,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:53,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:53,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752234832] [2024-11-17 03:07:53,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752234832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:53,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:53,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:07:53,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295675619] [2024-11-17 03:07:53,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:53,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:07:53,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:53,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:07:53,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:07:53,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 235 [2024-11-17 03:07:53,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 179 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:53,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:53,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 235 [2024-11-17 03:07:53,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand