./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:42:18,914 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:42:18,996 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:42:19,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:42:19,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:42:19,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:42:19,026 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:42:19,026 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:42:19,027 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:42:19,028 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:42:19,029 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:42:19,029 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:42:19,030 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:42:19,030 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:42:19,030 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:42:19,031 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:42:19,031 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:42:19,034 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:42:19,034 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:42:19,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:42:19,035 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:42:19,035 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:42:19,035 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:42:19,036 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:42:19,036 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:42:19,036 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:42:19,036 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:42:19,037 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:42:19,037 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:42:19,038 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:42:19,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:42:19,039 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:42:19,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:42:19,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:42:19,040 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:42:19,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:42:19,040 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:42:19,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:42:19,041 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:42:19,041 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:42:19,041 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:42:19,041 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:42:19,041 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c [2024-11-09 10:42:19,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:42:19,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:42:19,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:42:19,311 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:42:19,311 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:42:19,312 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i [2024-11-09 10:42:20,879 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:42:21,143 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:42:21,146 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i [2024-11-09 10:42:21,163 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/325094d79/7c31e240bfd64f4b839d7afc25f9d889/FLAGb4732dda7 [2024-11-09 10:42:21,175 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/325094d79/7c31e240bfd64f4b839d7afc25f9d889 [2024-11-09 10:42:21,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:42:21,181 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:42:21,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:42:21,184 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:42:21,190 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:42:21,191 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:42:21" (1/1) ... [2024-11-09 10:42:21,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ef11dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:21, skipping insertion in model container [2024-11-09 10:42:21,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:42:21" (1/1) ... [2024-11-09 10:42:21,242 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:42:21,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:42:21,722 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:42:21,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:42:21,829 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:42:21,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:21 WrapperNode [2024-11-09 10:42:21,830 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:42:21,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:42:21,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:42:21,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:42:21,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:21" (1/1) ... [2024-11-09 10:42:21,854 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:21" (1/1) ... [2024-11-09 10:42:21,882 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2024-11-09 10:42:21,885 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:42:21,886 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:42:21,886 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:42:21,887 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:42:21,899 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:21" (1/1) ... [2024-11-09 10:42:21,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:21" (1/1) ... [2024-11-09 10:42:21,905 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:21" (1/1) ... [2024-11-09 10:42:21,920 INFO L175 MemorySlicer]: Split 18 memory accesses to 4 slices as follows [2, 5, 6, 5]. 33 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 1, 5]. The 2 writes are split as follows [0, 0, 2, 0]. [2024-11-09 10:42:21,921 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:21" (1/1) ... [2024-11-09 10:42:21,921 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:21" (1/1) ... [2024-11-09 10:42:21,935 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:21" (1/1) ... [2024-11-09 10:42:21,938 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:21" (1/1) ... [2024-11-09 10:42:21,944 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:21" (1/1) ... [2024-11-09 10:42:21,946 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:21" (1/1) ... [2024-11-09 10:42:21,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:42:21,954 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:42:21,954 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:42:21,954 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:42:21,955 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:21" (1/1) ... [2024-11-09 10:42:21,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:42:21,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:42:22,007 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 10:42:22,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 10:42:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 10:42:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 10:42:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 10:42:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 10:42:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 10:42:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 10:42:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 10:42:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 10:42:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 10:42:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:42:22,063 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-09 10:42:22,064 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-09 10:42:22,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:42:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:42:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 10:42:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 10:42:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 10:42:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:42:22,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:42:22,068 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:42:22,236 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:42:22,240 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:42:22,515 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:42:22,517 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:42:22,694 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:42:22,694 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-09 10:42:22,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:42:22 BoogieIcfgContainer [2024-11-09 10:42:22,695 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:42:22,699 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:42:22,699 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:42:22,702 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:42:22,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:42:21" (1/3) ... [2024-11-09 10:42:22,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751b0e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:42:22, skipping insertion in model container [2024-11-09 10:42:22,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:21" (2/3) ... [2024-11-09 10:42:22,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751b0e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:42:22, skipping insertion in model container [2024-11-09 10:42:22,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:42:22" (3/3) ... [2024-11-09 10:42:22,706 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_21-deref_read_racing.i [2024-11-09 10:42:22,723 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:42:22,723 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-11-09 10:42:22,723 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:42:22,773 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:42:22,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 64 transitions, 132 flow [2024-11-09 10:42:22,850 INFO L124 PetriNetUnfolderBase]: 14/89 cut-off events. [2024-11-09 10:42:22,851 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:42:22,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 89 events. 14/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 305 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2024-11-09 10:42:22,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 64 transitions, 132 flow [2024-11-09 10:42:22,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 64 transitions, 132 flow [2024-11-09 10:42:22,874 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:42:22,880 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;@921df65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:42:22,881 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-09 10:42:22,884 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:42:22,885 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 10:42:22,885 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:42:22,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:22,886 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:42:22,886 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 10:42:22,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:22,891 INFO L85 PathProgramCache]: Analyzing trace with hash 315801, now seen corresponding path program 1 times [2024-11-09 10:42:22,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:22,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488288969] [2024-11-09 10:42:22,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:22,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:23,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:23,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488288969] [2024-11-09 10:42:23,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488288969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:42:23,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:42:23,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:42:23,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274127165] [2024-11-09 10:42:23,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:42:23,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:42:23,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:23,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:42:23,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:42:23,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-11-09 10:42:23,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 64 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:23,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:23,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-11-09 10:42:23,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:23,445 INFO L124 PetriNetUnfolderBase]: 121/445 cut-off events. [2024-11-09 10:42:23,488 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:42:23,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 445 events. 121/445 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2449 event pairs, 100 based on Foata normal form. 83/466 useless extension candidates. Maximal degree in co-relation 701. Up to 254 conditions per place. [2024-11-09 10:42:23,495 INFO L140 encePairwiseOnDemand]: 50/64 looper letters, 35 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-11-09 10:42:23,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 210 flow [2024-11-09 10:42:23,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:42:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:42:23,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2024-11-09 10:42:23,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2024-11-09 10:42:23,513 INFO L175 Difference]: Start difference. First operand has 57 places, 64 transitions, 132 flow. Second operand 3 states and 142 transitions. [2024-11-09 10:42:23,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 210 flow [2024-11-09 10:42:23,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 210 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:42:23,524 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 120 flow [2024-11-09 10:42:23,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-11-09 10:42:23,532 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2024-11-09 10:42:23,533 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 120 flow [2024-11-09 10:42:23,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:23,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:23,534 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 10:42:23,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:42:23,535 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 10:42:23,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:23,537 INFO L85 PathProgramCache]: Analyzing trace with hash -397124900, now seen corresponding path program 1 times [2024-11-09 10:42:23,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:23,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359549620] [2024-11-09 10:42:23,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:23,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:23,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:23,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359549620] [2024-11-09 10:42:23,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359549620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:42:23,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470166773] [2024-11-09 10:42:23,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:23,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:42:23,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:42:23,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:42:23,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:42:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:23,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 10:42:23,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:42:23,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:23,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:42:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:23,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470166773] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:42:23,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:42:23,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-09 10:42:23,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941087109] [2024-11-09 10:42:23,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:42:23,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:42:23,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:23,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:42:23,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:42:23,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-11-09 10:42:23,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 120 flow. Second operand has 7 states, 7 states have (on average 31.428571428571427) internal successors, (220), 7 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:23,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:23,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-11-09 10:42:23,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:24,053 INFO L124 PetriNetUnfolderBase]: 33/141 cut-off events. [2024-11-09 10:42:24,053 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-09 10:42:24,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 141 events. 33/141 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 440 event pairs, 20 based on Foata normal form. 24/151 useless extension candidates. Maximal degree in co-relation 237. Up to 69 conditions per place. [2024-11-09 10:42:24,055 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 27 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2024-11-09 10:42:24,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 164 flow [2024-11-09 10:42:24,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:42:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:42:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-11-09 10:42:24,057 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57421875 [2024-11-09 10:42:24,057 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 120 flow. Second operand 4 states and 147 transitions. [2024-11-09 10:42:24,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 164 flow [2024-11-09 10:42:24,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 48 transitions, 158 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:42:24,059 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 78 flow [2024-11-09 10:42:24,059 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2024-11-09 10:42:24,060 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -16 predicate places. [2024-11-09 10:42:24,060 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 78 flow [2024-11-09 10:42:24,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.428571428571427) internal successors, (220), 7 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:24,061 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:24,061 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-09 10:42:24,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 10:42:24,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:42:24,266 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-09 10:42:24,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:24,267 INFO L85 PathProgramCache]: Analyzing trace with hash 574030373, now seen corresponding path program 1 times [2024-11-09 10:42:24,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:24,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471058606] [2024-11-09 10:42:24,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:24,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:42:24,292 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:42:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:42:24,330 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:42:24,331 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:42:24,332 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-09 10:42:24,334 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX (20 of 22 remaining) [2024-11-09 10:42:24,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (19 of 22 remaining) [2024-11-09 10:42:24,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 22 remaining) [2024-11-09 10:42:24,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 22 remaining) [2024-11-09 10:42:24,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (16 of 22 remaining) [2024-11-09 10:42:24,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 22 remaining) [2024-11-09 10:42:24,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 22 remaining) [2024-11-09 10:42:24,337 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 22 remaining) [2024-11-09 10:42:24,338 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 22 remaining) [2024-11-09 10:42:24,338 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 22 remaining) [2024-11-09 10:42:24,338 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 22 remaining) [2024-11-09 10:42:24,339 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 22 remaining) [2024-11-09 10:42:24,339 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 22 remaining) [2024-11-09 10:42:24,339 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 22 remaining) [2024-11-09 10:42:24,339 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 22 remaining) [2024-11-09 10:42:24,339 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 22 remaining) [2024-11-09 10:42:24,339 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 22 remaining) [2024-11-09 10:42:24,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 22 remaining) [2024-11-09 10:42:24,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 22 remaining) [2024-11-09 10:42:24,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 22 remaining) [2024-11-09 10:42:24,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 22 remaining) [2024-11-09 10:42:24,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:42:24,341 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-09 10:42:24,346 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:42:24,350 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 10:42:24,385 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:42:24,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 100 transitions, 210 flow [2024-11-09 10:42:24,409 INFO L124 PetriNetUnfolderBase]: 24/151 cut-off events. [2024-11-09 10:42:24,411 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:42:24,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 151 events. 24/151 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 640 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 96. Up to 6 conditions per place. [2024-11-09 10:42:24,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 100 transitions, 210 flow [2024-11-09 10:42:24,417 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 100 transitions, 210 flow [2024-11-09 10:42:24,419 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:42:24,420 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;@921df65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:42:24,421 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-09 10:42:24,422 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:42:24,423 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 10:42:24,423 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:42:24,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:24,424 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:42:24,424 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:42:24,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:24,424 INFO L85 PathProgramCache]: Analyzing trace with hash 415101, now seen corresponding path program 1 times [2024-11-09 10:42:24,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:24,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161907021] [2024-11-09 10:42:24,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:24,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:24,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:24,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:24,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161907021] [2024-11-09 10:42:24,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161907021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:42:24,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:42:24,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:42:24,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891024697] [2024-11-09 10:42:24,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:42:24,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:42:24,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:24,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:42:24,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:42:24,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 100 [2024-11-09 10:42:24,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 100 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:24,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:24,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 100 [2024-11-09 10:42:24,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:25,360 INFO L124 PetriNetUnfolderBase]: 3157/7121 cut-off events. [2024-11-09 10:42:25,361 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-09 10:42:25,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12195 conditions, 7121 events. 3157/7121 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 60398 event pairs, 3146 based on Foata normal form. 1632/7958 useless extension candidates. Maximal degree in co-relation 8438. Up to 5018 conditions per place. [2024-11-09 10:42:25,421 INFO L140 encePairwiseOnDemand]: 80/100 looper letters, 48 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2024-11-09 10:42:25,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 97 transitions, 304 flow [2024-11-09 10:42:25,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:42:25,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:42:25,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2024-11-09 10:42:25,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7166666666666667 [2024-11-09 10:42:25,425 INFO L175 Difference]: Start difference. First operand has 89 places, 100 transitions, 210 flow. Second operand 3 states and 215 transitions. [2024-11-09 10:42:25,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 97 transitions, 304 flow [2024-11-09 10:42:25,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 97 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:42:25,428 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 190 flow [2024-11-09 10:42:25,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2024-11-09 10:42:25,429 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 2 predicate places. [2024-11-09 10:42:25,430 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 190 flow [2024-11-09 10:42:25,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:25,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:25,430 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 10:42:25,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:42:25,431 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:42:25,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:25,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1118318269, now seen corresponding path program 1 times [2024-11-09 10:42:25,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:25,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355718975] [2024-11-09 10:42:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:25,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:25,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:25,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:25,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355718975] [2024-11-09 10:42:25,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355718975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:42:25,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618796045] [2024-11-09 10:42:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:25,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:42:25,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:42:25,530 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:42:25,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:42:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:25,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 10:42:25,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:42:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:25,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:42:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:25,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618796045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:42:25,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:42:25,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-09 10:42:25,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075738808] [2024-11-09 10:42:25,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:42:25,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:42:25,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:25,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:42:25,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:42:25,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 100 [2024-11-09 10:42:25,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 49.42857142857143) internal successors, (346), 7 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:25,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:25,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 100 [2024-11-09 10:42:25,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:26,470 INFO L124 PetriNetUnfolderBase]: 2805/6259 cut-off events. [2024-11-09 10:42:26,471 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2024-11-09 10:42:26,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11056 conditions, 6259 events. 2805/6259 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 53101 event pairs, 154 based on Foata normal form. 168/6142 useless extension candidates. Maximal degree in co-relation 10952. Up to 2857 conditions per place. [2024-11-09 10:42:26,520 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 91 selfloop transitions, 4 changer transitions 0/142 dead transitions. [2024-11-09 10:42:26,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 142 transitions, 494 flow [2024-11-09 10:42:26,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:42:26,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:42:26,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 333 transitions. [2024-11-09 10:42:26,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.666 [2024-11-09 10:42:26,523 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 190 flow. Second operand 5 states and 333 transitions. [2024-11-09 10:42:26,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 142 transitions, 494 flow [2024-11-09 10:42:26,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 142 transitions, 492 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:42:26,529 INFO L231 Difference]: Finished difference. Result has 93 places, 83 transitions, 192 flow [2024-11-09 10:42:26,529 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=93, PETRI_TRANSITIONS=83} [2024-11-09 10:42:26,530 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, 4 predicate places. [2024-11-09 10:42:26,530 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 83 transitions, 192 flow [2024-11-09 10:42:26,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 49.42857142857143) internal successors, (346), 7 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:26,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:26,531 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:42:26,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 10:42:26,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:42:26,732 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:42:26,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:26,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1693868129, now seen corresponding path program 1 times [2024-11-09 10:42:26,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:26,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089131471] [2024-11-09 10:42:26,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:26,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:26,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:26,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:26,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089131471] [2024-11-09 10:42:26,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089131471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:42:26,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:42:26,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:42:26,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773731352] [2024-11-09 10:42:26,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:42:26,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:42:26,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:26,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:42:26,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:42:26,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 100 [2024-11-09 10:42:26,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 83 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:26,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:26,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 100 [2024-11-09 10:42:26,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:27,574 INFO L124 PetriNetUnfolderBase]: 2805/6001 cut-off events. [2024-11-09 10:42:27,574 INFO L125 PetriNetUnfolderBase]: For 886/886 co-relation queries the response was YES. [2024-11-09 10:42:27,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11087 conditions, 6001 events. 2805/6001 cut-off events. For 886/886 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 47857 event pairs, 2805 based on Foata normal form. 0/5839 useless extension candidates. Maximal degree in co-relation 7988. Up to 4440 conditions per place. [2024-11-09 10:42:27,609 INFO L140 encePairwiseOnDemand]: 91/100 looper letters, 35 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2024-11-09 10:42:27,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 75 transitions, 248 flow [2024-11-09 10:42:27,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:42:27,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:42:27,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-09 10:42:27,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5433333333333333 [2024-11-09 10:42:27,612 INFO L175 Difference]: Start difference. First operand has 93 places, 83 transitions, 192 flow. Second operand 3 states and 163 transitions. [2024-11-09 10:42:27,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 75 transitions, 248 flow [2024-11-09 10:42:27,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 75 transitions, 238 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-09 10:42:27,616 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 168 flow [2024-11-09 10:42:27,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2024-11-09 10:42:27,618 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -5 predicate places. [2024-11-09 10:42:27,620 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 168 flow [2024-11-09 10:42:27,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:27,620 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:27,621 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:42:27,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:42:27,621 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:42:27,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:27,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1693868128, now seen corresponding path program 1 times [2024-11-09 10:42:27,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:27,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398213058] [2024-11-09 10:42:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:27,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:27,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:27,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398213058] [2024-11-09 10:42:27,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398213058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:42:27,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:42:27,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:42:27,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245151683] [2024-11-09 10:42:27,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:42:27,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:42:27,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:27,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:42:27,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:42:27,763 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 100 [2024-11-09 10:42:27,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:27,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:27,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 100 [2024-11-09 10:42:27,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:28,346 INFO L124 PetriNetUnfolderBase]: 2805/5743 cut-off events. [2024-11-09 10:42:28,347 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2024-11-09 10:42:28,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10384 conditions, 5743 events. 2805/5743 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 43818 event pairs, 2805 based on Foata normal form. 0/5581 useless extension candidates. Maximal degree in co-relation 10375. Up to 4440 conditions per place. [2024-11-09 10:42:28,377 INFO L140 encePairwiseOnDemand]: 91/100 looper letters, 34 selfloop transitions, 1 changer transitions 1/67 dead transitions. [2024-11-09 10:42:28,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 67 transitions, 224 flow [2024-11-09 10:42:28,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:42:28,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:42:28,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-09 10:42:28,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5433333333333333 [2024-11-09 10:42:28,379 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 168 flow. Second operand 3 states and 163 transitions. [2024-11-09 10:42:28,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 67 transitions, 224 flow [2024-11-09 10:42:28,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 67 transitions, 223 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:42:28,380 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 151 flow [2024-11-09 10:42:28,381 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-11-09 10:42:28,382 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -12 predicate places. [2024-11-09 10:42:28,382 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 151 flow [2024-11-09 10:42:28,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:28,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:28,382 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-09 10:42:28,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:42:28,383 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-09 10:42:28,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:28,383 INFO L85 PathProgramCache]: Analyzing trace with hash 88060204, now seen corresponding path program 1 times [2024-11-09 10:42:28,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:28,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668229803] [2024-11-09 10:42:28,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:28,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:42:28,397 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:42:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:42:28,419 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:42:28,420 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:42:28,420 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 30 remaining) [2024-11-09 10:42:28,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX (28 of 30 remaining) [2024-11-09 10:42:28,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (27 of 30 remaining) [2024-11-09 10:42:28,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 30 remaining) [2024-11-09 10:42:28,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 30 remaining) [2024-11-09 10:42:28,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (24 of 30 remaining) [2024-11-09 10:42:28,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 30 remaining) [2024-11-09 10:42:28,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 30 remaining) [2024-11-09 10:42:28,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 30 remaining) [2024-11-09 10:42:28,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 30 remaining) [2024-11-09 10:42:28,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 30 remaining) [2024-11-09 10:42:28,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 30 remaining) [2024-11-09 10:42:28,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 30 remaining) [2024-11-09 10:42:28,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 30 remaining) [2024-11-09 10:42:28,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 30 remaining) [2024-11-09 10:42:28,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 30 remaining) [2024-11-09 10:42:28,422 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 30 remaining) [2024-11-09 10:42:28,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 30 remaining) [2024-11-09 10:42:28,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 30 remaining) [2024-11-09 10:42:28,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 30 remaining) [2024-11-09 10:42:28,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 30 remaining) [2024-11-09 10:42:28,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 30 remaining) [2024-11-09 10:42:28,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 30 remaining) [2024-11-09 10:42:28,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 30 remaining) [2024-11-09 10:42:28,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 30 remaining) [2024-11-09 10:42:28,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 30 remaining) [2024-11-09 10:42:28,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 30 remaining) [2024-11-09 10:42:28,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 30 remaining) [2024-11-09 10:42:28,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 30 remaining) [2024-11-09 10:42:28,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 30 remaining) [2024-11-09 10:42:28,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:42:28,425 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-09 10:42:28,426 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:42:28,426 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 10:42:28,460 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:42:28,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 136 transitions, 290 flow [2024-11-09 10:42:28,480 INFO L124 PetriNetUnfolderBase]: 34/213 cut-off events. [2024-11-09 10:42:28,480 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 10:42:28,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 213 events. 34/213 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 966 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 158. Up to 8 conditions per place. [2024-11-09 10:42:28,482 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 136 transitions, 290 flow [2024-11-09 10:42:28,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 136 transitions, 290 flow [2024-11-09 10:42:28,486 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:42:28,486 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;@921df65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:42:28,487 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-09 10:42:28,488 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:42:28,489 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 10:42:28,489 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:42:28,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:28,489 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:42:28,489 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 10:42:28,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:28,490 INFO L85 PathProgramCache]: Analyzing trace with hash 550149, now seen corresponding path program 1 times [2024-11-09 10:42:28,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:28,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431387884] [2024-11-09 10:42:28,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:28,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:28,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:28,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431387884] [2024-11-09 10:42:28,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431387884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:42:28,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:42:28,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:42:28,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660109463] [2024-11-09 10:42:28,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:42:28,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:42:28,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:28,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:42:28,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:42:28,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 136 [2024-11-09 10:42:28,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 136 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:28,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:28,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 136 [2024-11-09 10:42:28,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:37,277 INFO L124 PetriNetUnfolderBase]: 58597/104897 cut-off events. [2024-11-09 10:42:37,277 INFO L125 PetriNetUnfolderBase]: For 1036/1036 co-relation queries the response was YES. [2024-11-09 10:42:37,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186724 conditions, 104897 events. 58597/104897 cut-off events. For 1036/1036 co-relation queries the response was YES. Maximal size of possible extension queue 2594. Compared 1065394 event pairs, 58586 based on Foata normal form. 26880/122384 useless extension candidates. Maximal degree in co-relation 95464. Up to 81194 conditions per place. [2024-11-09 10:42:38,276 INFO L140 encePairwiseOnDemand]: 110/136 looper letters, 60 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2024-11-09 10:42:38,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 127 transitions, 396 flow [2024-11-09 10:42:38,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:42:38,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:42:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2024-11-09 10:42:38,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7034313725490197 [2024-11-09 10:42:38,278 INFO L175 Difference]: Start difference. First operand has 121 places, 136 transitions, 290 flow. Second operand 3 states and 287 transitions. [2024-11-09 10:42:38,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 127 transitions, 396 flow [2024-11-09 10:42:38,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 127 transitions, 394 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 10:42:38,285 INFO L231 Difference]: Finished difference. Result has 123 places, 114 transitions, 256 flow [2024-11-09 10:42:38,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=123, PETRI_TRANSITIONS=114} [2024-11-09 10:42:38,285 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, 2 predicate places. [2024-11-09 10:42:38,286 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 114 transitions, 256 flow [2024-11-09 10:42:38,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:38,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:38,287 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 10:42:38,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 10:42:38,288 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 10:42:38,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:38,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1289160002, now seen corresponding path program 1 times [2024-11-09 10:42:38,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:38,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564123221] [2024-11-09 10:42:38,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:38,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:38,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:38,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564123221] [2024-11-09 10:42:38,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564123221] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:42:38,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067497732] [2024-11-09 10:42:38,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:38,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:42:38,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:42:38,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:42:38,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:42:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:38,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 10:42:38,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:42:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:38,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:42:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:38,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067497732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:42:38,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:42:38,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-09 10:42:38,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509123101] [2024-11-09 10:42:38,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:42:38,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:42:38,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:38,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:42:38,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:42:38,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 136 [2024-11-09 10:42:38,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 114 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 67.42857142857143) internal successors, (472), 7 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:38,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:38,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 136 [2024-11-09 10:42:38,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:46,614 INFO L124 PetriNetUnfolderBase]: 53493/102594 cut-off events. [2024-11-09 10:42:46,615 INFO L125 PetriNetUnfolderBase]: For 6779/6779 co-relation queries the response was YES. [2024-11-09 10:42:46,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180976 conditions, 102594 events. 53493/102594 cut-off events. For 6779/6779 co-relation queries the response was YES. Maximal size of possible extension queue 2609. Compared 1125363 event pairs, 3168 based on Foata normal form. 1896/99766 useless extension candidates. Maximal degree in co-relation 15362. Up to 48217 conditions per place. [2024-11-09 10:42:47,418 INFO L140 encePairwiseOnDemand]: 132/136 looper letters, 149 selfloop transitions, 6 changer transitions 0/220 dead transitions. [2024-11-09 10:42:47,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 220 transitions, 780 flow [2024-11-09 10:42:47,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:42:47,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:42:47,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 549 transitions. [2024-11-09 10:42:47,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6727941176470589 [2024-11-09 10:42:47,420 INFO L175 Difference]: Start difference. First operand has 123 places, 114 transitions, 256 flow. Second operand 6 states and 549 transitions. [2024-11-09 10:42:47,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 220 transitions, 780 flow [2024-11-09 10:42:47,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 220 transitions, 778 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:42:47,429 INFO L231 Difference]: Finished difference. Result has 126 places, 115 transitions, 270 flow [2024-11-09 10:42:47,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=126, PETRI_TRANSITIONS=115} [2024-11-09 10:42:47,430 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, 5 predicate places. [2024-11-09 10:42:47,430 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 115 transitions, 270 flow [2024-11-09 10:42:47,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.42857142857143) internal successors, (472), 7 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:47,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:47,431 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:42:47,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 10:42:47,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:42:47,632 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 10:42:47,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:47,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1613608022, now seen corresponding path program 1 times [2024-11-09 10:42:47,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:47,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725277977] [2024-11-09 10:42:47,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:47,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:47,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:47,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725277977] [2024-11-09 10:42:47,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725277977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:42:47,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:42:47,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:42:47,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829835463] [2024-11-09 10:42:47,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:42:47,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:42:47,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:47,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:42:47,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:42:47,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 136 [2024-11-09 10:42:47,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 115 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:47,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:47,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 136 [2024-11-09 10:42:47,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:55,385 INFO L124 PetriNetUnfolderBase]: 53493/92797 cut-off events. [2024-11-09 10:42:55,385 INFO L125 PetriNetUnfolderBase]: For 11606/11606 co-relation queries the response was YES. [2024-11-09 10:42:55,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174924 conditions, 92797 events. 53493/92797 cut-off events. For 11606/11606 co-relation queries the response was YES. Maximal size of possible extension queue 2250. Compared 896571 event pairs, 53493 based on Foata normal form. 0/90849 useless extension candidates. Maximal degree in co-relation 129811. Up to 74136 conditions per place. [2024-11-09 10:42:55,872 INFO L140 encePairwiseOnDemand]: 123/136 looper letters, 49 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2024-11-09 10:42:55,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 103 transitions, 346 flow [2024-11-09 10:42:55,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:42:55,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:42:55,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 221 transitions. [2024-11-09 10:42:55,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-09 10:42:55,874 INFO L175 Difference]: Start difference. First operand has 126 places, 115 transitions, 270 flow. Second operand 3 states and 221 transitions. [2024-11-09 10:42:55,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 103 transitions, 346 flow [2024-11-09 10:42:55,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 103 transitions, 331 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-09 10:42:55,880 INFO L231 Difference]: Finished difference. Result has 113 places, 103 transitions, 233 flow [2024-11-09 10:42:55,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=113, PETRI_TRANSITIONS=103} [2024-11-09 10:42:55,881 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, -8 predicate places. [2024-11-09 10:42:55,881 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 103 transitions, 233 flow [2024-11-09 10:42:55,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:55,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:55,882 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:42:55,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 10:42:55,882 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 10:42:55,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:55,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1613608021, now seen corresponding path program 1 times [2024-11-09 10:42:55,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:55,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510079130] [2024-11-09 10:42:55,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:55,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:55,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:55,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:55,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510079130] [2024-11-09 10:42:55,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510079130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:42:55,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:42:55,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:42:55,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759381489] [2024-11-09 10:42:55,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:42:55,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:42:55,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:55,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:42:55,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:42:55,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 136 [2024-11-09 10:42:55,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 103 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:55,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:55,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 136 [2024-11-09 10:42:55,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:43:02,472 INFO L124 PetriNetUnfolderBase]: 53493/89739 cut-off events. [2024-11-09 10:43:02,473 INFO L125 PetriNetUnfolderBase]: For 4307/4307 co-relation queries the response was YES. [2024-11-09 10:43:02,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166237 conditions, 89739 events. 53493/89739 cut-off events. For 4307/4307 co-relation queries the response was YES. Maximal size of possible extension queue 2129. Compared 829856 event pairs, 53493 based on Foata normal form. 0/87791 useless extension candidates. Maximal degree in co-relation 166227. Up to 74136 conditions per place. [2024-11-09 10:43:02,940 INFO L140 encePairwiseOnDemand]: 123/136 looper letters, 48 selfloop transitions, 1 changer transitions 1/91 dead transitions. [2024-11-09 10:43:02,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 91 transitions, 309 flow [2024-11-09 10:43:02,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:43:02,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:43:02,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 221 transitions. [2024-11-09 10:43:02,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-09 10:43:02,943 INFO L175 Difference]: Start difference. First operand has 113 places, 103 transitions, 233 flow. Second operand 3 states and 221 transitions. [2024-11-09 10:43:02,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 91 transitions, 309 flow [2024-11-09 10:43:02,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 91 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:43:02,945 INFO L231 Difference]: Finished difference. Result has 102 places, 90 transitions, 208 flow [2024-11-09 10:43:02,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=102, PETRI_TRANSITIONS=90} [2024-11-09 10:43:02,945 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, -19 predicate places. [2024-11-09 10:43:02,946 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 90 transitions, 208 flow [2024-11-09 10:43:02,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:43:02,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:43:02,946 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:43:02,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 10:43:02,946 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 10:43:02,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:43:02,946 INFO L85 PathProgramCache]: Analyzing trace with hash -283972576, now seen corresponding path program 1 times [2024-11-09 10:43:02,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:43:02,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478376918] [2024-11-09 10:43:02,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:02,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:43:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:43:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:02,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:43:02,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478376918] [2024-11-09 10:43:02,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478376918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:43:02,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070791468] [2024-11-09 10:43:02,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:02,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:43:02,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:43:02,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:43:03,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 10:43:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:43:03,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 10:43:03,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:43:03,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:03,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:43:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:03,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070791468] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:43:03,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:43:03,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-09 10:43:03,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101550973] [2024-11-09 10:43:03,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:43:03,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 10:43:03,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:43:03,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 10:43:03,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-09 10:43:03,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 136 [2024-11-09 10:43:03,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 90 transitions, 208 flow. Second operand has 9 states, 9 states have (on average 67.88888888888889) internal successors, (611), 9 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:43:03,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:43:03,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 136 [2024-11-09 10:43:03,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:43:05,254 INFO L124 PetriNetUnfolderBase]: 18381/29306 cut-off events. [2024-11-09 10:43:05,255 INFO L125 PetriNetUnfolderBase]: For 7547/7547 co-relation queries the response was YES. [2024-11-09 10:43:05,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57589 conditions, 29306 events. 18381/29306 cut-off events. For 7547/7547 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 230018 event pairs, 1820 based on Foata normal form. 1872/30340 useless extension candidates. Maximal degree in co-relation 57578. Up to 19440 conditions per place. [2024-11-09 10:43:05,404 INFO L140 encePairwiseOnDemand]: 133/136 looper letters, 110 selfloop transitions, 4 changer transitions 0/145 dead transitions. [2024-11-09 10:43:05,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 145 transitions, 544 flow [2024-11-09 10:43:05,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:43:05,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:43:05,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 506 transitions. [2024-11-09 10:43:05,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6200980392156863 [2024-11-09 10:43:05,407 INFO L175 Difference]: Start difference. First operand has 102 places, 90 transitions, 208 flow. Second operand 6 states and 506 transitions. [2024-11-09 10:43:05,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 145 transitions, 544 flow [2024-11-09 10:43:05,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 145 transitions, 543 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:43:05,418 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 179 flow [2024-11-09 10:43:05,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2024-11-09 10:43:05,418 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, -32 predicate places. [2024-11-09 10:43:05,418 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 179 flow [2024-11-09 10:43:05,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.88888888888889) internal successors, (611), 9 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:43:05,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:43:05,419 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-09 10:43:05,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 10:43:05,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:43:05,620 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 10:43:05,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:43:05,620 INFO L85 PathProgramCache]: Analyzing trace with hash 754750970, now seen corresponding path program 1 times [2024-11-09 10:43:05,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:43:05,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076326505] [2024-11-09 10:43:05,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:05,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:43:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:43:05,635 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:43:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:43:05,649 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:43:05,649 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:43:05,649 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 38 remaining) [2024-11-09 10:43:05,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX (36 of 38 remaining) [2024-11-09 10:43:05,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (35 of 38 remaining) [2024-11-09 10:43:05,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 38 remaining) [2024-11-09 10:43:05,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 38 remaining) [2024-11-09 10:43:05,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (32 of 38 remaining) [2024-11-09 10:43:05,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 38 remaining) [2024-11-09 10:43:05,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 38 remaining) [2024-11-09 10:43:05,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 38 remaining) [2024-11-09 10:43:05,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 38 remaining) [2024-11-09 10:43:05,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 38 remaining) [2024-11-09 10:43:05,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 38 remaining) [2024-11-09 10:43:05,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 38 remaining) [2024-11-09 10:43:05,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 38 remaining) [2024-11-09 10:43:05,651 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 38 remaining) [2024-11-09 10:43:05,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 38 remaining) [2024-11-09 10:43:05,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 38 remaining) [2024-11-09 10:43:05,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 38 remaining) [2024-11-09 10:43:05,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 38 remaining) [2024-11-09 10:43:05,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 38 remaining) [2024-11-09 10:43:05,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 38 remaining) [2024-11-09 10:43:05,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 38 remaining) [2024-11-09 10:43:05,652 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 38 remaining) [2024-11-09 10:43:05,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 38 remaining) [2024-11-09 10:43:05,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 38 remaining) [2024-11-09 10:43:05,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 38 remaining) [2024-11-09 10:43:05,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 38 remaining) [2024-11-09 10:43:05,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 38 remaining) [2024-11-09 10:43:05,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 38 remaining) [2024-11-09 10:43:05,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 38 remaining) [2024-11-09 10:43:05,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 38 remaining) [2024-11-09 10:43:05,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 38 remaining) [2024-11-09 10:43:05,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 38 remaining) [2024-11-09 10:43:05,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 38 remaining) [2024-11-09 10:43:05,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 38 remaining) [2024-11-09 10:43:05,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 38 remaining) [2024-11-09 10:43:05,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 38 remaining) [2024-11-09 10:43:05,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 38 remaining) [2024-11-09 10:43:05,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 10:43:05,655 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-09 10:43:05,656 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:43:05,656 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-09 10:43:05,684 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:43:05,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 172 transitions, 372 flow [2024-11-09 10:43:05,705 INFO L124 PetriNetUnfolderBase]: 44/275 cut-off events. [2024-11-09 10:43:05,706 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 10:43:05,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 275 events. 44/275 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1330 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 225. Up to 10 conditions per place. [2024-11-09 10:43:05,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 172 transitions, 372 flow [2024-11-09 10:43:05,712 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 172 transitions, 372 flow [2024-11-09 10:43:05,713 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:43:05,713 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;@921df65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:43:05,713 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-11-09 10:43:05,714 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:43:05,714 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 10:43:05,715 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:43:05,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:43:05,716 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:43:05,716 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:43:05,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:43:05,716 INFO L85 PathProgramCache]: Analyzing trace with hash 720945, now seen corresponding path program 1 times [2024-11-09 10:43:05,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:43:05,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999649888] [2024-11-09 10:43:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:05,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:43:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:43:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:05,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:43:05,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999649888] [2024-11-09 10:43:05,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999649888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:43:05,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:43:05,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:43:05,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966603582] [2024-11-09 10:43:05,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:43:05,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:43:05,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:43:05,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:43:05,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:43:05,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 172 [2024-11-09 10:43:05,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 172 transitions, 372 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:43:05,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:43:05,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 172 [2024-11-09 10:43:05,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand