./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/04_incdec_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/04_incdec_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 a9295efc0d8bacfc5fb202511f0d3721ae5554ffb4def47cf5dbf45088356869 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:56:59,274 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:56:59,317 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 00:56:59,323 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:56:59,325 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:56:59,347 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:56:59,349 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:56:59,349 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:56:59,349 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:56:59,350 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:56:59,350 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:56:59,350 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:56:59,351 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:56:59,351 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:56:59,351 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:56:59,351 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:56:59,352 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:56:59,352 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:56:59,352 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:56:59,352 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:56:59,352 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:56:59,352 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:56:59,352 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:56:59,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:56:59,352 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:56:59,352 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:56:59,352 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:56:59,352 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:56:59,352 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:56:59,353 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:56:59,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:56:59,353 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:56:59,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:56:59,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:56:59,353 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:56:59,354 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:56:59,354 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 00:56:59,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 00:56:59,354 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:56:59,354 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:56:59,354 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:56:59,354 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:56:59,354 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> a9295efc0d8bacfc5fb202511f0d3721ae5554ffb4def47cf5dbf45088356869 [2025-03-09 00:56:59,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:56:59,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:56:59,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:56:59,612 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:56:59,612 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:56:59,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2025-03-09 00:57:00,771 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3de5d780a/e088f68cefb74d37b3d6c75b7729f468/FLAGb66263309 [2025-03-09 00:57:01,044 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:57:01,045 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2025-03-09 00:57:01,058 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3de5d780a/e088f68cefb74d37b3d6c75b7729f468/FLAGb66263309 [2025-03-09 00:57:01,342 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3de5d780a/e088f68cefb74d37b3d6c75b7729f468 [2025-03-09 00:57:01,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:57:01,345 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:57:01,346 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:57:01,346 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:57:01,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:57:01,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:57:01" (1/1) ... [2025-03-09 00:57:01,350 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72dd0110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:57:01, skipping insertion in model container [2025-03-09 00:57:01,350 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:57:01" (1/1) ... [2025-03-09 00:57:01,381 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:57:01,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:57:01,608 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 00:57:01,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:57:01,658 INFO L204 MainTranslator]: Completed translation [2025-03-09 00:57:01,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:57:01 WrapperNode [2025-03-09 00:57:01,659 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:57:01,660 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 00:57:01,660 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 00:57:01,660 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 00:57:01,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:57:01" (1/1) ... [2025-03-09 00:57:01,671 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:57:01" (1/1) ... [2025-03-09 00:57:01,685 INFO L138 Inliner]: procedures = 174, calls = 46, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 159 [2025-03-09 00:57:01,686 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 00:57:01,686 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 00:57:01,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 00:57:01,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 00:57:01,692 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:57:01" (1/1) ... [2025-03-09 00:57:01,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:57:01" (1/1) ... [2025-03-09 00:57:01,694 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:57:01" (1/1) ... [2025-03-09 00:57:01,704 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 6, 9, 6]. 39 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [2, 0, 1, 2]. The 8 writes are split as follows [0, 4, 2, 2]. [2025-03-09 00:57:01,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:57:01" (1/1) ... [2025-03-09 00:57:01,705 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:57:01" (1/1) ... [2025-03-09 00:57:01,709 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:57:01" (1/1) ... [2025-03-09 00:57:01,710 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:57:01" (1/1) ... [2025-03-09 00:57:01,713 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:57:01" (1/1) ... [2025-03-09 00:57:01,714 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:57:01" (1/1) ... [2025-03-09 00:57:01,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 00:57:01,721 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 00:57:01,724 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 00:57:01,725 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 00:57:01,725 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:57:01" (1/1) ... [2025-03-09 00:57:01,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:57:01,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:57:01,754 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) [2025-03-09 00:57:01,756 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 [2025-03-09 00:57:01,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 00:57:01,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 00:57:01,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-09 00:57:01,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-09 00:57:01,775 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-09 00:57:01,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-09 00:57:01,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 00:57:01,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 00:57:01,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-09 00:57:01,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-09 00:57:01,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 00:57:01,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 00:57:01,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-09 00:57:01,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 00:57:01,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 00:57:01,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 00:57:01,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-09 00:57:01,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-09 00:57:01,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 00:57:01,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 00:57:01,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 00:57:01,776 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 00:57:01,903 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 00:57:01,904 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 00:57:02,257 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: havoc dec_~#dec__casret~0#1.base, dec_~#dec__casret~0#1.offset; [2025-03-09 00:57:02,257 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L731-1: SUMMARY for call ULTIMATE.dealloc(dec_~#dec__casret~0#1.base, dec_~#dec__casret~0#1.offset); srcloc: null [2025-03-09 00:57:02,258 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L711: havoc inc_~#inc__casret~0#1.base, inc_~#inc__casret~0#1.offset; [2025-03-09 00:57:02,258 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L711-1: SUMMARY for call ULTIMATE.dealloc(inc_~#inc__casret~0#1.base, inc_~#inc__casret~0#1.offset); srcloc: null [2025-03-09 00:57:02,288 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 00:57:02,288 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 00:57:02,588 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 00:57:02,589 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 00:57:02,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:57:02 BoogieIcfgContainer [2025-03-09 00:57:02,590 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 00:57:02,592 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 00:57:02,592 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 00:57:02,595 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 00:57:02,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 12:57:01" (1/3) ... [2025-03-09 00:57:02,595 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc06de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:57:02, skipping insertion in model container [2025-03-09 00:57:02,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:57:01" (2/3) ... [2025-03-09 00:57:02,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc06de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:57:02, skipping insertion in model container [2025-03-09 00:57:02,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:57:02" (3/3) ... [2025-03-09 00:57:02,597 INFO L128 eAbstractionObserver]: Analyzing ICFG 04_incdec_cas.i [2025-03-09 00:57:02,609 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 00:57:02,610 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04_incdec_cas.i that has 2 procedures, 65 locations, 1 initial locations, 3 loop locations, and 39 error locations. [2025-03-09 00:57:02,610 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 00:57:02,704 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 00:57:02,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 74 transitions, 152 flow [2025-03-09 00:57:02,796 INFO L124 PetriNetUnfolderBase]: 9/78 cut-off events. [2025-03-09 00:57:02,805 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 00:57:02,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 78 events. 9/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 388 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2025-03-09 00:57:02,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 74 transitions, 152 flow [2025-03-09 00:57:02,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 74 transitions, 152 flow [2025-03-09 00:57:02,829 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:57:02,850 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;@3497a71a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:57:02,850 INFO L334 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2025-03-09 00:57:02,855 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 00:57:02,855 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-09 00:57:02,855 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 00:57:02,855 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:57:02,856 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 00:57:02,856 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2025-03-09 00:57:02,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:57:02,869 INFO L85 PathProgramCache]: Analyzing trace with hash 522387, now seen corresponding path program 1 times [2025-03-09 00:57:02,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:57:02,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789362183] [2025-03-09 00:57:02,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:57:02,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:57:02,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:57:02,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:57:02,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:57:02,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:57:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:57:03,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:57:03,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789362183] [2025-03-09 00:57:03,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789362183] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:57:03,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:57:03,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:57:03,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546989760] [2025-03-09 00:57:03,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:57:03,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-09 00:57:03,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:57:03,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-09 00:57:03,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-09 00:57:03,061 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 74 [2025-03-09 00:57:03,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 74 transitions, 152 flow. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2025-03-09 00:57:03,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:57:03,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 74 [2025-03-09 00:57:03,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:57:03,284 INFO L124 PetriNetUnfolderBase]: 115/281 cut-off events. [2025-03-09 00:57:03,285 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 00:57:03,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 281 events. 115/281 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1356 event pairs, 94 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 534. Up to 262 conditions per place. [2025-03-09 00:57:03,292 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 58 selfloop transitions, 0 changer transitions 0/65 dead transitions. [2025-03-09 00:57:03,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 250 flow [2025-03-09 00:57:03,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-09 00:57:03,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-09 00:57:03,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 81 transitions. [2025-03-09 00:57:03,309 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5472972972972973 [2025-03-09 00:57:03,311 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 152 flow. Second operand 2 states and 81 transitions. [2025-03-09 00:57:03,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 250 flow [2025-03-09 00:57:03,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 65 transitions, 250 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 00:57:03,318 INFO L231 Difference]: Finished difference. Result has 62 places, 65 transitions, 134 flow [2025-03-09 00:57:03,320 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=65} [2025-03-09 00:57:03,325 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2025-03-09 00:57:03,325 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 65 transitions, 134 flow [2025-03-09 00:57:03,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2025-03-09 00:57:03,325 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:57:03,325 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-09 00:57:03,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 00:57:03,326 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2025-03-09 00:57:03,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:57:03,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1611991351, now seen corresponding path program 1 times [2025-03-09 00:57:03,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:57:03,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459063513] [2025-03-09 00:57:03,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:57:03,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:57:03,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 00:57:03,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 00:57:03,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:57:03,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 00:57:03,359 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 00:57:03,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 00:57:03,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 00:57:03,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:57:03,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 00:57:03,393 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 00:57:03,393 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 00:57:03,395 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (77 of 78 remaining) [2025-03-09 00:57:03,397 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 78 remaining) [2025-03-09 00:57:03,397 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 78 remaining) [2025-03-09 00:57:03,397 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (68 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (63 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 78 remaining) [2025-03-09 00:57:03,398 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (38 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (29 of 78 remaining) [2025-03-09 00:57:03,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 78 remaining) [2025-03-09 00:57:03,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 78 remaining) [2025-03-09 00:57:03,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 78 remaining) [2025-03-09 00:57:03,401 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 78 remaining) [2025-03-09 00:57:03,401 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (24 of 78 remaining) [2025-03-09 00:57:03,401 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 78 remaining) [2025-03-09 00:57:03,401 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 78 remaining) [2025-03-09 00:57:03,401 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 78 remaining) [2025-03-09 00:57:03,402 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 78 remaining) [2025-03-09 00:57:03,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 78 remaining) [2025-03-09 00:57:03,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 78 remaining) [2025-03-09 00:57:03,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 78 remaining) [2025-03-09 00:57:03,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 78 remaining) [2025-03-09 00:57:03,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 78 remaining) [2025-03-09 00:57:03,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 78 remaining) [2025-03-09 00:57:03,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 78 remaining) [2025-03-09 00:57:03,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 78 remaining) [2025-03-09 00:57:03,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 78 remaining) [2025-03-09 00:57:03,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 78 remaining) [2025-03-09 00:57:03,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 78 remaining) [2025-03-09 00:57:03,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 78 remaining) [2025-03-09 00:57:03,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 78 remaining) [2025-03-09 00:57:03,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 78 remaining) [2025-03-09 00:57:03,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 78 remaining) [2025-03-09 00:57:03,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 78 remaining) [2025-03-09 00:57:03,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 78 remaining) [2025-03-09 00:57:03,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 78 remaining) [2025-03-09 00:57:03,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 78 remaining) [2025-03-09 00:57:03,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 78 remaining) [2025-03-09 00:57:03,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 00:57:03,404 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-09 00:57:03,406 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 00:57:03,406 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-09 00:57:03,557 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 00:57:03,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 141 transitions, 292 flow [2025-03-09 00:57:03,593 INFO L124 PetriNetUnfolderBase]: 18/150 cut-off events. [2025-03-09 00:57:03,597 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 00:57:03,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 150 events. 18/150 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 905 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 137. Up to 3 conditions per place. [2025-03-09 00:57:03,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 141 transitions, 292 flow [2025-03-09 00:57:03,603 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 141 transitions, 292 flow [2025-03-09 00:57:03,605 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:57:03,605 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;@3497a71a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:57:03,606 INFO L334 AbstractCegarLoop]: Starting to check reachability of 116 error locations. [2025-03-09 00:57:03,607 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 00:57:03,608 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-09 00:57:03,608 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 00:57:03,609 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:57:03,609 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 00:57:03,609 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-09 00:57:03,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:57:03,609 INFO L85 PathProgramCache]: Analyzing trace with hash 662400, now seen corresponding path program 1 times [2025-03-09 00:57:03,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:57:03,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264151224] [2025-03-09 00:57:03,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:57:03,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:57:03,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:57:03,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:57:03,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:57:03,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:57:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:57:03,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:57:03,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264151224] [2025-03-09 00:57:03,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264151224] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:57:03,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:57:03,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:57:03,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666658414] [2025-03-09 00:57:03,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:57:03,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-09 00:57:03,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:57:03,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-09 00:57:03,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-09 00:57:03,648 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 141 [2025-03-09 00:57:03,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 141 transitions, 292 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2025-03-09 00:57:03,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:57:03,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 141 [2025-03-09 00:57:03,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:57:05,598 INFO L124 PetriNetUnfolderBase]: 13411/21211 cut-off events. [2025-03-09 00:57:05,598 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2025-03-09 00:57:05,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41830 conditions, 21211 events. 13411/21211 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 1328. Compared 152044 event pairs, 11374 based on Foata normal form. 0/9844 useless extension candidates. Maximal degree in co-relation 20232. Up to 20470 conditions per place. [2025-03-09 00:57:05,702 INFO L140 encePairwiseOnDemand]: 128/141 looper letters, 113 selfloop transitions, 0 changer transitions 0/126 dead transitions. [2025-03-09 00:57:05,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 126 transitions, 488 flow [2025-03-09 00:57:05,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-09 00:57:05,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-09 00:57:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 154 transitions. [2025-03-09 00:57:05,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2025-03-09 00:57:05,713 INFO L175 Difference]: Start difference. First operand has 128 places, 141 transitions, 292 flow. Second operand 2 states and 154 transitions. [2025-03-09 00:57:05,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 126 transitions, 488 flow [2025-03-09 00:57:05,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 126 transitions, 488 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 00:57:05,715 INFO L231 Difference]: Finished difference. Result has 118 places, 126 transitions, 262 flow [2025-03-09 00:57:05,715 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=262, PETRI_PLACES=118, PETRI_TRANSITIONS=126} [2025-03-09 00:57:05,716 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -10 predicate places. [2025-03-09 00:57:05,716 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 126 transitions, 262 flow [2025-03-09 00:57:05,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2025-03-09 00:57:05,716 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:57:05,716 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-09 00:57:05,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 00:57:05,716 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-09 00:57:05,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:57:05,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1733656538, now seen corresponding path program 1 times [2025-03-09 00:57:05,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:57:05,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518584398] [2025-03-09 00:57:05,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:57:05,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:57:05,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 00:57:05,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 00:57:05,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:57:05,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:57:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:57:05,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:57:05,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518584398] [2025-03-09 00:57:05,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518584398] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:57:05,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:57:05,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:57:05,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784442352] [2025-03-09 00:57:05,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:57:05,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:57:05,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:57:05,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:57:05,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:57:05,898 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 141 [2025-03-09 00:57:05,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 126 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2025-03-09 00:57:05,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:57:05,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 141 [2025-03-09 00:57:05,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:57:07,669 INFO L124 PetriNetUnfolderBase]: 12049/19219 cut-off events. [2025-03-09 00:57:07,669 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2025-03-09 00:57:07,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37829 conditions, 19219 events. 12049/19219 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 139424 event pairs, 7200 based on Foata normal form. 0/9874 useless extension candidates. Maximal degree in co-relation 37824. Up to 12476 conditions per place. [2025-03-09 00:57:07,771 INFO L140 encePairwiseOnDemand]: 80/141 looper letters, 241 selfloop transitions, 57 changer transitions 0/311 dead transitions. [2025-03-09 00:57:07,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 311 transitions, 1233 flow [2025-03-09 00:57:07,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:57:07,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 00:57:07,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 378 transitions. [2025-03-09 00:57:07,773 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6702127659574468 [2025-03-09 00:57:07,773 INFO L175 Difference]: Start difference. First operand has 118 places, 126 transitions, 262 flow. Second operand 4 states and 378 transitions. [2025-03-09 00:57:07,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 311 transitions, 1233 flow [2025-03-09 00:57:07,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 311 transitions, 1233 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 00:57:07,778 INFO L231 Difference]: Finished difference. Result has 124 places, 182 transitions, 746 flow [2025-03-09 00:57:07,778 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=746, PETRI_PLACES=124, PETRI_TRANSITIONS=182} [2025-03-09 00:57:07,779 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -4 predicate places. [2025-03-09 00:57:07,779 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 182 transitions, 746 flow [2025-03-09 00:57:07,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2025-03-09 00:57:07,779 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:57:07,779 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-09 00:57:07,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 00:57:07,779 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-09 00:57:07,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:57:07,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1733656537, now seen corresponding path program 1 times [2025-03-09 00:57:07,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:57:07,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511053765] [2025-03-09 00:57:07,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:57:07,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:57:07,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 00:57:07,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 00:57:07,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:57:07,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:57:07,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:57:07,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:57:07,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511053765] [2025-03-09 00:57:07,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511053765] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:57:07,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:57:07,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:57:07,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804628189] [2025-03-09 00:57:07,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:57:07,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:57:07,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:57:07,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:57:07,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:57:07,972 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 141 [2025-03-09 00:57:07,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 182 transitions, 746 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2025-03-09 00:57:07,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:57:07,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 141 [2025-03-09 00:57:07,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:57:09,041 INFO L124 PetriNetUnfolderBase]: 9271/14803 cut-off events. [2025-03-09 00:57:09,041 INFO L125 PetriNetUnfolderBase]: For 2040/2040 co-relation queries the response was YES. [2025-03-09 00:57:09,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36532 conditions, 14803 events. 9271/14803 cut-off events. For 2040/2040 co-relation queries the response was YES. Maximal size of possible extension queue 1013. Compared 103756 event pairs, 5478 based on Foata normal form. 972/10192 useless extension candidates. Maximal degree in co-relation 36524. Up to 8972 conditions per place. [2025-03-09 00:57:09,119 INFO L140 encePairwiseOnDemand]: 120/141 looper letters, 221 selfloop transitions, 9 changer transitions 0/243 dead transitions. [2025-03-09 00:57:09,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 243 transitions, 1413 flow [2025-03-09 00:57:09,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:57:09,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 00:57:09,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2025-03-09 00:57:09,122 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4645390070921986 [2025-03-09 00:57:09,122 INFO L175 Difference]: Start difference. First operand has 124 places, 182 transitions, 746 flow. Second operand 4 states and 262 transitions. [2025-03-09 00:57:09,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 243 transitions, 1413 flow [2025-03-09 00:57:09,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 243 transitions, 1413 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 00:57:09,142 INFO L231 Difference]: Finished difference. Result has 115 places, 170 transitions, 740 flow [2025-03-09 00:57:09,144 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=740, PETRI_PLACES=115, PETRI_TRANSITIONS=170} [2025-03-09 00:57:09,145 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -13 predicate places. [2025-03-09 00:57:09,145 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 170 transitions, 740 flow [2025-03-09 00:57:09,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2025-03-09 00:57:09,145 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:57:09,145 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:57:09,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 00:57:09,146 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-09 00:57:09,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:57:09,146 INFO L85 PathProgramCache]: Analyzing trace with hash 403403192, now seen corresponding path program 1 times [2025-03-09 00:57:09,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:57:09,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477177053] [2025-03-09 00:57:09,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:57:09,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:57:09,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:57:09,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:57:09,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:57:09,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:57:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:57:09,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:57:09,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477177053] [2025-03-09 00:57:09,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477177053] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:57:09,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:57:09,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:57:09,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404528382] [2025-03-09 00:57:09,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:57:09,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:57:09,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:57:09,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:57:09,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:57:09,266 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 141 [2025-03-09 00:57:09,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 170 transitions, 740 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2025-03-09 00:57:09,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:57:09,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 141 [2025-03-09 00:57:09,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:57:10,924 INFO L124 PetriNetUnfolderBase]: 15093/23940 cut-off events. [2025-03-09 00:57:10,924 INFO L125 PetriNetUnfolderBase]: For 5988/5988 co-relation queries the response was YES. [2025-03-09 00:57:10,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60565 conditions, 23940 events. 15093/23940 cut-off events. For 5988/5988 co-relation queries the response was YES. Maximal size of possible extension queue 1348. Compared 176916 event pairs, 4626 based on Foata normal form. 213/15435 useless extension candidates. Maximal degree in co-relation 60556. Up to 14584 conditions per place. [2025-03-09 00:57:11,031 INFO L140 encePairwiseOnDemand]: 128/141 looper letters, 405 selfloop transitions, 35 changer transitions 0/453 dead transitions. [2025-03-09 00:57:11,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 453 transitions, 2898 flow [2025-03-09 00:57:11,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:57:11,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 00:57:11,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 354 transitions. [2025-03-09 00:57:11,034 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2025-03-09 00:57:11,034 INFO L175 Difference]: Start difference. First operand has 115 places, 170 transitions, 740 flow. Second operand 5 states and 354 transitions. [2025-03-09 00:57:11,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 453 transitions, 2898 flow [2025-03-09 00:57:11,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 453 transitions, 2872 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 00:57:11,066 INFO L231 Difference]: Finished difference. Result has 120 places, 204 transitions, 1084 flow [2025-03-09 00:57:11,066 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1084, PETRI_PLACES=120, PETRI_TRANSITIONS=204} [2025-03-09 00:57:11,068 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -8 predicate places. [2025-03-09 00:57:11,068 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 204 transitions, 1084 flow [2025-03-09 00:57:11,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2025-03-09 00:57:11,068 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:57:11,068 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:57:11,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 00:57:11,072 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-09 00:57:11,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:57:11,072 INFO L85 PathProgramCache]: Analyzing trace with hash 403437092, now seen corresponding path program 1 times [2025-03-09 00:57:11,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:57:11,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993179056] [2025-03-09 00:57:11,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:57:11,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:57:11,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:57:11,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:57:11,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:57:11,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:57:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:57:11,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:57:11,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993179056] [2025-03-09 00:57:11,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993179056] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:57:11,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:57:11,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:57:11,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876793490] [2025-03-09 00:57:11,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:57:11,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:57:11,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:57:11,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:57:11,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:57:11,162 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 141 [2025-03-09 00:57:11,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 204 transitions, 1084 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2025-03-09 00:57:11,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:57:11,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 141 [2025-03-09 00:57:11,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:57:13,537 INFO L124 PetriNetUnfolderBase]: 15486/24289 cut-off events. [2025-03-09 00:57:13,538 INFO L125 PetriNetUnfolderBase]: For 6682/6682 co-relation queries the response was YES. [2025-03-09 00:57:13,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66338 conditions, 24289 events. 15486/24289 cut-off events. For 6682/6682 co-relation queries the response was YES. Maximal size of possible extension queue 1332. Compared 178767 event pairs, 5802 based on Foata normal form. 0/16864 useless extension candidates. Maximal degree in co-relation 66326. Up to 14505 conditions per place. [2025-03-09 00:57:13,643 INFO L140 encePairwiseOnDemand]: 128/141 looper letters, 248 selfloop transitions, 17 changer transitions 0/276 dead transitions. [2025-03-09 00:57:13,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 276 transitions, 1925 flow [2025-03-09 00:57:13,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:57:13,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 00:57:13,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 206 transitions. [2025-03-09 00:57:13,645 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48699763593380613 [2025-03-09 00:57:13,645 INFO L175 Difference]: Start difference. First operand has 120 places, 204 transitions, 1084 flow. Second operand 3 states and 206 transitions. [2025-03-09 00:57:13,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 276 transitions, 1925 flow [2025-03-09 00:57:13,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 276 transitions, 1925 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 00:57:13,676 INFO L231 Difference]: Finished difference. Result has 124 places, 214 transitions, 1237 flow [2025-03-09 00:57:13,676 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1237, PETRI_PLACES=124, PETRI_TRANSITIONS=214} [2025-03-09 00:57:13,677 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -4 predicate places. [2025-03-09 00:57:13,677 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 214 transitions, 1237 flow [2025-03-09 00:57:13,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2025-03-09 00:57:13,677 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:57:13,677 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:57:13,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 00:57:13,678 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-09 00:57:13,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:57:13,678 INFO L85 PathProgramCache]: Analyzing trace with hash 403437087, now seen corresponding path program 1 times [2025-03-09 00:57:13,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:57:13,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410719583] [2025-03-09 00:57:13,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:57:13,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:57:13,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:57:13,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:57:13,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:57:13,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:57:13,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:57:13,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:57:13,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410719583] [2025-03-09 00:57:13,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410719583] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:57:13,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:57:13,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:57:13,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029494010] [2025-03-09 00:57:13,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:57:13,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:57:13,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:57:13,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:57:13,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:57:13,761 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 141 [2025-03-09 00:57:13,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 214 transitions, 1237 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2025-03-09 00:57:13,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:57:13,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 141 [2025-03-09 00:57:13,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:57:15,240 INFO L124 PetriNetUnfolderBase]: 14228/22392 cut-off events. [2025-03-09 00:57:15,240 INFO L125 PetriNetUnfolderBase]: For 12692/12692 co-relation queries the response was YES. [2025-03-09 00:57:15,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64058 conditions, 22392 events. 14228/22392 cut-off events. For 12692/12692 co-relation queries the response was YES. Maximal size of possible extension queue 1249. Compared 163301 event pairs, 5736 based on Foata normal form. 468/16785 useless extension candidates. Maximal degree in co-relation 64044. Up to 12714 conditions per place. [2025-03-09 00:57:15,332 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 232 selfloop transitions, 9 changer transitions 0/254 dead transitions. [2025-03-09 00:57:15,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 254 transitions, 1870 flow [2025-03-09 00:57:15,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:57:15,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 00:57:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2025-03-09 00:57:15,333 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4397163120567376 [2025-03-09 00:57:15,333 INFO L175 Difference]: Start difference. First operand has 124 places, 214 transitions, 1237 flow. Second operand 3 states and 186 transitions. [2025-03-09 00:57:15,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 254 transitions, 1870 flow [2025-03-09 00:57:15,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 254 transitions, 1836 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 00:57:15,374 INFO L231 Difference]: Finished difference. Result has 121 places, 207 transitions, 1179 flow [2025-03-09 00:57:15,374 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1179, PETRI_PLACES=121, PETRI_TRANSITIONS=207} [2025-03-09 00:57:15,375 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -7 predicate places. [2025-03-09 00:57:15,375 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 207 transitions, 1179 flow [2025-03-09 00:57:15,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2025-03-09 00:57:15,375 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:57:15,375 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:57:15,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 00:57:15,375 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-09 00:57:15,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:57:15,376 INFO L85 PathProgramCache]: Analyzing trace with hash 403437088, now seen corresponding path program 1 times [2025-03-09 00:57:15,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:57:15,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625851692] [2025-03-09 00:57:15,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:57:15,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:57:15,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:57:15,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:57:15,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:57:15,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:57:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:57:15,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:57:15,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625851692] [2025-03-09 00:57:15,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625851692] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:57:15,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:57:15,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 00:57:15,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114750807] [2025-03-09 00:57:15,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:57:15,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:57:15,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:57:15,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:57:15,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:57:15,487 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 141 [2025-03-09 00:57:15,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 207 transitions, 1179 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2025-03-09 00:57:15,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:57:15,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 141 [2025-03-09 00:57:15,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:57:16,842 INFO L124 PetriNetUnfolderBase]: 13202/20846 cut-off events. [2025-03-09 00:57:16,842 INFO L125 PetriNetUnfolderBase]: For 11383/11419 co-relation queries the response was YES. [2025-03-09 00:57:16,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59269 conditions, 20846 events. 13202/20846 cut-off events. For 11383/11419 co-relation queries the response was YES. Maximal size of possible extension queue 1160. Compared 149444 event pairs, 6028 based on Foata normal form. 0/15305 useless extension candidates. Maximal degree in co-relation 59255. Up to 10011 conditions per place. [2025-03-09 00:57:16,965 INFO L140 encePairwiseOnDemand]: 128/141 looper letters, 259 selfloop transitions, 13 changer transitions 0/285 dead transitions. [2025-03-09 00:57:16,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 285 transitions, 2065 flow [2025-03-09 00:57:16,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:57:16,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 00:57:16,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2025-03-09 00:57:16,971 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5153664302600472 [2025-03-09 00:57:16,971 INFO L175 Difference]: Start difference. First operand has 121 places, 207 transitions, 1179 flow. Second operand 3 states and 218 transitions. [2025-03-09 00:57:16,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 285 transitions, 2065 flow [2025-03-09 00:57:17,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 285 transitions, 2045 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 00:57:17,011 INFO L231 Difference]: Finished difference. Result has 122 places, 207 transitions, 1208 flow [2025-03-09 00:57:17,011 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1208, PETRI_PLACES=122, PETRI_TRANSITIONS=207} [2025-03-09 00:57:17,011 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -6 predicate places. [2025-03-09 00:57:17,011 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 207 transitions, 1208 flow [2025-03-09 00:57:17,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2025-03-09 00:57:17,011 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:57:17,011 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:57:17,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 00:57:17,012 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-09 00:57:17,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:57:17,012 INFO L85 PathProgramCache]: Analyzing trace with hash 403437089, now seen corresponding path program 1 times [2025-03-09 00:57:17,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:57:17,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363230639] [2025-03-09 00:57:17,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:57:17,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:57:17,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:57:17,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:57:17,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:57:17,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:57:17,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:57:17,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:57:17,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363230639] [2025-03-09 00:57:17,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363230639] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:57:17,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:57:17,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 00:57:17,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869322413] [2025-03-09 00:57:17,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:57:17,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:57:17,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:57:17,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:57:17,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:57:17,126 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 141 [2025-03-09 00:57:17,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 207 transitions, 1208 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2025-03-09 00:57:17,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:57:17,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 141 [2025-03-09 00:57:17,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 00:57:18,325 INFO L124 PetriNetUnfolderBase]: 11966/18866 cut-off events. [2025-03-09 00:57:18,326 INFO L125 PetriNetUnfolderBase]: For 12302/12338 co-relation queries the response was YES. [2025-03-09 00:57:18,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55743 conditions, 18866 events. 11966/18866 cut-off events. For 12302/12338 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 133103 event pairs, 7766 based on Foata normal form. 210/14396 useless extension candidates. Maximal degree in co-relation 55728. Up to 18028 conditions per place. [2025-03-09 00:57:18,400 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 187 selfloop transitions, 1 changer transitions 0/201 dead transitions. [2025-03-09 00:57:18,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 201 transitions, 1560 flow [2025-03-09 00:57:18,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:57:18,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 00:57:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2025-03-09 00:57:18,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2025-03-09 00:57:18,401 INFO L175 Difference]: Start difference. First operand has 122 places, 207 transitions, 1208 flow. Second operand 3 states and 141 transitions. [2025-03-09 00:57:18,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 201 transitions, 1560 flow [2025-03-09 00:57:18,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 201 transitions, 1534 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 00:57:18,426 INFO L231 Difference]: Finished difference. Result has 118 places, 201 transitions, 1160 flow [2025-03-09 00:57:18,427 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1160, PETRI_PLACES=118, PETRI_TRANSITIONS=201} [2025-03-09 00:57:18,427 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -10 predicate places. [2025-03-09 00:57:18,427 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 201 transitions, 1160 flow [2025-03-09 00:57:18,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2025-03-09 00:57:18,428 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:57:18,428 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-03-09 00:57:18,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 00:57:18,428 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-09 00:57:18,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:57:18,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1873574278, now seen corresponding path program 1 times [2025-03-09 00:57:18,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:57:18,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372006357] [2025-03-09 00:57:18,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:57:18,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:57:18,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 00:57:18,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 00:57:18,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:57:18,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 00:57:18,436 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 00:57:18,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 00:57:18,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 00:57:18,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:57:18,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 00:57:18,446 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 00:57:18,446 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 00:57:18,446 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (115 of 116 remaining) [2025-03-09 00:57:18,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 116 remaining) [2025-03-09 00:57:18,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 116 remaining) [2025-03-09 00:57:18,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 116 remaining) [2025-03-09 00:57:18,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 116 remaining) [2025-03-09 00:57:18,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 116 remaining) [2025-03-09 00:57:18,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 116 remaining) [2025-03-09 00:57:18,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 116 remaining) [2025-03-09 00:57:18,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 116 remaining) [2025-03-09 00:57:18,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (106 of 116 remaining) [2025-03-09 00:57:18,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 116 remaining) [2025-03-09 00:57:18,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 116 remaining) [2025-03-09 00:57:18,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 116 remaining) [2025-03-09 00:57:18,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 116 remaining) [2025-03-09 00:57:18,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (101 of 116 remaining) [2025-03-09 00:57:18,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 116 remaining) [2025-03-09 00:57:18,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 116 remaining) [2025-03-09 00:57:18,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 116 remaining) [2025-03-09 00:57:18,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 116 remaining) [2025-03-09 00:57:18,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 116 remaining) [2025-03-09 00:57:18,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 116 remaining) [2025-03-09 00:57:18,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 116 remaining) [2025-03-09 00:57:18,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 116 remaining) [2025-03-09 00:57:18,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 116 remaining) [2025-03-09 00:57:18,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 116 remaining) [2025-03-09 00:57:18,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 116 remaining) [2025-03-09 00:57:18,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 116 remaining) [2025-03-09 00:57:18,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 116 remaining) [2025-03-09 00:57:18,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 116 remaining) [2025-03-09 00:57:18,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 116 remaining) [2025-03-09 00:57:18,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 116 remaining) [2025-03-09 00:57:18,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 116 remaining) [2025-03-09 00:57:18,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 116 remaining) [2025-03-09 00:57:18,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 116 remaining) [2025-03-09 00:57:18,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 116 remaining) [2025-03-09 00:57:18,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (76 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (67 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (62 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 116 remaining) [2025-03-09 00:57:18,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (29 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 116 remaining) [2025-03-09 00:57:18,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 116 remaining) [2025-03-09 00:57:18,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (24 of 116 remaining) [2025-03-09 00:57:18,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 116 remaining) [2025-03-09 00:57:18,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 116 remaining) [2025-03-09 00:57:18,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 116 remaining) [2025-03-09 00:57:18,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 116 remaining) [2025-03-09 00:57:18,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 116 remaining) [2025-03-09 00:57:18,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 116 remaining) [2025-03-09 00:57:18,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 116 remaining) [2025-03-09 00:57:18,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 116 remaining) [2025-03-09 00:57:18,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 116 remaining) [2025-03-09 00:57:18,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 116 remaining) [2025-03-09 00:57:18,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 116 remaining) [2025-03-09 00:57:18,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 116 remaining) [2025-03-09 00:57:18,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 116 remaining) [2025-03-09 00:57:18,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 116 remaining) [2025-03-09 00:57:18,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 116 remaining) [2025-03-09 00:57:18,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 116 remaining) [2025-03-09 00:57:18,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 116 remaining) [2025-03-09 00:57:18,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 116 remaining) [2025-03-09 00:57:18,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 116 remaining) [2025-03-09 00:57:18,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 116 remaining) [2025-03-09 00:57:18,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 116 remaining) [2025-03-09 00:57:18,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 116 remaining) [2025-03-09 00:57:18,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 116 remaining) [2025-03-09 00:57:18,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 116 remaining) [2025-03-09 00:57:18,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 00:57:18,452 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:57:18,452 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 00:57:18,453 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-09 00:57:18,586 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 00:57:18,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 208 transitions, 434 flow [2025-03-09 00:57:18,613 INFO L124 PetriNetUnfolderBase]: 27/222 cut-off events. [2025-03-09 00:57:18,613 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-09 00:57:18,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 222 events. 27/222 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1410 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 203. Up to 4 conditions per place. [2025-03-09 00:57:18,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 208 transitions, 434 flow [2025-03-09 00:57:18,618 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 208 transitions, 434 flow [2025-03-09 00:57:18,621 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:57:18,622 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;@3497a71a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:57:18,622 INFO L334 AbstractCegarLoop]: Starting to check reachability of 154 error locations. [2025-03-09 00:57:18,623 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 00:57:18,623 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-09 00:57:18,623 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 00:57:18,623 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 00:57:18,623 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 00:57:18,623 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 151 more)] === [2025-03-09 00:57:18,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:57:18,624 INFO L85 PathProgramCache]: Analyzing trace with hash 868944, now seen corresponding path program 1 times [2025-03-09 00:57:18,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 00:57:18,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754400410] [2025-03-09 00:57:18,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:57:18,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 00:57:18,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:57:18,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:57:18,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:57:18,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:57:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:57:18,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 00:57:18,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754400410] [2025-03-09 00:57:18,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754400410] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:57:18,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:57:18,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:57:18,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799285815] [2025-03-09 00:57:18,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:57:18,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-09 00:57:18,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 00:57:18,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-09 00:57:18,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-09 00:57:18,637 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 208 [2025-03-09 00:57:18,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 208 transitions, 434 flow. Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2025-03-09 00:57:18,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 00:57:18,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 208 [2025-03-09 00:57:18,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand