./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/04_incdec_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/04_incdec_cas.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 0.2.5-dev-84cfde4 [2024-10-11 19:27:09,164 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:27:09,240 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:27:09,248 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:27:09,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:27:09,283 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:27:09,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:27:09,284 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:27:09,285 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:27:09,287 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:27:09,287 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:27:09,288 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:27:09,288 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:27:09,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:27:09,292 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:27:09,293 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:27:09,293 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:27:09,293 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:27:09,294 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:27:09,294 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:27:09,294 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:27:09,295 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:27:09,296 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:27:09,296 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:27:09,299 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:27:09,299 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:27:09,299 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:27:09,300 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:27:09,300 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:27:09,300 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:27:09,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:27:09,301 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:27:09,301 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:27:09,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:27:09,301 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:27:09,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:27:09,302 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:27:09,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:27:09,303 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:27:09,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:27:09,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:27:09,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:27:09,304 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9295efc0d8bacfc5fb202511f0d3721ae5554ffb4def47cf5dbf45088356869 [2024-10-11 19:27:09,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:27:09,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:27:09,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:27:09,609 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:27:09,610 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:27:09,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2024-10-11 19:27:11,120 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:27:11,381 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:27:11,381 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2024-10-11 19:27:11,403 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/2b708acf7/7c559f5551b14f868a1030311de152c8/FLAG68a4b1db8 [2024-10-11 19:27:11,420 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/2b708acf7/7c559f5551b14f868a1030311de152c8 [2024-10-11 19:27:11,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:27:11,424 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:27:11,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:27:11,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:27:11,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:27:11,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:27:11" (1/1) ... [2024-10-11 19:27:11,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42124114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:11, skipping insertion in model container [2024-10-11 19:27:11,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:27:11" (1/1) ... [2024-10-11 19:27:11,481 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:27:11,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:27:11,843 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:27:11,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:27:11,948 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:27:11,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:11 WrapperNode [2024-10-11 19:27:11,949 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:27:11,950 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:27:11,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:27:11,950 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:27:11,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:11" (1/1) ... [2024-10-11 19:27:11,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:11" (1/1) ... [2024-10-11 19:27:12,007 INFO L138 Inliner]: procedures = 174, calls = 46, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 164 [2024-10-11 19:27:12,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:27:12,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:27:12,008 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:27:12,008 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:27:12,018 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:11" (1/1) ... [2024-10-11 19:27:12,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:11" (1/1) ... [2024-10-11 19:27:12,025 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:11" (1/1) ... [2024-10-11 19:27:12,050 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 6, 6, 9]. 39 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [2, 0, 2, 1]. The 8 writes are split as follows [0, 4, 2, 2]. [2024-10-11 19:27:12,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:11" (1/1) ... [2024-10-11 19:27:12,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:11" (1/1) ... [2024-10-11 19:27:12,067 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:11" (1/1) ... [2024-10-11 19:27:12,071 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:11" (1/1) ... [2024-10-11 19:27:12,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:11" (1/1) ... [2024-10-11 19:27:12,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:11" (1/1) ... [2024-10-11 19:27:12,081 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:27:12,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:27:12,083 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:27:12,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:27:12,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:11" (1/1) ... [2024-10-11 19:27:12,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:27:12,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:27:12,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:27:12,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:27:12,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 19:27:12,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 19:27:12,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 19:27:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 19:27:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-11 19:27:12,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-11 19:27:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 19:27:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 19:27:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 19:27:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 19:27:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:27:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:27:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 19:27:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 19:27:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:27:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 19:27:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 19:27:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 19:27:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:27:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:27:12,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:27:12,163 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:27:12,285 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:27:12,287 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:27:12,695 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:27:12,696 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:27:13,081 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:27:13,082 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 19:27:13,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:27:13 BoogieIcfgContainer [2024-10-11 19:27:13,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:27:13,109 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:27:13,110 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:27:13,113 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:27:13,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:27:11" (1/3) ... [2024-10-11 19:27:13,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550f155e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:27:13, skipping insertion in model container [2024-10-11 19:27:13,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:11" (2/3) ... [2024-10-11 19:27:13,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550f155e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:27:13, skipping insertion in model container [2024-10-11 19:27:13,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:27:13" (3/3) ... [2024-10-11 19:27:13,115 INFO L112 eAbstractionObserver]: Analyzing ICFG 04_incdec_cas.i [2024-10-11 19:27:13,140 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:27:13,141 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2024-10-11 19:27:13,141 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:27:13,265 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:27:13,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 73 transitions, 150 flow [2024-10-11 19:27:13,358 INFO L124 PetriNetUnfolderBase]: 8/77 cut-off events. [2024-10-11 19:27:13,358 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:27:13,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 77 events. 8/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 397 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2024-10-11 19:27:13,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 73 transitions, 150 flow [2024-10-11 19:27:13,371 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 73 transitions, 150 flow [2024-10-11 19:27:13,387 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:27:13,399 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;@37a2d656, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:27:13,400 INFO L334 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2024-10-11 19:27:13,402 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:27:13,403 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-11 19:27:13,403 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:27:13,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:13,404 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:27:13,405 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2024-10-11 19:27:13,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:13,411 INFO L85 PathProgramCache]: Analyzing trace with hash 564497, now seen corresponding path program 1 times [2024-10-11 19:27:13,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:13,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265827858] [2024-10-11 19:27:13,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:13,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:27:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:27:13,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:27:13,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265827858] [2024-10-11 19:27:13,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265827858] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:27:13,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:27:13,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:27:13,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614630786] [2024-10-11 19:27:13,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:27:13,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:27:13,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:27:13,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:27:13,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:27:13,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 73 [2024-10-11 19:27:13,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 73 transitions, 150 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) [2024-10-11 19:27:13,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:27:13,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 73 [2024-10-11 19:27:13,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:27:13,880 INFO L124 PetriNetUnfolderBase]: 112/277 cut-off events. [2024-10-11 19:27:13,880 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:27:13,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540 conditions, 277 events. 112/277 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1348 event pairs, 94 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 528. Up to 259 conditions per place. [2024-10-11 19:27:13,885 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 57 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2024-10-11 19:27:13,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 246 flow [2024-10-11 19:27:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:27:13,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:27:13,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-10-11 19:27:13,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-10-11 19:27:13,899 INFO L175 Difference]: Start difference. First operand has 68 places, 73 transitions, 150 flow. Second operand 2 states and 80 transitions. [2024-10-11 19:27:13,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 246 flow [2024-10-11 19:27:13,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 246 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:27:13,906 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 132 flow [2024-10-11 19:27:13,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=132, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-10-11 19:27:13,916 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2024-10-11 19:27:13,916 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 132 flow [2024-10-11 19:27:13,916 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) [2024-10-11 19:27:13,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:13,916 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-11 19:27:13,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:27:13,917 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2024-10-11 19:27:13,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:13,917 INFO L85 PathProgramCache]: Analyzing trace with hash -359184895, now seen corresponding path program 1 times [2024-10-11 19:27:13,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:13,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571484866] [2024-10-11 19:27:13,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:13,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:27:13,958 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:27:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:27:14,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 19:27:14,028 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:27:14,033 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (77 of 78 remaining) [2024-10-11 19:27:14,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 78 remaining) [2024-10-11 19:27:14,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 78 remaining) [2024-10-11 19:27:14,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 78 remaining) [2024-10-11 19:27:14,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 78 remaining) [2024-10-11 19:27:14,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 78 remaining) [2024-10-11 19:27:14,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 78 remaining) [2024-10-11 19:27:14,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 78 remaining) [2024-10-11 19:27:14,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 78 remaining) [2024-10-11 19:27:14,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (68 of 78 remaining) [2024-10-11 19:27:14,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 78 remaining) [2024-10-11 19:27:14,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 78 remaining) [2024-10-11 19:27:14,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 78 remaining) [2024-10-11 19:27:14,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 78 remaining) [2024-10-11 19:27:14,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (63 of 78 remaining) [2024-10-11 19:27:14,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 78 remaining) [2024-10-11 19:27:14,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 78 remaining) [2024-10-11 19:27:14,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 78 remaining) [2024-10-11 19:27:14,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 78 remaining) [2024-10-11 19:27:14,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 78 remaining) [2024-10-11 19:27:14,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 78 remaining) [2024-10-11 19:27:14,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 78 remaining) [2024-10-11 19:27:14,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 78 remaining) [2024-10-11 19:27:14,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 78 remaining) [2024-10-11 19:27:14,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 78 remaining) [2024-10-11 19:27:14,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 78 remaining) [2024-10-11 19:27:14,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 78 remaining) [2024-10-11 19:27:14,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 78 remaining) [2024-10-11 19:27:14,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 78 remaining) [2024-10-11 19:27:14,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 78 remaining) [2024-10-11 19:27:14,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 78 remaining) [2024-10-11 19:27:14,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 78 remaining) [2024-10-11 19:27:14,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 78 remaining) [2024-10-11 19:27:14,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 78 remaining) [2024-10-11 19:27:14,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 78 remaining) [2024-10-11 19:27:14,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 78 remaining) [2024-10-11 19:27:14,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 78 remaining) [2024-10-11 19:27:14,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 78 remaining) [2024-10-11 19:27:14,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 78 remaining) [2024-10-11 19:27:14,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (38 of 78 remaining) [2024-10-11 19:27:14,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 78 remaining) [2024-10-11 19:27:14,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 78 remaining) [2024-10-11 19:27:14,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 78 remaining) [2024-10-11 19:27:14,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 78 remaining) [2024-10-11 19:27:14,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 78 remaining) [2024-10-11 19:27:14,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 78 remaining) [2024-10-11 19:27:14,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 78 remaining) [2024-10-11 19:27:14,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 78 remaining) [2024-10-11 19:27:14,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (29 of 78 remaining) [2024-10-11 19:27:14,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 78 remaining) [2024-10-11 19:27:14,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 78 remaining) [2024-10-11 19:27:14,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 78 remaining) [2024-10-11 19:27:14,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 78 remaining) [2024-10-11 19:27:14,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (24 of 78 remaining) [2024-10-11 19:27:14,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 78 remaining) [2024-10-11 19:27:14,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 78 remaining) [2024-10-11 19:27:14,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 78 remaining) [2024-10-11 19:27:14,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 78 remaining) [2024-10-11 19:27:14,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 78 remaining) [2024-10-11 19:27:14,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 78 remaining) [2024-10-11 19:27:14,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 78 remaining) [2024-10-11 19:27:14,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 78 remaining) [2024-10-11 19:27:14,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 78 remaining) [2024-10-11 19:27:14,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 78 remaining) [2024-10-11 19:27:14,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 78 remaining) [2024-10-11 19:27:14,054 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 78 remaining) [2024-10-11 19:27:14,054 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 78 remaining) [2024-10-11 19:27:14,054 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 78 remaining) [2024-10-11 19:27:14,054 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 78 remaining) [2024-10-11 19:27:14,054 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 78 remaining) [2024-10-11 19:27:14,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 78 remaining) [2024-10-11 19:27:14,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 78 remaining) [2024-10-11 19:27:14,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 78 remaining) [2024-10-11 19:27:14,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 78 remaining) [2024-10-11 19:27:14,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 78 remaining) [2024-10-11 19:27:14,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 78 remaining) [2024-10-11 19:27:14,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 78 remaining) [2024-10-11 19:27:14,056 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 78 remaining) [2024-10-11 19:27:14,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:27:14,056 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 19:27:14,059 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 19:27:14,059 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 19:27:14,205 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:27:14,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 139 transitions, 288 flow [2024-10-11 19:27:14,271 INFO L124 PetriNetUnfolderBase]: 16/148 cut-off events. [2024-10-11 19:27:14,272 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:27:14,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 148 events. 16/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 928 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 135. Up to 3 conditions per place. [2024-10-11 19:27:14,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 139 transitions, 288 flow [2024-10-11 19:27:14,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 139 transitions, 288 flow [2024-10-11 19:27:14,279 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:27:14,280 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;@37a2d656, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:27:14,280 INFO L334 AbstractCegarLoop]: Starting to check reachability of 116 error locations. [2024-10-11 19:27:14,282 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:27:14,282 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-11 19:27:14,283 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:27:14,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:14,283 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:27:14,283 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-10-11 19:27:14,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:14,284 INFO L85 PathProgramCache]: Analyzing trace with hash 702524, now seen corresponding path program 1 times [2024-10-11 19:27:14,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:14,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769970368] [2024-10-11 19:27:14,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:14,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:27:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:27:14,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:27:14,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769970368] [2024-10-11 19:27:14,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769970368] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:27:14,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:27:14,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:27:14,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8293939] [2024-10-11 19:27:14,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:27:14,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:27:14,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:27:14,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:27:14,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:27:14,313 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 139 [2024-10-11 19:27:14,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 139 transitions, 288 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) [2024-10-11 19:27:14,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:27:14,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 139 [2024-10-11 19:27:14,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:27:16,994 INFO L124 PetriNetUnfolderBase]: 13120/20920 cut-off events. [2024-10-11 19:27:16,995 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-10-11 19:27:17,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41248 conditions, 20920 events. 13120/20920 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 1328. Compared 151700 event pairs, 11374 based on Foata normal form. 0/9844 useless extension candidates. Maximal degree in co-relation 19800. Up to 20179 conditions per place. [2024-10-11 19:27:17,146 INFO L140 encePairwiseOnDemand]: 126/139 looper letters, 111 selfloop transitions, 0 changer transitions 0/124 dead transitions. [2024-10-11 19:27:17,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 124 transitions, 480 flow [2024-10-11 19:27:17,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:27:17,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:27:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 152 transitions. [2024-10-11 19:27:17,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5467625899280576 [2024-10-11 19:27:17,150 INFO L175 Difference]: Start difference. First operand has 128 places, 139 transitions, 288 flow. Second operand 2 states and 152 transitions. [2024-10-11 19:27:17,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 124 transitions, 480 flow [2024-10-11 19:27:17,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 124 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:27:17,156 INFO L231 Difference]: Finished difference. Result has 118 places, 124 transitions, 258 flow [2024-10-11 19:27:17,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=258, PETRI_PLACES=118, PETRI_TRANSITIONS=124} [2024-10-11 19:27:17,158 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -10 predicate places. [2024-10-11 19:27:17,158 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 124 transitions, 258 flow [2024-10-11 19:27:17,158 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) [2024-10-11 19:27:17,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:17,159 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:27:17,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 19:27:17,159 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-10-11 19:27:17,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:17,160 INFO L85 PathProgramCache]: Analyzing trace with hash -540035439, now seen corresponding path program 1 times [2024-10-11 19:27:17,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:17,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509891643] [2024-10-11 19:27:17,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:17,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:27:17,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:27:17,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:27:17,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509891643] [2024-10-11 19:27:17,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509891643] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:27:17,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:27:17,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:27:17,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064981083] [2024-10-11 19:27:17,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:27:17,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:27:17,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:27:17,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:27:17,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:27:17,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 139 [2024-10-11 19:27:17,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 124 transitions, 258 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) [2024-10-11 19:27:17,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:27:17,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 139 [2024-10-11 19:27:17,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:27:20,165 INFO L124 PetriNetUnfolderBase]: 11770/18940 cut-off events. [2024-10-11 19:27:20,166 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-10-11 19:27:20,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37271 conditions, 18940 events. 11770/18940 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 1260. Compared 139106 event pairs, 7200 based on Foata normal form. 0/9874 useless extension candidates. Maximal degree in co-relation 37266. Up to 12245 conditions per place. [2024-10-11 19:27:20,297 INFO L140 encePairwiseOnDemand]: 80/139 looper letters, 237 selfloop transitions, 55 changer transitions 0/305 dead transitions. [2024-10-11 19:27:20,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 305 transitions, 1209 flow [2024-10-11 19:27:20,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:27:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:27:20,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2024-10-11 19:27:20,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6690647482014388 [2024-10-11 19:27:20,301 INFO L175 Difference]: Start difference. First operand has 118 places, 124 transitions, 258 flow. Second operand 4 states and 372 transitions. [2024-10-11 19:27:20,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 305 transitions, 1209 flow [2024-10-11 19:27:20,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 305 transitions, 1209 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:27:20,314 INFO L231 Difference]: Finished difference. Result has 124 places, 178 transitions, 726 flow [2024-10-11 19:27:20,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=726, PETRI_PLACES=124, PETRI_TRANSITIONS=178} [2024-10-11 19:27:20,316 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -4 predicate places. [2024-10-11 19:27:20,316 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 178 transitions, 726 flow [2024-10-11 19:27:20,316 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) [2024-10-11 19:27:20,317 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:20,317 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:27:20,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 19:27:20,318 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-10-11 19:27:20,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:20,318 INFO L85 PathProgramCache]: Analyzing trace with hash -540035438, now seen corresponding path program 1 times [2024-10-11 19:27:20,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:20,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991016140] [2024-10-11 19:27:20,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:20,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:27:20,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:27:20,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:27:20,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991016140] [2024-10-11 19:27:20,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991016140] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:27:20,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:27:20,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:27:20,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018139319] [2024-10-11 19:27:20,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:27:20,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:27:20,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:27:20,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:27:20,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:27:20,547 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 139 [2024-10-11 19:27:20,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 178 transitions, 726 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) [2024-10-11 19:27:20,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:27:20,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 139 [2024-10-11 19:27:20,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:27:22,964 INFO L124 PetriNetUnfolderBase]: 9028/14560 cut-off events. [2024-10-11 19:27:22,964 INFO L125 PetriNetUnfolderBase]: For 2040/2040 co-relation queries the response was YES. [2024-10-11 19:27:23,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35779 conditions, 14560 events. 9028/14560 cut-off events. For 2040/2040 co-relation queries the response was YES. Maximal size of possible extension queue 989. Compared 103518 event pairs, 5478 based on Foata normal form. 972/10192 useless extension candidates. Maximal degree in co-relation 35771. Up to 8777 conditions per place. [2024-10-11 19:27:23,090 INFO L140 encePairwiseOnDemand]: 118/139 looper letters, 215 selfloop transitions, 9 changer transitions 0/237 dead transitions. [2024-10-11 19:27:23,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 237 transitions, 1373 flow [2024-10-11 19:27:23,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:27:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:27:23,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2024-10-11 19:27:23,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46402877697841727 [2024-10-11 19:27:23,095 INFO L175 Difference]: Start difference. First operand has 124 places, 178 transitions, 726 flow. Second operand 4 states and 258 transitions. [2024-10-11 19:27:23,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 237 transitions, 1373 flow [2024-10-11 19:27:23,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 237 transitions, 1373 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:27:23,124 INFO L231 Difference]: Finished difference. Result has 115 places, 166 transitions, 720 flow [2024-10-11 19:27:23,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=720, PETRI_PLACES=115, PETRI_TRANSITIONS=166} [2024-10-11 19:27:23,125 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -13 predicate places. [2024-10-11 19:27:23,125 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 166 transitions, 720 flow [2024-10-11 19:27:23,126 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) [2024-10-11 19:27:23,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:23,126 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:27:23,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 19:27:23,126 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-10-11 19:27:23,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:23,126 INFO L85 PathProgramCache]: Analyzing trace with hash 717013728, now seen corresponding path program 1 times [2024-10-11 19:27:23,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:23,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248395962] [2024-10-11 19:27:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:23,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:27:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:27:23,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:27:23,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248395962] [2024-10-11 19:27:23,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248395962] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:27:23,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:27:23,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:27:23,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186139598] [2024-10-11 19:27:23,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:27:23,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:27:23,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:27:23,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:27:23,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:27:23,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 139 [2024-10-11 19:27:23,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 166 transitions, 720 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) [2024-10-11 19:27:23,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:27:23,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 139 [2024-10-11 19:27:23,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:27:25,022 INFO L124 PetriNetUnfolderBase]: 9167/14624 cut-off events. [2024-10-11 19:27:25,023 INFO L125 PetriNetUnfolderBase]: For 3471/3471 co-relation queries the response was YES. [2024-10-11 19:27:25,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36755 conditions, 14624 events. 9167/14624 cut-off events. For 3471/3471 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 103663 event pairs, 4372 based on Foata normal form. 0/9656 useless extension candidates. Maximal degree in co-relation 36746. Up to 9574 conditions per place. [2024-10-11 19:27:25,151 INFO L140 encePairwiseOnDemand]: 127/139 looper letters, 204 selfloop transitions, 13 changer transitions 0/228 dead transitions. [2024-10-11 19:27:25,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 228 transitions, 1377 flow [2024-10-11 19:27:25,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:27:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:27:25,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2024-10-11 19:27:25,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4844124700239808 [2024-10-11 19:27:25,153 INFO L175 Difference]: Start difference. First operand has 115 places, 166 transitions, 720 flow. Second operand 3 states and 202 transitions. [2024-10-11 19:27:25,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 228 transitions, 1377 flow [2024-10-11 19:27:25,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 228 transitions, 1363 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:27:25,173 INFO L231 Difference]: Finished difference. Result has 117 places, 174 transitions, 828 flow [2024-10-11 19:27:25,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=828, PETRI_PLACES=117, PETRI_TRANSITIONS=174} [2024-10-11 19:27:25,175 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -11 predicate places. [2024-10-11 19:27:25,176 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 174 transitions, 828 flow [2024-10-11 19:27:25,176 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) [2024-10-11 19:27:25,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:25,176 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:27:25,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 19:27:25,177 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-10-11 19:27:25,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:25,177 INFO L85 PathProgramCache]: Analyzing trace with hash 717013729, now seen corresponding path program 1 times [2024-10-11 19:27:25,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:25,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339202460] [2024-10-11 19:27:25,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:25,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:27:25,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:27:25,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:27:25,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339202460] [2024-10-11 19:27:25,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339202460] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:27:25,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:27:25,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:27:25,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19261199] [2024-10-11 19:27:25,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:27:25,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:27:25,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:27:25,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:27:25,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:27:25,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 139 [2024-10-11 19:27:25,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 174 transitions, 828 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) [2024-10-11 19:27:25,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:27:25,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 139 [2024-10-11 19:27:25,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:27:27,841 INFO L124 PetriNetUnfolderBase]: 13846/22057 cut-off events. [2024-10-11 19:27:27,842 INFO L125 PetriNetUnfolderBase]: For 7393/7393 co-relation queries the response was YES. [2024-10-11 19:27:27,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58059 conditions, 22057 events. 13846/22057 cut-off events. For 7393/7393 co-relation queries the response was YES. Maximal size of possible extension queue 1184. Compared 160990 event pairs, 3985 based on Foata normal form. 207/15067 useless extension candidates. Maximal degree in co-relation 58049. Up to 14223 conditions per place. [2024-10-11 19:27:28,010 INFO L140 encePairwiseOnDemand]: 126/139 looper letters, 384 selfloop transitions, 35 changer transitions 0/433 dead transitions. [2024-10-11 19:27:28,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 433 transitions, 2903 flow [2024-10-11 19:27:28,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:27:28,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:27:28,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 333 transitions. [2024-10-11 19:27:28,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.479136690647482 [2024-10-11 19:27:28,013 INFO L175 Difference]: Start difference. First operand has 117 places, 174 transitions, 828 flow. Second operand 5 states and 333 transitions. [2024-10-11 19:27:28,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 433 transitions, 2903 flow [2024-10-11 19:27:28,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 433 transitions, 2849 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:27:28,076 INFO L231 Difference]: Finished difference. Result has 122 places, 208 transitions, 1156 flow [2024-10-11 19:27:28,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1156, PETRI_PLACES=122, PETRI_TRANSITIONS=208} [2024-10-11 19:27:28,079 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -6 predicate places. [2024-10-11 19:27:28,079 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 208 transitions, 1156 flow [2024-10-11 19:27:28,079 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) [2024-10-11 19:27:28,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:28,080 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:27:28,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 19:27:28,080 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-10-11 19:27:28,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:28,081 INFO L85 PathProgramCache]: Analyzing trace with hash 717047594, now seen corresponding path program 1 times [2024-10-11 19:27:28,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:28,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96442162] [2024-10-11 19:27:28,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:28,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:27:28,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:27:28,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:27:28,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96442162] [2024-10-11 19:27:28,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96442162] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:27:28,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:27:28,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:27:28,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112956656] [2024-10-11 19:27:28,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:27:28,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:27:28,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:27:28,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:27:28,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:27:28,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 139 [2024-10-11 19:27:28,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 208 transitions, 1156 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:27:28,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:27:28,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 139 [2024-10-11 19:27:28,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:27:30,901 INFO L124 PetriNetUnfolderBase]: 14169/22594 cut-off events. [2024-10-11 19:27:30,901 INFO L125 PetriNetUnfolderBase]: For 8841/8841 co-relation queries the response was YES. [2024-10-11 19:27:30,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63606 conditions, 22594 events. 14169/22594 cut-off events. For 8841/8841 co-relation queries the response was YES. Maximal size of possible extension queue 1193. Compared 167917 event pairs, 4168 based on Foata normal form. 0/16495 useless extension candidates. Maximal degree in co-relation 63593. Up to 8220 conditions per place. [2024-10-11 19:27:31,119 INFO L140 encePairwiseOnDemand]: 125/139 looper letters, 335 selfloop transitions, 26 changer transitions 0/374 dead transitions. [2024-10-11 19:27:31,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 374 transitions, 2713 flow [2024-10-11 19:27:31,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:27:31,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:27:31,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 279 transitions. [2024-10-11 19:27:31,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5017985611510791 [2024-10-11 19:27:31,122 INFO L175 Difference]: Start difference. First operand has 122 places, 208 transitions, 1156 flow. Second operand 4 states and 279 transitions. [2024-10-11 19:27:31,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 374 transitions, 2713 flow [2024-10-11 19:27:31,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 374 transitions, 2713 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:27:31,198 INFO L231 Difference]: Finished difference. Result has 127 places, 221 transitions, 1347 flow [2024-10-11 19:27:31,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1347, PETRI_PLACES=127, PETRI_TRANSITIONS=221} [2024-10-11 19:27:31,199 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -1 predicate places. [2024-10-11 19:27:31,199 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 221 transitions, 1347 flow [2024-10-11 19:27:31,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:27:31,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:31,200 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:27:31,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 19:27:31,200 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-10-11 19:27:31,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:31,201 INFO L85 PathProgramCache]: Analyzing trace with hash 717047598, now seen corresponding path program 1 times [2024-10-11 19:27:31,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:31,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103338997] [2024-10-11 19:27:31,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:31,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:27:31,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:27:31,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:27:31,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103338997] [2024-10-11 19:27:31,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103338997] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:27:31,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:27:31,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:27:31,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221825158] [2024-10-11 19:27:31,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:27:31,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:27:31,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:27:31,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:27:31,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:27:31,309 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 139 [2024-10-11 19:27:31,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 221 transitions, 1347 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) [2024-10-11 19:27:31,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:27:31,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 139 [2024-10-11 19:27:31,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:27:33,774 INFO L124 PetriNetUnfolderBase]: 14222/22566 cut-off events. [2024-10-11 19:27:33,774 INFO L125 PetriNetUnfolderBase]: For 13594/13594 co-relation queries the response was YES. [2024-10-11 19:27:33,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66425 conditions, 22566 events. 14222/22566 cut-off events. For 13594/13594 co-relation queries the response was YES. Maximal size of possible extension queue 1203. Compared 165889 event pairs, 6156 based on Foata normal form. 0/17034 useless extension candidates. Maximal degree in co-relation 66409. Up to 14436 conditions per place. [2024-10-11 19:27:33,986 INFO L140 encePairwiseOnDemand]: 126/139 looper letters, 256 selfloop transitions, 18 changer transitions 0/286 dead transitions. [2024-10-11 19:27:33,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 286 transitions, 2170 flow [2024-10-11 19:27:33,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:27:33,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:27:33,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions. [2024-10-11 19:27:33,988 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48201438848920863 [2024-10-11 19:27:33,988 INFO L175 Difference]: Start difference. First operand has 127 places, 221 transitions, 1347 flow. Second operand 3 states and 201 transitions. [2024-10-11 19:27:33,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 286 transitions, 2170 flow [2024-10-11 19:27:34,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 286 transitions, 2139 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-11 19:27:34,293 INFO L231 Difference]: Finished difference. Result has 130 places, 227 transitions, 1437 flow [2024-10-11 19:27:34,293 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1437, PETRI_PLACES=130, PETRI_TRANSITIONS=227} [2024-10-11 19:27:34,294 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 2 predicate places. [2024-10-11 19:27:34,294 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 227 transitions, 1437 flow [2024-10-11 19:27:34,294 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) [2024-10-11 19:27:34,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:34,295 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:27:34,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 19:27:34,295 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-10-11 19:27:34,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:34,296 INFO L85 PathProgramCache]: Analyzing trace with hash 717047599, now seen corresponding path program 1 times [2024-10-11 19:27:34,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:34,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761044058] [2024-10-11 19:27:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:34,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:27:34,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:27:34,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:27:34,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761044058] [2024-10-11 19:27:34,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761044058] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:27:34,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:27:34,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:27:34,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402540041] [2024-10-11 19:27:34,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:27:34,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:27:34,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:27:34,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:27:34,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:27:34,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 139 [2024-10-11 19:27:34,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 227 transitions, 1437 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) [2024-10-11 19:27:34,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:27:34,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 139 [2024-10-11 19:27:34,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:27:36,326 INFO L124 PetriNetUnfolderBase]: 13103/20862 cut-off events. [2024-10-11 19:27:36,327 INFO L125 PetriNetUnfolderBase]: For 19730/19730 co-relation queries the response was YES. [2024-10-11 19:27:36,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62814 conditions, 20862 events. 13103/20862 cut-off events. For 19730/19730 co-relation queries the response was YES. Maximal size of possible extension queue 1138. Compared 152158 event pairs, 6019 based on Foata normal form. 414/16764 useless extension candidates. Maximal degree in co-relation 62797. Up to 12739 conditions per place. [2024-10-11 19:27:36,466 INFO L140 encePairwiseOnDemand]: 133/139 looper letters, 240 selfloop transitions, 10 changer transitions 0/264 dead transitions. [2024-10-11 19:27:36,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 264 transitions, 2078 flow [2024-10-11 19:27:36,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:27:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:27:36,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2024-10-11 19:27:36,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.434052757793765 [2024-10-11 19:27:36,468 INFO L175 Difference]: Start difference. First operand has 130 places, 227 transitions, 1437 flow. Second operand 3 states and 181 transitions. [2024-10-11 19:27:36,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 264 transitions, 2078 flow [2024-10-11 19:27:36,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 264 transitions, 2042 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:27:36,525 INFO L231 Difference]: Finished difference. Result has 127 places, 220 transitions, 1379 flow [2024-10-11 19:27:36,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1379, PETRI_PLACES=127, PETRI_TRANSITIONS=220} [2024-10-11 19:27:36,525 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -1 predicate places. [2024-10-11 19:27:36,526 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 220 transitions, 1379 flow [2024-10-11 19:27:36,526 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) [2024-10-11 19:27:36,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:36,526 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:27:36,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 19:27:36,526 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-10-11 19:27:36,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:36,527 INFO L85 PathProgramCache]: Analyzing trace with hash 717047595, now seen corresponding path program 1 times [2024-10-11 19:27:36,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:36,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786380772] [2024-10-11 19:27:36,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:36,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:27:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:27:36,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:27:36,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786380772] [2024-10-11 19:27:36,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786380772] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:27:36,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:27:36,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:27:36,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921347335] [2024-10-11 19:27:36,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:27:36,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:27:36,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:27:36,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:27:36,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:27:36,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 139 [2024-10-11 19:27:36,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 220 transitions, 1379 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:27:36,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:27:36,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 139 [2024-10-11 19:27:36,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:27:38,658 INFO L124 PetriNetUnfolderBase]: 12893/20571 cut-off events. [2024-10-11 19:27:38,659 INFO L125 PetriNetUnfolderBase]: For 18050/18050 co-relation queries the response was YES. [2024-10-11 19:27:38,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61428 conditions, 20571 events. 12893/20571 cut-off events. For 18050/18050 co-relation queries the response was YES. Maximal size of possible extension queue 1157. Compared 150105 event pairs, 4084 based on Foata normal form. 222/16659 useless extension candidates. Maximal degree in co-relation 61411. Up to 6759 conditions per place. [2024-10-11 19:27:38,801 INFO L140 encePairwiseOnDemand]: 122/139 looper letters, 330 selfloop transitions, 44 changer transitions 0/387 dead transitions. [2024-10-11 19:27:38,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 387 transitions, 2947 flow [2024-10-11 19:27:38,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:27:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:27:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 306 transitions. [2024-10-11 19:27:38,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44028776978417267 [2024-10-11 19:27:38,803 INFO L175 Difference]: Start difference. First operand has 127 places, 220 transitions, 1379 flow. Second operand 5 states and 306 transitions. [2024-10-11 19:27:38,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 387 transitions, 2947 flow [2024-10-11 19:27:38,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 387 transitions, 2919 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:27:38,882 INFO L231 Difference]: Finished difference. Result has 132 places, 225 transitions, 1579 flow [2024-10-11 19:27:38,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1353, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1579, PETRI_PLACES=132, PETRI_TRANSITIONS=225} [2024-10-11 19:27:38,883 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 4 predicate places. [2024-10-11 19:27:38,883 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 225 transitions, 1579 flow [2024-10-11 19:27:38,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:27:38,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:38,883 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-11 19:27:38,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 19:27:38,884 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-10-11 19:27:38,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:38,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1627451642, now seen corresponding path program 1 times [2024-10-11 19:27:38,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:38,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124861611] [2024-10-11 19:27:38,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:38,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:27:38,891 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:27:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:27:38,903 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 19:27:38,904 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:27:38,904 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (115 of 116 remaining) [2024-10-11 19:27:38,904 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 116 remaining) [2024-10-11 19:27:38,904 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 116 remaining) [2024-10-11 19:27:38,904 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 116 remaining) [2024-10-11 19:27:38,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 116 remaining) [2024-10-11 19:27:38,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 116 remaining) [2024-10-11 19:27:38,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 116 remaining) [2024-10-11 19:27:38,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 116 remaining) [2024-10-11 19:27:38,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 116 remaining) [2024-10-11 19:27:38,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (106 of 116 remaining) [2024-10-11 19:27:38,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 116 remaining) [2024-10-11 19:27:38,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 116 remaining) [2024-10-11 19:27:38,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 116 remaining) [2024-10-11 19:27:38,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 116 remaining) [2024-10-11 19:27:38,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (101 of 116 remaining) [2024-10-11 19:27:38,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 116 remaining) [2024-10-11 19:27:38,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 116 remaining) [2024-10-11 19:27:38,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 116 remaining) [2024-10-11 19:27:38,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 116 remaining) [2024-10-11 19:27:38,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 116 remaining) [2024-10-11 19:27:38,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 116 remaining) [2024-10-11 19:27:38,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 116 remaining) [2024-10-11 19:27:38,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 116 remaining) [2024-10-11 19:27:38,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 116 remaining) [2024-10-11 19:27:38,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 116 remaining) [2024-10-11 19:27:38,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 116 remaining) [2024-10-11 19:27:38,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 116 remaining) [2024-10-11 19:27:38,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 116 remaining) [2024-10-11 19:27:38,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 116 remaining) [2024-10-11 19:27:38,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 116 remaining) [2024-10-11 19:27:38,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 116 remaining) [2024-10-11 19:27:38,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 116 remaining) [2024-10-11 19:27:38,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 116 remaining) [2024-10-11 19:27:38,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 116 remaining) [2024-10-11 19:27:38,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 116 remaining) [2024-10-11 19:27:38,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 116 remaining) [2024-10-11 19:27:38,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 116 remaining) [2024-10-11 19:27:38,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 116 remaining) [2024-10-11 19:27:38,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 116 remaining) [2024-10-11 19:27:38,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (76 of 116 remaining) [2024-10-11 19:27:38,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 116 remaining) [2024-10-11 19:27:38,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 116 remaining) [2024-10-11 19:27:38,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 116 remaining) [2024-10-11 19:27:38,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 116 remaining) [2024-10-11 19:27:38,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 116 remaining) [2024-10-11 19:27:38,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 116 remaining) [2024-10-11 19:27:38,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 116 remaining) [2024-10-11 19:27:38,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 116 remaining) [2024-10-11 19:27:38,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (67 of 116 remaining) [2024-10-11 19:27:38,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 116 remaining) [2024-10-11 19:27:38,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 116 remaining) [2024-10-11 19:27:38,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 116 remaining) [2024-10-11 19:27:38,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 116 remaining) [2024-10-11 19:27:38,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (62 of 116 remaining) [2024-10-11 19:27:38,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 116 remaining) [2024-10-11 19:27:38,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 116 remaining) [2024-10-11 19:27:38,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 116 remaining) [2024-10-11 19:27:38,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 116 remaining) [2024-10-11 19:27:38,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 116 remaining) [2024-10-11 19:27:38,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 116 remaining) [2024-10-11 19:27:38,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 116 remaining) [2024-10-11 19:27:38,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 116 remaining) [2024-10-11 19:27:38,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 116 remaining) [2024-10-11 19:27:38,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 116 remaining) [2024-10-11 19:27:38,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 116 remaining) [2024-10-11 19:27:38,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 116 remaining) [2024-10-11 19:27:38,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 116 remaining) [2024-10-11 19:27:38,911 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 116 remaining) [2024-10-11 19:27:38,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 116 remaining) [2024-10-11 19:27:38,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 116 remaining) [2024-10-11 19:27:38,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 116 remaining) [2024-10-11 19:27:38,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 116 remaining) [2024-10-11 19:27:38,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 116 remaining) [2024-10-11 19:27:38,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 116 remaining) [2024-10-11 19:27:38,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 116 remaining) [2024-10-11 19:27:38,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 116 remaining) [2024-10-11 19:27:38,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 116 remaining) [2024-10-11 19:27:38,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 116 remaining) [2024-10-11 19:27:38,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 116 remaining) [2024-10-11 19:27:38,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 116 remaining) [2024-10-11 19:27:38,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 116 remaining) [2024-10-11 19:27:38,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 116 remaining) [2024-10-11 19:27:38,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 116 remaining) [2024-10-11 19:27:38,914 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 116 remaining) [2024-10-11 19:27:38,914 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 116 remaining) [2024-10-11 19:27:38,914 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 116 remaining) [2024-10-11 19:27:38,914 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (29 of 116 remaining) [2024-10-11 19:27:38,914 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 116 remaining) [2024-10-11 19:27:38,914 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 116 remaining) [2024-10-11 19:27:38,914 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 116 remaining) [2024-10-11 19:27:38,914 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 116 remaining) [2024-10-11 19:27:38,915 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (24 of 116 remaining) [2024-10-11 19:27:38,915 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 116 remaining) [2024-10-11 19:27:38,915 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 116 remaining) [2024-10-11 19:27:38,915 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 116 remaining) [2024-10-11 19:27:38,915 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 116 remaining) [2024-10-11 19:27:38,915 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 116 remaining) [2024-10-11 19:27:38,915 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 116 remaining) [2024-10-11 19:27:38,915 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 116 remaining) [2024-10-11 19:27:38,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 116 remaining) [2024-10-11 19:27:38,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 116 remaining) [2024-10-11 19:27:38,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 116 remaining) [2024-10-11 19:27:38,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 116 remaining) [2024-10-11 19:27:38,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 116 remaining) [2024-10-11 19:27:38,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 116 remaining) [2024-10-11 19:27:38,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 116 remaining) [2024-10-11 19:27:38,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 116 remaining) [2024-10-11 19:27:38,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 116 remaining) [2024-10-11 19:27:38,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 116 remaining) [2024-10-11 19:27:38,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 116 remaining) [2024-10-11 19:27:38,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 116 remaining) [2024-10-11 19:27:38,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 116 remaining) [2024-10-11 19:27:38,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 116 remaining) [2024-10-11 19:27:38,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 116 remaining) [2024-10-11 19:27:38,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 116 remaining) [2024-10-11 19:27:38,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 116 remaining) [2024-10-11 19:27:38,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 19:27:38,918 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:27:38,918 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 19:27:38,918 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 19:27:39,064 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:27:39,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 205 transitions, 428 flow [2024-10-11 19:27:39,106 INFO L124 PetriNetUnfolderBase]: 24/219 cut-off events. [2024-10-11 19:27:39,106 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 19:27:39,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 219 events. 24/219 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1393 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 200. Up to 4 conditions per place. [2024-10-11 19:27:39,109 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 205 transitions, 428 flow [2024-10-11 19:27:39,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 205 transitions, 428 flow [2024-10-11 19:27:39,120 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:27:39,121 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;@37a2d656, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:27:39,121 INFO L334 AbstractCegarLoop]: Starting to check reachability of 154 error locations. [2024-10-11 19:27:39,122 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:27:39,123 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-11 19:27:39,123 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:27:39,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:39,123 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:27:39,123 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 151 more)] === [2024-10-11 19:27:39,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:39,124 INFO L85 PathProgramCache]: Analyzing trace with hash 906089, now seen corresponding path program 1 times [2024-10-11 19:27:39,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:39,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560241119] [2024-10-11 19:27:39,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:39,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:27:39,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:27:39,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:27:39,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560241119] [2024-10-11 19:27:39,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560241119] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:27:39,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:27:39,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:27:39,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092425672] [2024-10-11 19:27:39,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:27:39,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:27:39,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:27:39,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:27:39,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:27:39,134 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 205 [2024-10-11 19:27:39,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 205 transitions, 428 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) [2024-10-11 19:27:39,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:27:39,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 205 [2024-10-11 19:27:39,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand