./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/reorder_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/reorder_5.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 0517a9ebb69eeca4ecbb6ac063832eb703719698fb2ee670ca348e2c511f9dfd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:19:42,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:19:42,772 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:19:42,775 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:19:42,777 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:19:42,807 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:19:42,808 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:19:42,809 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:19:42,809 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:19:42,811 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:19:42,811 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:19:42,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:19:42,812 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:19:42,814 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:19:42,814 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:19:42,814 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:19:42,815 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:19:42,815 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:19:42,815 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:19:42,815 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:19:42,816 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:19:42,820 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:19:42,820 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:19:42,820 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:19:42,820 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:19:42,821 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:19:42,821 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:19:42,821 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:19:42,821 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:19:42,822 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:19:42,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:19:42,822 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:19:42,822 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:19:42,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:19:42,823 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:19:42,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:19:42,824 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:19:42,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:19:42,824 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:19:42,824 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:19:42,825 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:19:42,826 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:19:42,826 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0517a9ebb69eeca4ecbb6ac063832eb703719698fb2ee670ca348e2c511f9dfd [2024-11-19 09:19:43,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:19:43,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:19:43,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:19:43,124 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:19:43,125 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:19:43,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/reorder_5.i [2024-11-19 09:19:44,584 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:19:44,866 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:19:44,866 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_5.i [2024-11-19 09:19:44,894 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85c87dc24/f1d26ff325384427805fef76bae01ea8/FLAG66b425229 [2024-11-19 09:19:45,160 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85c87dc24/f1d26ff325384427805fef76bae01ea8 [2024-11-19 09:19:45,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:19:45,164 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:19:45,165 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:19:45,165 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:19:45,171 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:19:45,171 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:19:45" (1/1) ... [2024-11-19 09:19:45,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ca72612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:45, skipping insertion in model container [2024-11-19 09:19:45,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:19:45" (1/1) ... [2024-11-19 09:19:45,233 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:19:45,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:19:45,750 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:19:45,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:19:45,900 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:19:45,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:45 WrapperNode [2024-11-19 09:19:45,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:19:45,902 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:19:45,902 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:19:45,903 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:19:45,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:45" (1/1) ... [2024-11-19 09:19:45,934 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:45" (1/1) ... [2024-11-19 09:19:45,965 INFO L138 Inliner]: procedures = 371, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 139 [2024-11-19 09:19:45,968 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:19:45,969 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:19:45,969 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:19:45,969 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:19:45,980 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:45" (1/1) ... [2024-11-19 09:19:45,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:45" (1/1) ... [2024-11-19 09:19:45,999 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:45" (1/1) ... [2024-11-19 09:19:46,033 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-19 09:19:46,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:45" (1/1) ... [2024-11-19 09:19:46,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:45" (1/1) ... [2024-11-19 09:19:46,044 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:45" (1/1) ... [2024-11-19 09:19:46,047 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:45" (1/1) ... [2024-11-19 09:19:46,048 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:45" (1/1) ... [2024-11-19 09:19:46,050 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:45" (1/1) ... [2024-11-19 09:19:46,056 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:19:46,078 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:19:46,078 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:19:46,078 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:19:46,079 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:45" (1/1) ... [2024-11-19 09:19:46,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:19:46,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:19:46,114 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) [2024-11-19 09:19:46,120 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 [2024-11-19 09:19:46,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 09:19:46,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 09:19:46,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 09:19:46,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 09:19:46,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 09:19:46,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 09:19:46,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 09:19:46,162 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2024-11-19 09:19:46,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2024-11-19 09:19:46,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 09:19:46,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 09:19:46,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 09:19:46,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:19:46,163 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2024-11-19 09:19:46,163 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2024-11-19 09:19:46,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:19:46,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 09:19:46,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 09:19:46,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:19:46,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:19:46,165 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:19:46,302 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:19:46,304 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:19:46,540 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:19:46,540 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:19:46,705 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:19:46,705 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 09:19:46,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:19:46 BoogieIcfgContainer [2024-11-19 09:19:46,706 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:19:46,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:19:46,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:19:46,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:19:46,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:19:45" (1/3) ... [2024-11-19 09:19:46,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64100286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:19:46, skipping insertion in model container [2024-11-19 09:19:46,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:45" (2/3) ... [2024-11-19 09:19:46,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64100286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:19:46, skipping insertion in model container [2024-11-19 09:19:46,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:19:46" (3/3) ... [2024-11-19 09:19:46,723 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_5.i [2024-11-19 09:19:46,739 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:19:46,740 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-19 09:19:46,740 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:19:46,797 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-19 09:19:46,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 56 transitions, 132 flow [2024-11-19 09:19:46,871 INFO L124 PetriNetUnfolderBase]: 12/131 cut-off events. [2024-11-19 09:19:46,872 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-19 09:19:46,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 131 events. 12/131 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 628 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 69. Up to 7 conditions per place. [2024-11-19 09:19:46,876 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 56 transitions, 132 flow [2024-11-19 09:19:46,880 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 56 transitions, 132 flow [2024-11-19 09:19:46,887 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:19:46,894 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;@69de3f17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:19:46,894 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-19 09:19:46,898 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:19:46,898 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-11-19 09:19:46,898 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:19:46,898 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:46,899 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-19 09:19:46,899 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2024-11-19 09:19:46,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:46,906 INFO L85 PathProgramCache]: Analyzing trace with hash 12383528, now seen corresponding path program 1 times [2024-11-19 09:19:46,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:46,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553778563] [2024-11-19 09:19:46,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:46,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:47,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:47,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:47,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553778563] [2024-11-19 09:19:47,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553778563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:47,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:47,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:19:47,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730961447] [2024-11-19 09:19:47,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:47,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:19:47,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:47,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:19:47,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:19:47,140 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 56 [2024-11-19 09:19:47,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 56 transitions, 132 flow. Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2024-11-19 09:19:47,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:47,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 56 [2024-11-19 09:19:47,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:47,276 INFO L124 PetriNetUnfolderBase]: 86/374 cut-off events. [2024-11-19 09:19:47,276 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-19 09:19:47,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 374 events. 86/374 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2551 event pairs, 71 based on Foata normal form. 24/272 useless extension candidates. Maximal degree in co-relation 373. Up to 190 conditions per place. [2024-11-19 09:19:47,282 INFO L140 encePairwiseOnDemand]: 52/56 looper letters, 24 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2024-11-19 09:19:47,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 172 flow [2024-11-19 09:19:47,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:19:47,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:19:47,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 84 transitions. [2024-11-19 09:19:47,295 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-19 09:19:47,297 INFO L175 Difference]: Start difference. First operand has 54 places, 56 transitions, 132 flow. Second operand 2 states and 84 transitions. [2024-11-19 09:19:47,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 172 flow [2024-11-19 09:19:47,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 172 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:19:47,304 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 124 flow [2024-11-19 09:19:47,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2024-11-19 09:19:47,311 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-11-19 09:19:47,311 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 124 flow [2024-11-19 09:19:47,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2024-11-19 09:19:47,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:47,312 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:19:47,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:19:47,313 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2024-11-19 09:19:47,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:47,313 INFO L85 PathProgramCache]: Analyzing trace with hash 383952134, now seen corresponding path program 1 times [2024-11-19 09:19:47,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:47,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111264071] [2024-11-19 09:19:47,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:47,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:47,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:47,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:47,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111264071] [2024-11-19 09:19:47,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111264071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:47,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:47,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:47,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912666304] [2024-11-19 09:19:47,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:47,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:47,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:47,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:47,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:47,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-11-19 09:19:47,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-11-19 09:19:47,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:47,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-11-19 09:19:47,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:47,707 INFO L124 PetriNetUnfolderBase]: 97/367 cut-off events. [2024-11-19 09:19:47,707 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-19 09:19:47,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 367 events. 97/367 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2443 event pairs, 65 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 604. Up to 168 conditions per place. [2024-11-19 09:19:47,712 INFO L140 encePairwiseOnDemand]: 52/56 looper letters, 27 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2024-11-19 09:19:47,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 184 flow [2024-11-19 09:19:47,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:47,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-19 09:19:47,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6130952380952381 [2024-11-19 09:19:47,717 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 124 flow. Second operand 3 states and 103 transitions. [2024-11-19 09:19:47,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 184 flow [2024-11-19 09:19:47,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 53 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:19:47,721 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 124 flow [2024-11-19 09:19:47,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-11-19 09:19:47,724 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-11-19 09:19:47,724 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 124 flow [2024-11-19 09:19:47,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-11-19 09:19:47,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:47,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:19:47,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:19:47,726 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2024-11-19 09:19:47,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:47,728 INFO L85 PathProgramCache]: Analyzing trace with hash 383952135, now seen corresponding path program 1 times [2024-11-19 09:19:47,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:47,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385264948] [2024-11-19 09:19:47,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:47,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:48,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:48,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:48,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385264948] [2024-11-19 09:19:48,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385264948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:48,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:48,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:19:48,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556712242] [2024-11-19 09:19:48,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:48,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:19:48,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:48,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:19:48,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:19:48,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 56 [2024-11-19 09:19:48,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 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) [2024-11-19 09:19:48,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:48,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 56 [2024-11-19 09:19:48,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:48,374 INFO L124 PetriNetUnfolderBase]: 184/694 cut-off events. [2024-11-19 09:19:48,374 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-19 09:19:48,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 694 events. 184/694 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5529 event pairs, 124 based on Foata normal form. 1/523 useless extension candidates. Maximal degree in co-relation 1169. Up to 215 conditions per place. [2024-11-19 09:19:48,379 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 47 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2024-11-19 09:19:48,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 298 flow [2024-11-19 09:19:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-11-19 09:19:48,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2024-11-19 09:19:48,381 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 124 flow. Second operand 4 states and 157 transitions. [2024-11-19 09:19:48,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 298 flow [2024-11-19 09:19:48,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 75 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:19:48,385 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 146 flow [2024-11-19 09:19:48,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-11-19 09:19:48,386 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-11-19 09:19:48,386 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 146 flow [2024-11-19 09:19:48,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 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) [2024-11-19 09:19:48,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:48,387 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:48,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:19:48,387 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2024-11-19 09:19:48,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:48,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1038331480, now seen corresponding path program 1 times [2024-11-19 09:19:48,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:48,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964023225] [2024-11-19 09:19:48,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:48,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:48,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:48,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:48,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964023225] [2024-11-19 09:19:48,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964023225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:48,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:48,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:19:48,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656894647] [2024-11-19 09:19:48,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:48,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:48,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:48,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:48,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:48,612 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 56 [2024-11-19 09:19:48,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-19 09:19:48,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:48,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 56 [2024-11-19 09:19:48,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:48,783 INFO L124 PetriNetUnfolderBase]: 226/744 cut-off events. [2024-11-19 09:19:48,783 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-19 09:19:48,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1321 conditions, 744 events. 226/744 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5965 event pairs, 198 based on Foata normal form. 1/518 useless extension candidates. Maximal degree in co-relation 1313. Up to 488 conditions per place. [2024-11-19 09:19:48,790 INFO L140 encePairwiseOnDemand]: 48/56 looper letters, 36 selfloop transitions, 7 changer transitions 2/66 dead transitions. [2024-11-19 09:19:48,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 269 flow [2024-11-19 09:19:48,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:48,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-11-19 09:19:48,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6116071428571429 [2024-11-19 09:19:48,792 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 146 flow. Second operand 4 states and 137 transitions. [2024-11-19 09:19:48,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 269 flow [2024-11-19 09:19:48,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:48,797 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 184 flow [2024-11-19 09:19:48,798 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2024-11-19 09:19:48,799 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2024-11-19 09:19:48,800 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 184 flow [2024-11-19 09:19:48,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-11-19 09:19:48,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:48,801 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:48,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:19:48,801 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2024-11-19 09:19:48,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:48,802 INFO L85 PathProgramCache]: Analyzing trace with hash -2123503166, now seen corresponding path program 1 times [2024-11-19 09:19:48,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:48,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209085402] [2024-11-19 09:19:48,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:48,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:48,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:48,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:48,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209085402] [2024-11-19 09:19:48,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209085402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:48,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:48,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:48,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269840317] [2024-11-19 09:19:48,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:48,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:48,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:48,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:48,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:48,879 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-11-19 09:19:48,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-11-19 09:19:48,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:48,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-11-19 09:19:48,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:49,007 INFO L124 PetriNetUnfolderBase]: 200/664 cut-off events. [2024-11-19 09:19:49,007 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2024-11-19 09:19:49,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 664 events. 200/664 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5154 event pairs, 142 based on Foata normal form. 0/583 useless extension candidates. Maximal degree in co-relation 1281. Up to 349 conditions per place. [2024-11-19 09:19:49,011 INFO L140 encePairwiseOnDemand]: 52/56 looper letters, 30 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2024-11-19 09:19:49,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 254 flow [2024-11-19 09:19:49,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:49,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:49,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-19 09:19:49,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6130952380952381 [2024-11-19 09:19:49,013 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 184 flow. Second operand 3 states and 103 transitions. [2024-11-19 09:19:49,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 254 flow [2024-11-19 09:19:49,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 243 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-19 09:19:49,016 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 177 flow [2024-11-19 09:19:49,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-11-19 09:19:49,017 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2024-11-19 09:19:49,017 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 177 flow [2024-11-19 09:19:49,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-11-19 09:19:49,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:49,018 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:49,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:19:49,018 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2024-11-19 09:19:49,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:49,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2123503165, now seen corresponding path program 1 times [2024-11-19 09:19:49,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:49,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842394323] [2024-11-19 09:19:49,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:49,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:49,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:49,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842394323] [2024-11-19 09:19:49,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842394323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:49,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:49,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:19:49,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606257532] [2024-11-19 09:19:49,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:49,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:19:49,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:49,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:19:49,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:19:49,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 56 [2024-11-19 09:19:49,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:49,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:49,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 56 [2024-11-19 09:19:49,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:49,380 INFO L124 PetriNetUnfolderBase]: 271/768 cut-off events. [2024-11-19 09:19:49,381 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2024-11-19 09:19:49,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1586 conditions, 768 events. 271/768 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5836 event pairs, 36 based on Foata normal form. 0/660 useless extension candidates. Maximal degree in co-relation 1576. Up to 238 conditions per place. [2024-11-19 09:19:49,386 INFO L140 encePairwiseOnDemand]: 43/56 looper letters, 41 selfloop transitions, 16 changer transitions 0/76 dead transitions. [2024-11-19 09:19:49,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 355 flow [2024-11-19 09:19:49,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:19:49,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:19:49,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2024-11-19 09:19:49,387 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-19 09:19:49,388 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 177 flow. Second operand 5 states and 170 transitions. [2024-11-19 09:19:49,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 355 flow [2024-11-19 09:19:49,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:19:49,391 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 266 flow [2024-11-19 09:19:49,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-11-19 09:19:49,392 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-11-19 09:19:49,392 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 266 flow [2024-11-19 09:19:49,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:49,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:49,393 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:49,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:19:49,393 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2024-11-19 09:19:49,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:49,394 INFO L85 PathProgramCache]: Analyzing trace with hash -335048156, now seen corresponding path program 1 times [2024-11-19 09:19:49,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:49,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571939349] [2024-11-19 09:19:49,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:49,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:49,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:49,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571939349] [2024-11-19 09:19:49,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571939349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:19:49,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566804911] [2024-11-19 09:19:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:49,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:19:49,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:19:49,649 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) [2024-11-19 09:19:49,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:19:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:49,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 09:19:49,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:19:49,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 09:19:49,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-19 09:19:49,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-19 09:19:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:49,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:19:50,023 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 09:19:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:50,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566804911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:19:50,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:19:50,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 4] total 12 [2024-11-19 09:19:50,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351842988] [2024-11-19 09:19:50,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:19:50,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 09:19:50,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:50,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 09:19:50,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-19 09:19:50,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 56 [2024-11-19 09:19:50,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 266 flow. Second operand has 14 states, 14 states have (on average 24.714285714285715) internal successors, (346), 14 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) [2024-11-19 09:19:50,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:50,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 56 [2024-11-19 09:19:50,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:50,463 INFO L124 PetriNetUnfolderBase]: 139/439 cut-off events. [2024-11-19 09:19:50,463 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2024-11-19 09:19:50,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1084 conditions, 439 events. 139/439 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2917 event pairs, 102 based on Foata normal form. 4/391 useless extension candidates. Maximal degree in co-relation 1071. Up to 263 conditions per place. [2024-11-19 09:19:50,467 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 42 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-11-19 09:19:50,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 71 transitions, 396 flow [2024-11-19 09:19:50,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:19:50,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:19:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-11-19 09:19:50,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5386904761904762 [2024-11-19 09:19:50,468 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 266 flow. Second operand 6 states and 181 transitions. [2024-11-19 09:19:50,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 71 transitions, 396 flow [2024-11-19 09:19:50,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 391 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:50,473 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 295 flow [2024-11-19 09:19:50,473 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=295, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2024-11-19 09:19:50,475 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2024-11-19 09:19:50,475 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 295 flow [2024-11-19 09:19:50,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.714285714285715) internal successors, (346), 14 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) [2024-11-19 09:19:50,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:50,476 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:50,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 09:19:50,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:19:50,681 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 12 more)] === [2024-11-19 09:19:50,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:50,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1796557912, now seen corresponding path program 1 times [2024-11-19 09:19:50,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:50,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093839352] [2024-11-19 09:19:50,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:50,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:19:50,697 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:19:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:19:50,723 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:19:50,723 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:19:50,724 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-11-19 09:19:50,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2024-11-19 09:19:50,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX (12 of 15 remaining) [2024-11-19 09:19:50,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (11 of 15 remaining) [2024-11-19 09:19:50,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2024-11-19 09:19:50,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2024-11-19 09:19:50,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2024-11-19 09:19:50,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2024-11-19 09:19:50,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2024-11-19 09:19:50,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2024-11-19 09:19:50,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2024-11-19 09:19:50,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2024-11-19 09:19:50,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2024-11-19 09:19:50,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 15 remaining) [2024-11-19 09:19:50,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2024-11-19 09:19:50,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 09:19:50,729 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:50,731 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:19:50,731 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 09:19:50,750 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-19 09:19:50,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 74 transitions, 192 flow [2024-11-19 09:19:50,781 INFO L124 PetriNetUnfolderBase]: 65/432 cut-off events. [2024-11-19 09:19:50,782 INFO L125 PetriNetUnfolderBase]: For 72/75 co-relation queries the response was YES. [2024-11-19 09:19:50,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 432 events. 65/432 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2627 event pairs, 1 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 267. Up to 32 conditions per place. [2024-11-19 09:19:50,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 74 transitions, 192 flow [2024-11-19 09:19:50,786 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 74 transitions, 192 flow [2024-11-19 09:19:50,789 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:19:50,789 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;@69de3f17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:19:50,789 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-19 09:19:50,793 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:19:50,793 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-11-19 09:19:50,793 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:19:50,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:50,794 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-19 09:19:50,794 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-19 09:19:50,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:50,794 INFO L85 PathProgramCache]: Analyzing trace with hash 14599976, now seen corresponding path program 1 times [2024-11-19 09:19:50,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:50,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455578581] [2024-11-19 09:19:50,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:50,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:50,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:50,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455578581] [2024-11-19 09:19:50,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455578581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:50,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:50,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:19:50,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077795168] [2024-11-19 09:19:50,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:50,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:19:50,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:50,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:19:50,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:19:50,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 74 [2024-11-19 09:19:50,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 74 transitions, 192 flow. Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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) [2024-11-19 09:19:50,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:50,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 74 [2024-11-19 09:19:50,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:51,314 INFO L124 PetriNetUnfolderBase]: 1996/4885 cut-off events. [2024-11-19 09:19:51,315 INFO L125 PetriNetUnfolderBase]: For 1152/1152 co-relation queries the response was YES. [2024-11-19 09:19:51,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8388 conditions, 4885 events. 1996/4885 cut-off events. For 1152/1152 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 46373 event pairs, 1718 based on Foata normal form. 532/4272 useless extension candidates. Maximal degree in co-relation 3145. Up to 3077 conditions per place. [2024-11-19 09:19:51,343 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 33 selfloop transitions, 0 changer transitions 0/69 dead transitions. [2024-11-19 09:19:51,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 248 flow [2024-11-19 09:19:51,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:19:51,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:19:51,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 110 transitions. [2024-11-19 09:19:51,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7432432432432432 [2024-11-19 09:19:51,345 INFO L175 Difference]: Start difference. First operand has 71 places, 74 transitions, 192 flow. Second operand 2 states and 110 transitions. [2024-11-19 09:19:51,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 248 flow [2024-11-19 09:19:51,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 248 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:19:51,349 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 182 flow [2024-11-19 09:19:51,349 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=182, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2024-11-19 09:19:51,350 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, -1 predicate places. [2024-11-19 09:19:51,351 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 182 flow [2024-11-19 09:19:51,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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) [2024-11-19 09:19:51,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:51,352 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:19:51,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 09:19:51,352 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-19 09:19:51,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:51,353 INFO L85 PathProgramCache]: Analyzing trace with hash 452662094, now seen corresponding path program 1 times [2024-11-19 09:19:51,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:51,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164333525] [2024-11-19 09:19:51,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:51,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:51,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:51,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:51,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164333525] [2024-11-19 09:19:51,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164333525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:51,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:51,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:51,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957467512] [2024-11-19 09:19:51,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:51,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:51,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:51,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:51,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:51,413 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 74 [2024-11-19 09:19:51,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-11-19 09:19:51,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:51,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 74 [2024-11-19 09:19:51,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:51,900 INFO L124 PetriNetUnfolderBase]: 2241/4979 cut-off events. [2024-11-19 09:19:51,901 INFO L125 PetriNetUnfolderBase]: For 811/811 co-relation queries the response was YES. [2024-11-19 09:19:51,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8879 conditions, 4979 events. 2241/4979 cut-off events. For 811/811 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 45580 event pairs, 1483 based on Foata normal form. 0/4133 useless extension candidates. Maximal degree in co-relation 8872. Up to 2701 conditions per place. [2024-11-19 09:19:51,938 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 39 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2024-11-19 09:19:51,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 73 transitions, 272 flow [2024-11-19 09:19:51,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:51,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:51,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-11-19 09:19:51,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6261261261261262 [2024-11-19 09:19:51,939 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 182 flow. Second operand 3 states and 139 transitions. [2024-11-19 09:19:51,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 73 transitions, 272 flow [2024-11-19 09:19:51,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:19:51,942 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 182 flow [2024-11-19 09:19:51,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2024-11-19 09:19:51,943 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, -1 predicate places. [2024-11-19 09:19:51,944 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 182 flow [2024-11-19 09:19:51,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-11-19 09:19:51,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:51,944 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:19:51,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 09:19:51,945 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-19 09:19:51,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:51,945 INFO L85 PathProgramCache]: Analyzing trace with hash 452662095, now seen corresponding path program 1 times [2024-11-19 09:19:51,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:51,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656286011] [2024-11-19 09:19:51,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:51,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:52,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:52,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:52,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656286011] [2024-11-19 09:19:52,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656286011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:52,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:52,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:19:52,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650809979] [2024-11-19 09:19:52,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:52,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:19:52,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:52,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:19:52,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:19:52,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 74 [2024-11-19 09:19:52,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 182 flow. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:52,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:52,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 74 [2024-11-19 09:19:52,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:53,109 INFO L124 PetriNetUnfolderBase]: 4433/9798 cut-off events. [2024-11-19 09:19:53,109 INFO L125 PetriNetUnfolderBase]: For 2286/2286 co-relation queries the response was YES. [2024-11-19 09:19:53,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17782 conditions, 9798 events. 4433/9798 cut-off events. For 2286/2286 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 99345 event pairs, 3470 based on Foata normal form. 1/8137 useless extension candidates. Maximal degree in co-relation 17774. Up to 3472 conditions per place. [2024-11-19 09:19:53,162 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 66 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2024-11-19 09:19:53,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 102 transitions, 436 flow [2024-11-19 09:19:53,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:53,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:53,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 208 transitions. [2024-11-19 09:19:53,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2024-11-19 09:19:53,164 INFO L175 Difference]: Start difference. First operand has 70 places, 67 transitions, 182 flow. Second operand 4 states and 208 transitions. [2024-11-19 09:19:53,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 102 transitions, 436 flow [2024-11-19 09:19:53,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 102 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:19:53,180 INFO L231 Difference]: Finished difference. Result has 73 places, 69 transitions, 204 flow [2024-11-19 09:19:53,181 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=73, PETRI_TRANSITIONS=69} [2024-11-19 09:19:53,181 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places. [2024-11-19 09:19:53,182 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 69 transitions, 204 flow [2024-11-19 09:19:53,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:53,182 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:53,182 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:53,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 09:19:53,182 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-19 09:19:53,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:53,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1495725480, now seen corresponding path program 1 times [2024-11-19 09:19:53,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:53,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069463854] [2024-11-19 09:19:53,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:53,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:53,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:53,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:53,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069463854] [2024-11-19 09:19:53,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069463854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:53,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:53,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:19:53,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619267739] [2024-11-19 09:19:53,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:53,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:53,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:53,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:53,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:53,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 74 [2024-11-19 09:19:53,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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) [2024-11-19 09:19:53,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:53,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 74 [2024-11-19 09:19:53,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:54,289 INFO L124 PetriNetUnfolderBase]: 5403/10775 cut-off events. [2024-11-19 09:19:54,290 INFO L125 PetriNetUnfolderBase]: For 1618/1618 co-relation queries the response was YES. [2024-11-19 09:19:54,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20079 conditions, 10775 events. 5403/10775 cut-off events. For 1618/1618 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 105034 event pairs, 4800 based on Foata normal form. 1/8394 useless extension candidates. Maximal degree in co-relation 20069. Up to 8400 conditions per place. [2024-11-19 09:19:54,353 INFO L140 encePairwiseOnDemand]: 66/74 looper letters, 46 selfloop transitions, 7 changer transitions 2/84 dead transitions. [2024-11-19 09:19:54,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 84 transitions, 351 flow [2024-11-19 09:19:54,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:54,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:54,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-11-19 09:19:54,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6047297297297297 [2024-11-19 09:19:54,355 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 204 flow. Second operand 4 states and 179 transitions. [2024-11-19 09:19:54,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 84 transitions, 351 flow [2024-11-19 09:19:54,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 84 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:54,358 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 248 flow [2024-11-19 09:19:54,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2024-11-19 09:19:54,359 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 6 predicate places. [2024-11-19 09:19:54,359 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 248 flow [2024-11-19 09:19:54,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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) [2024-11-19 09:19:54,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:54,360 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:54,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 09:19:54,360 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-19 09:19:54,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:54,361 INFO L85 PathProgramCache]: Analyzing trace with hash -877148662, now seen corresponding path program 1 times [2024-11-19 09:19:54,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:54,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990565484] [2024-11-19 09:19:54,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:54,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:54,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:54,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:54,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990565484] [2024-11-19 09:19:54,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990565484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:54,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:54,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:54,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551314905] [2024-11-19 09:19:54,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:54,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:54,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:54,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:54,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:54,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 74 [2024-11-19 09:19:54,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2024-11-19 09:19:54,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:54,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 74 [2024-11-19 09:19:54,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:55,474 INFO L124 PetriNetUnfolderBase]: 4735/9647 cut-off events. [2024-11-19 09:19:55,475 INFO L125 PetriNetUnfolderBase]: For 1681/1681 co-relation queries the response was YES. [2024-11-19 09:19:55,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18921 conditions, 9647 events. 4735/9647 cut-off events. For 1681/1681 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 93199 event pairs, 3252 based on Foata normal form. 0/8914 useless extension candidates. Maximal degree in co-relation 18909. Up to 5776 conditions per place. [2024-11-19 09:19:55,547 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 43 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2024-11-19 09:19:55,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 77 transitions, 350 flow [2024-11-19 09:19:55,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:55,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:55,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-11-19 09:19:55,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6261261261261262 [2024-11-19 09:19:55,549 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 248 flow. Second operand 3 states and 139 transitions. [2024-11-19 09:19:55,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 77 transitions, 350 flow [2024-11-19 09:19:55,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 77 transitions, 342 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:55,557 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 244 flow [2024-11-19 09:19:55,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2024-11-19 09:19:55,558 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 5 predicate places. [2024-11-19 09:19:55,559 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 244 flow [2024-11-19 09:19:55,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2024-11-19 09:19:55,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:55,559 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:55,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 09:19:55,560 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-19 09:19:55,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:55,560 INFO L85 PathProgramCache]: Analyzing trace with hash -877148661, now seen corresponding path program 1 times [2024-11-19 09:19:55,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:55,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907184541] [2024-11-19 09:19:55,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:55,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:55,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:55,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907184541] [2024-11-19 09:19:55,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907184541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:55,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:55,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:19:55,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404073460] [2024-11-19 09:19:55,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:55,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:19:55,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:55,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:19:55,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:19:55,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 74 [2024-11-19 09:19:55,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 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) [2024-11-19 09:19:55,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:55,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 74 [2024-11-19 09:19:55,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:56,969 INFO L124 PetriNetUnfolderBase]: 7410/13458 cut-off events. [2024-11-19 09:19:56,969 INFO L125 PetriNetUnfolderBase]: For 2709/2709 co-relation queries the response was YES. [2024-11-19 09:19:56,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27829 conditions, 13458 events. 7410/13458 cut-off events. For 2709/2709 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 126698 event pairs, 3132 based on Foata normal form. 0/12034 useless extension candidates. Maximal degree in co-relation 27817. Up to 5622 conditions per place. [2024-11-19 09:19:57,036 INFO L140 encePairwiseOnDemand]: 61/74 looper letters, 65 selfloop transitions, 16 changer transitions 0/108 dead transitions. [2024-11-19 09:19:57,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 108 transitions, 512 flow [2024-11-19 09:19:57,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:19:57,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:19:57,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 234 transitions. [2024-11-19 09:19:57,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6324324324324324 [2024-11-19 09:19:57,038 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 244 flow. Second operand 5 states and 234 transitions. [2024-11-19 09:19:57,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 108 transitions, 512 flow [2024-11-19 09:19:57,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 108 transitions, 502 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:19:57,068 INFO L231 Difference]: Finished difference. Result has 81 places, 80 transitions, 339 flow [2024-11-19 09:19:57,068 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2024-11-19 09:19:57,068 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 10 predicate places. [2024-11-19 09:19:57,069 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 339 flow [2024-11-19 09:19:57,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 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) [2024-11-19 09:19:57,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:57,069 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:57,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 09:19:57,069 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-19 09:19:57,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:57,070 INFO L85 PathProgramCache]: Analyzing trace with hash 911693631, now seen corresponding path program 1 times [2024-11-19 09:19:57,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:57,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471178334] [2024-11-19 09:19:57,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:57,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:57,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:57,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:57,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471178334] [2024-11-19 09:19:57,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471178334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:19:57,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530205134] [2024-11-19 09:19:57,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:57,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:19:57,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:19:57,279 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) [2024-11-19 09:19:57,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:19:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:57,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 09:19:57,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:19:57,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 09:19:57,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-19 09:19:57,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-19 09:19:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:57,449 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:19:57,543 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 09:19:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:57,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530205134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:19:57,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:19:57,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 11 [2024-11-19 09:19:57,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97449738] [2024-11-19 09:19:57,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:19:57,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 09:19:57,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:57,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 09:19:57,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:19:57,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 74 [2024-11-19 09:19:57,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 339 flow. Second operand has 13 states, 13 states have (on average 33.84615384615385) internal successors, (440), 13 states have internal predecessors, (440), 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) [2024-11-19 09:19:57,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:57,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 74 [2024-11-19 09:19:57,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:59,080 INFO L124 PetriNetUnfolderBase]: 5860/11582 cut-off events. [2024-11-19 09:19:59,081 INFO L125 PetriNetUnfolderBase]: For 3670/3670 co-relation queries the response was YES. [2024-11-19 09:19:59,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27190 conditions, 11582 events. 5860/11582 cut-off events. For 3670/3670 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 112289 event pairs, 2776 based on Foata normal form. 8/10781 useless extension candidates. Maximal degree in co-relation 27175. Up to 3919 conditions per place. [2024-11-19 09:19:59,174 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 96 selfloop transitions, 15 changer transitions 0/140 dead transitions. [2024-11-19 09:19:59,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 140 transitions, 789 flow [2024-11-19 09:19:59,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 09:19:59,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 09:19:59,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 351 transitions. [2024-11-19 09:19:59,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5929054054054054 [2024-11-19 09:19:59,176 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 339 flow. Second operand 8 states and 351 transitions. [2024-11-19 09:19:59,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 140 transitions, 789 flow [2024-11-19 09:19:59,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 140 transitions, 782 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:59,188 INFO L231 Difference]: Finished difference. Result has 90 places, 86 transitions, 414 flow [2024-11-19 09:19:59,189 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=414, PETRI_PLACES=90, PETRI_TRANSITIONS=86} [2024-11-19 09:19:59,189 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 19 predicate places. [2024-11-19 09:19:59,189 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 86 transitions, 414 flow [2024-11-19 09:19:59,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 33.84615384615385) internal successors, (440), 13 states have internal predecessors, (440), 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) [2024-11-19 09:19:59,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:59,190 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:59,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 09:19:59,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 09:19:59,391 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-19 09:19:59,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:59,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1126253083, now seen corresponding path program 1 times [2024-11-19 09:19:59,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:59,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131424112] [2024-11-19 09:19:59,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:59,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:59,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:59,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131424112] [2024-11-19 09:19:59,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131424112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:59,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:59,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:59,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371474019] [2024-11-19 09:19:59,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:59,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:59,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:59,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:59,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:59,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-19 09:19:59,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 86 transitions, 414 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-11-19 09:19:59,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:59,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-19 09:19:59,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:00,601 INFO L124 PetriNetUnfolderBase]: 4679/10113 cut-off events. [2024-11-19 09:20:00,602 INFO L125 PetriNetUnfolderBase]: For 5433/5433 co-relation queries the response was YES. [2024-11-19 09:20:00,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24208 conditions, 10113 events. 4679/10113 cut-off events. For 5433/5433 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 101093 event pairs, 3100 based on Foata normal form. 0/9724 useless extension candidates. Maximal degree in co-relation 24191. Up to 5414 conditions per place. [2024-11-19 09:20:00,658 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 51 selfloop transitions, 5 changer transitions 1/91 dead transitions. [2024-11-19 09:20:00,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 91 transitions, 538 flow [2024-11-19 09:20:00,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:20:00,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:20:00,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 180 transitions. [2024-11-19 09:20:00,659 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6081081081081081 [2024-11-19 09:20:00,659 INFO L175 Difference]: Start difference. First operand has 90 places, 86 transitions, 414 flow. Second operand 4 states and 180 transitions. [2024-11-19 09:20:00,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 91 transitions, 538 flow [2024-11-19 09:20:00,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 522 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-19 09:20:00,673 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 400 flow [2024-11-19 09:20:00,673 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=400, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2024-11-19 09:20:00,674 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 19 predicate places. [2024-11-19 09:20:00,674 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 400 flow [2024-11-19 09:20:00,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-11-19 09:20:00,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:00,675 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:00,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 09:20:00,675 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-19 09:20:00,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:00,675 INFO L85 PathProgramCache]: Analyzing trace with hash -592943848, now seen corresponding path program 1 times [2024-11-19 09:20:00,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:00,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063677111] [2024-11-19 09:20:00,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:00,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:00,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:00,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063677111] [2024-11-19 09:20:00,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063677111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:20:00,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617310843] [2024-11-19 09:20:00,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:00,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:00,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:20:00,857 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) [2024-11-19 09:20:00,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:20:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:00,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:20:00,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:20:00,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 09:20:00,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2024-11-19 09:20:00,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-19 09:20:01,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:01,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:20:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:01,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617310843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:20:01,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:20:01,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-19 09:20:01,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877469472] [2024-11-19 09:20:01,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:20:01,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 09:20:01,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:01,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 09:20:01,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-19 09:20:01,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 74 [2024-11-19 09:20:01,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 400 flow. Second operand has 14 states, 14 states have (on average 32.714285714285715) internal successors, (458), 14 states have internal predecessors, (458), 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) [2024-11-19 09:20:01,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:01,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 74 [2024-11-19 09:20:01,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:02,604 INFO L124 PetriNetUnfolderBase]: 5885/11066 cut-off events. [2024-11-19 09:20:02,604 INFO L125 PetriNetUnfolderBase]: For 5466/5466 co-relation queries the response was YES. [2024-11-19 09:20:02,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27703 conditions, 11066 events. 5885/11066 cut-off events. For 5466/5466 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 101871 event pairs, 1676 based on Foata normal form. 364/11048 useless extension candidates. Maximal degree in co-relation 27685. Up to 3259 conditions per place. [2024-11-19 09:20:02,676 INFO L140 encePairwiseOnDemand]: 61/74 looper letters, 83 selfloop transitions, 27 changer transitions 1/138 dead transitions. [2024-11-19 09:20:02,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 138 transitions, 816 flow [2024-11-19 09:20:02,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:20:02,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:20:02,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 321 transitions. [2024-11-19 09:20:02,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6196911196911197 [2024-11-19 09:20:02,679 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 400 flow. Second operand 7 states and 321 transitions. [2024-11-19 09:20:02,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 138 transitions, 816 flow [2024-11-19 09:20:02,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 138 transitions, 800 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-19 09:20:02,725 INFO L231 Difference]: Finished difference. Result has 91 places, 88 transitions, 464 flow [2024-11-19 09:20:02,725 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=464, PETRI_PLACES=91, PETRI_TRANSITIONS=88} [2024-11-19 09:20:02,726 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 20 predicate places. [2024-11-19 09:20:02,726 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 88 transitions, 464 flow [2024-11-19 09:20:02,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 32.714285714285715) internal successors, (458), 14 states have internal predecessors, (458), 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) [2024-11-19 09:20:02,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:02,726 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:02,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 09:20:02,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:02,931 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-19 09:20:02,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:02,931 INFO L85 PathProgramCache]: Analyzing trace with hash -4010258, now seen corresponding path program 1 times [2024-11-19 09:20:02,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:02,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676924212] [2024-11-19 09:20:02,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:02,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:03,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:03,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:03,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676924212] [2024-11-19 09:20:03,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676924212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:20:03,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923503280] [2024-11-19 09:20:03,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:03,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:20:03,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:20:03,159 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) [2024-11-19 09:20:03,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 09:20:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:03,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 09:20:03,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:20:03,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2024-11-19 09:20:03,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 09:20:03,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2024-11-19 09:20:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:03,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:20:03,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:03,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923503280] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:20:03,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:20:03,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-19 09:20:03,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479580924] [2024-11-19 09:20:03,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:20:03,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 09:20:03,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:03,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 09:20:03,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-11-19 09:20:03,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 74 [2024-11-19 09:20:03,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 88 transitions, 464 flow. Second operand has 17 states, 17 states have (on average 32.588235294117645) internal successors, (554), 17 states have internal predecessors, (554), 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) [2024-11-19 09:20:03,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:03,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 74 [2024-11-19 09:20:03,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:05,063 INFO L124 PetriNetUnfolderBase]: 6951/11959 cut-off events. [2024-11-19 09:20:05,063 INFO L125 PetriNetUnfolderBase]: For 6662/6662 co-relation queries the response was YES. [2024-11-19 09:20:05,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31223 conditions, 11959 events. 6951/11959 cut-off events. For 6662/6662 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 104788 event pairs, 1872 based on Foata normal form. 355/12035 useless extension candidates. Maximal degree in co-relation 31205. Up to 4060 conditions per place. [2024-11-19 09:20:05,141 INFO L140 encePairwiseOnDemand]: 58/74 looper letters, 74 selfloop transitions, 28 changer transitions 13/143 dead transitions. [2024-11-19 09:20:05,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 143 transitions, 884 flow [2024-11-19 09:20:05,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:20:05,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:20:05,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 415 transitions. [2024-11-19 09:20:05,143 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5608108108108109 [2024-11-19 09:20:05,143 INFO L175 Difference]: Start difference. First operand has 91 places, 88 transitions, 464 flow. Second operand 10 states and 415 transitions. [2024-11-19 09:20:05,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 143 transitions, 884 flow [2024-11-19 09:20:05,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 143 transitions, 838 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-19 09:20:05,167 INFO L231 Difference]: Finished difference. Result has 96 places, 86 transitions, 483 flow [2024-11-19 09:20:05,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=483, PETRI_PLACES=96, PETRI_TRANSITIONS=86} [2024-11-19 09:20:05,167 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 25 predicate places. [2024-11-19 09:20:05,168 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 86 transitions, 483 flow [2024-11-19 09:20:05,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 32.588235294117645) internal successors, (554), 17 states have internal predecessors, (554), 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) [2024-11-19 09:20:05,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:05,168 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:05,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 09:20:05,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 09:20:05,369 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 13 more)] === [2024-11-19 09:20:05,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:05,369 INFO L85 PathProgramCache]: Analyzing trace with hash 553802707, now seen corresponding path program 1 times [2024-11-19 09:20:05,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:05,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481269660] [2024-11-19 09:20:05,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:05,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:20:05,388 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:20:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:20:05,410 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:20:05,411 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:20:05,411 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-11-19 09:20:05,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (14 of 16 remaining) [2024-11-19 09:20:05,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX (13 of 16 remaining) [2024-11-19 09:20:05,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (12 of 16 remaining) [2024-11-19 09:20:05,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2024-11-19 09:20:05,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2024-11-19 09:20:05,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 16 remaining) [2024-11-19 09:20:05,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 16 remaining) [2024-11-19 09:20:05,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 16 remaining) [2024-11-19 09:20:05,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 16 remaining) [2024-11-19 09:20:05,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 16 remaining) [2024-11-19 09:20:05,413 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 16 remaining) [2024-11-19 09:20:05,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (3 of 16 remaining) [2024-11-19 09:20:05,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 16 remaining) [2024-11-19 09:20:05,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 16 remaining) [2024-11-19 09:20:05,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 16 remaining) [2024-11-19 09:20:05,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 09:20:05,414 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:05,415 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:20:05,415 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 09:20:05,438 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2024-11-19 09:20:05,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 92 transitions, 256 flow [2024-11-19 09:20:05,518 INFO L124 PetriNetUnfolderBase]: 350/1531 cut-off events. [2024-11-19 09:20:05,518 INFO L125 PetriNetUnfolderBase]: For 419/431 co-relation queries the response was YES. [2024-11-19 09:20:05,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1967 conditions, 1531 events. 350/1531 cut-off events. For 419/431 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11428 event pairs, 32 based on Foata normal form. 0/995 useless extension candidates. Maximal degree in co-relation 984. Up to 192 conditions per place. [2024-11-19 09:20:05,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 92 transitions, 256 flow [2024-11-19 09:20:05,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 92 transitions, 256 flow [2024-11-19 09:20:05,532 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:20:05,532 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;@69de3f17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:20:05,532 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-19 09:20:05,533 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:20:05,534 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-11-19 09:20:05,534 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:20:05,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:05,534 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-19 09:20:05,534 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 14 more)] === [2024-11-19 09:20:05,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:05,534 INFO L85 PathProgramCache]: Analyzing trace with hash 17370536, now seen corresponding path program 1 times [2024-11-19 09:20:05,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:05,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69019991] [2024-11-19 09:20:05,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:05,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:05,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:05,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69019991] [2024-11-19 09:20:05,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69019991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:05,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:05,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:20:05,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834899633] [2024-11-19 09:20:05,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:05,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:20:05,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:05,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:20:05,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:20:05,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 92 [2024-11-19 09:20:05,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 92 transitions, 256 flow. Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 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) [2024-11-19 09:20:05,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:05,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 92 [2024-11-19 09:20:05,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:10,772 INFO L124 PetriNetUnfolderBase]: 34066/64642 cut-off events. [2024-11-19 09:20:10,772 INFO L125 PetriNetUnfolderBase]: For 20374/20374 co-relation queries the response was YES. [2024-11-19 09:20:10,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117260 conditions, 64642 events. 34066/64642 cut-off events. For 20374/20374 co-relation queries the response was YES. Maximal size of possible extension queue 2941. Compared 710360 event pairs, 29642 based on Foata normal form. 8875/62909 useless extension candidates. Maximal degree in co-relation 36918. Up to 45834 conditions per place. [2024-11-19 09:20:11,157 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 42 selfloop transitions, 0 changer transitions 0/86 dead transitions. [2024-11-19 09:20:11,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 86 transitions, 328 flow [2024-11-19 09:20:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:20:11,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:20:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 136 transitions. [2024-11-19 09:20:11,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7391304347826086 [2024-11-19 09:20:11,159 INFO L175 Difference]: Start difference. First operand has 88 places, 92 transitions, 256 flow. Second operand 2 states and 136 transitions. [2024-11-19 09:20:11,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 86 transitions, 328 flow [2024-11-19 09:20:11,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 86 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:20:11,164 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 244 flow [2024-11-19 09:20:11,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=244, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2024-11-19 09:20:11,165 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, -1 predicate places. [2024-11-19 09:20:11,165 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 244 flow [2024-11-19 09:20:11,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 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) [2024-11-19 09:20:11,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:11,165 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:20:11,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 09:20:11,165 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 14 more)] === [2024-11-19 09:20:11,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:11,166 INFO L85 PathProgramCache]: Analyzing trace with hash 538549544, now seen corresponding path program 1 times [2024-11-19 09:20:11,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:11,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411587235] [2024-11-19 09:20:11,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:11,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:11,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:11,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411587235] [2024-11-19 09:20:11,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411587235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:11,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:11,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:20:11,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462047501] [2024-11-19 09:20:11,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:11,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:20:11,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:11,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:20:11,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:20:11,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 92 [2024-11-19 09:20:11,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2024-11-19 09:20:11,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:11,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 92 [2024-11-19 09:20:11,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:16,521 INFO L124 PetriNetUnfolderBase]: 38403/66237 cut-off events. [2024-11-19 09:20:16,522 INFO L125 PetriNetUnfolderBase]: For 14309/14309 co-relation queries the response was YES. [2024-11-19 09:20:16,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124936 conditions, 66237 events. 38403/66237 cut-off events. For 14309/14309 co-relation queries the response was YES. Maximal size of possible extension queue 3058. Compared 660337 event pairs, 26932 based on Foata normal form. 0/59108 useless extension candidates. Maximal degree in co-relation 124927. Up to 39814 conditions per place. [2024-11-19 09:20:16,913 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 51 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2024-11-19 09:20:16,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 93 transitions, 364 flow [2024-11-19 09:20:16,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:20:16,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:20:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-11-19 09:20:16,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6340579710144928 [2024-11-19 09:20:16,915 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 244 flow. Second operand 3 states and 175 transitions. [2024-11-19 09:20:16,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 93 transitions, 364 flow [2024-11-19 09:20:16,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 93 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:20:16,923 INFO L231 Difference]: Finished difference. Result has 87 places, 84 transitions, 244 flow [2024-11-19 09:20:16,924 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=87, PETRI_TRANSITIONS=84} [2024-11-19 09:20:16,924 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, -1 predicate places. [2024-11-19 09:20:16,924 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 84 transitions, 244 flow [2024-11-19 09:20:16,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2024-11-19 09:20:16,924 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:16,924 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:20:16,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 09:20:16,925 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 14 more)] === [2024-11-19 09:20:16,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:16,925 INFO L85 PathProgramCache]: Analyzing trace with hash 538549545, now seen corresponding path program 1 times [2024-11-19 09:20:16,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:16,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501043811] [2024-11-19 09:20:16,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:16,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:17,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:17,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501043811] [2024-11-19 09:20:17,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501043811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:17,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:17,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:20:17,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028800607] [2024-11-19 09:20:17,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:17,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:20:17,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:17,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:20:17,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:20:17,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 92 [2024-11-19 09:20:17,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 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) [2024-11-19 09:20:17,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:17,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 92 [2024-11-19 09:20:17,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:27,895 INFO L124 PetriNetUnfolderBase]: 76586/133916 cut-off events. [2024-11-19 09:20:27,896 INFO L125 PetriNetUnfolderBase]: For 40604/40604 co-relation queries the response was YES. [2024-11-19 09:20:28,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254376 conditions, 133916 events. 76586/133916 cut-off events. For 40604/40604 co-relation queries the response was YES. Maximal size of possible extension queue 6129. Compared 1480225 event pairs, 63128 based on Foata normal form. 1/119529 useless extension candidates. Maximal degree in co-relation 254366. Up to 51913 conditions per place. [2024-11-19 09:20:28,992 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 84 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2024-11-19 09:20:28,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 128 transitions, 578 flow [2024-11-19 09:20:28,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:20:28,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:20:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2024-11-19 09:20:28,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7010869565217391 [2024-11-19 09:20:28,994 INFO L175 Difference]: Start difference. First operand has 87 places, 84 transitions, 244 flow. Second operand 4 states and 258 transitions. [2024-11-19 09:20:28,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 128 transitions, 578 flow [2024-11-19 09:20:30,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 128 transitions, 570 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:20:30,261 INFO L231 Difference]: Finished difference. Result has 90 places, 86 transitions, 266 flow [2024-11-19 09:20:30,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=90, PETRI_TRANSITIONS=86} [2024-11-19 09:20:30,262 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 2 predicate places. [2024-11-19 09:20:30,262 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 86 transitions, 266 flow [2024-11-19 09:20:30,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 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) [2024-11-19 09:20:30,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:30,262 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:30,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 09:20:30,263 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (and 14 more)] === [2024-11-19 09:20:30,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:30,263 INFO L85 PathProgramCache]: Analyzing trace with hash 368329384, now seen corresponding path program 1 times [2024-11-19 09:20:30,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:30,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188434443] [2024-11-19 09:20:30,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:30,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:30,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:30,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188434443] [2024-11-19 09:20:30,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188434443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:30,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:30,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:20:30,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813550460] [2024-11-19 09:20:30,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:30,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:20:30,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:30,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:20:30,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:20:30,371 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 92 [2024-11-19 09:20:30,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 86 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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) [2024-11-19 09:20:30,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:30,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 92 [2024-11-19 09:20:30,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand