./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-complex/safestack_relacy.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f 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-complex/safestack_relacy.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 516fee84c55ddb7fa4275a43ad5a2da6ea994abf63bbbbd8ed5c82108d65f7b0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:04:15,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:04:15,964 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:04:15,969 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:04:15,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:04:15,998 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:04:15,999 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:04:15,999 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:04:16,000 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:04:16,002 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:04:16,003 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:04:16,003 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:04:16,003 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:04:16,005 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:04:16,006 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:04:16,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:04:16,006 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:04:16,007 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:04:16,007 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:04:16,007 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:04:16,011 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:04:16,011 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:04:16,012 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:04:16,012 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:04:16,012 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:04:16,012 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:04:16,013 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:04:16,013 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:04:16,013 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:04:16,013 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:04:16,014 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:04:16,014 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:04:16,014 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:04:16,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:04:16,015 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:04:16,015 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:04:16,015 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:04:16,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:04:16,015 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:04:16,015 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:04:16,016 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:04:16,016 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:04:16,017 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516fee84c55ddb7fa4275a43ad5a2da6ea994abf63bbbbd8ed5c82108d65f7b0 [2024-11-10 18:04:16,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:04:16,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:04:16,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:04:16,316 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:04:16,316 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:04:16,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-complex/safestack_relacy.i [2024-11-10 18:04:17,744 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:04:18,097 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:04:18,098 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2024-11-10 18:04:18,128 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f67520bb6/2a5b291a904a4828ba6f3d2a9fc234d4/FLAG7193b8439 [2024-11-10 18:04:18,326 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f67520bb6/2a5b291a904a4828ba6f3d2a9fc234d4 [2024-11-10 18:04:18,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:04:18,330 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:04:18,333 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:04:18,333 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:04:18,339 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:04:18,340 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:04:18" (1/1) ... [2024-11-10 18:04:18,341 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ac54c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:04:18, skipping insertion in model container [2024-11-10 18:04:18,341 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:04:18" (1/1) ... [2024-11-10 18:04:18,412 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:04:19,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:04:19,064 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:04:19,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:04:19,225 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:04:19,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:04:19 WrapperNode [2024-11-10 18:04:19,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:04:19,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:04:19,228 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:04:19,228 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:04:19,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:04:19" (1/1) ... [2024-11-10 18:04:19,270 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:04:19" (1/1) ... [2024-11-10 18:04:19,305 INFO L138 Inliner]: procedures = 458, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 170 [2024-11-10 18:04:19,309 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:04:19,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:04:19,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:04:19,310 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:04:19,320 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:04:19" (1/1) ... [2024-11-10 18:04:19,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:04:19" (1/1) ... [2024-11-10 18:04:19,326 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:04:19" (1/1) ... [2024-11-10 18:04:19,349 INFO L175 MemorySlicer]: Split 37 memory accesses to 3 slices as follows [2, 5, 30]. 81 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 3, 8]. The 13 writes are split as follows [0, 1, 12]. [2024-11-10 18:04:19,350 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:04:19" (1/1) ... [2024-11-10 18:04:19,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:04:19" (1/1) ... [2024-11-10 18:04:19,368 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:04:19" (1/1) ... [2024-11-10 18:04:19,369 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:04:19" (1/1) ... [2024-11-10 18:04:19,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:04:19" (1/1) ... [2024-11-10 18:04:19,374 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:04:19" (1/1) ... [2024-11-10 18:04:19,380 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:04:19,382 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:04:19,382 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:04:19,382 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:04:19,383 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:04:19" (1/1) ... [2024-11-10 18:04:19,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:04:19,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:04:19,429 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) [2024-11-10 18:04:19,433 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 [2024-11-10 18:04:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 18:04:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 18:04:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 18:04:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:04:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2024-11-10 18:04:19,486 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2024-11-10 18:04:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:04:19,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:04:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 18:04:19,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 18:04:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 18:04:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:04:19,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 18:04:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 18:04:19,492 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:04:19,801 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:04:19,803 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:04:20,204 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:04:20,205 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:04:20,398 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:04:20,399 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:04:20,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:04:20 BoogieIcfgContainer [2024-11-10 18:04:20,400 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:04:20,402 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:04:20,402 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:04:20,407 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:04:20,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:04:18" (1/3) ... [2024-11-10 18:04:20,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a1d931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:04:20, skipping insertion in model container [2024-11-10 18:04:20,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:04:19" (2/3) ... [2024-11-10 18:04:20,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a1d931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:04:20, skipping insertion in model container [2024-11-10 18:04:20,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:04:20" (3/3) ... [2024-11-10 18:04:20,409 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2024-11-10 18:04:20,428 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:04:20,429 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-11-10 18:04:20,429 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:04:20,555 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-10 18:04:20,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 130 transitions, 267 flow [2024-11-10 18:04:20,639 INFO L124 PetriNetUnfolderBase]: 19/148 cut-off events. [2024-11-10 18:04:20,640 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 18:04:20,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 148 events. 19/148 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 509 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 106. Up to 4 conditions per place. [2024-11-10 18:04:20,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 130 transitions, 267 flow [2024-11-10 18:04:20,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 130 transitions, 267 flow [2024-11-10 18:04:20,662 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:04:20,668 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;@35754b1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:04:20,669 INFO L334 AbstractCegarLoop]: Starting to check reachability of 88 error locations. [2024-11-10 18:04:20,671 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:04:20,671 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-10 18:04:20,672 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:04:20,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:20,673 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-10 18:04:20,674 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-10 18:04:20,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:20,680 INFO L85 PathProgramCache]: Analyzing trace with hash 18672, now seen corresponding path program 1 times [2024-11-10 18:04:20,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:20,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027120765] [2024-11-10 18:04:20,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:20,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:21,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:21,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:21,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027120765] [2024-11-10 18:04:21,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027120765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:04:21,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:04:21,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:04:21,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036056672] [2024-11-10 18:04:21,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:04:21,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:04:21,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:21,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:04:21,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:04:21,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 130 [2024-11-10 18:04:21,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 130 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-11-10 18:04:21,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:21,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 130 [2024-11-10 18:04:21,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:21,450 INFO L124 PetriNetUnfolderBase]: 180/478 cut-off events. [2024-11-10 18:04:21,451 INFO L125 PetriNetUnfolderBase]: For 8/12 co-relation queries the response was YES. [2024-11-10 18:04:21,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 858 conditions, 478 events. 180/478 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2504 event pairs, 148 based on Foata normal form. 113/486 useless extension candidates. Maximal degree in co-relation 800. Up to 374 conditions per place. [2024-11-10 18:04:21,459 INFO L140 encePairwiseOnDemand]: 92/130 looper letters, 58 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2024-11-10 18:04:21,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 92 transitions, 309 flow [2024-11-10 18:04:21,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:04:21,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:04:21,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2024-11-10 18:04:21,472 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5076923076923077 [2024-11-10 18:04:21,474 INFO L175 Difference]: Start difference. First operand has 116 places, 130 transitions, 267 flow. Second operand 3 states and 198 transitions. [2024-11-10 18:04:21,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 92 transitions, 309 flow [2024-11-10 18:04:21,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 92 transitions, 309 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:04:21,480 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 193 flow [2024-11-10 18:04:21,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2024-11-10 18:04:21,487 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -27 predicate places. [2024-11-10 18:04:21,487 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 193 flow [2024-11-10 18:04:21,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-11-10 18:04:21,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:21,488 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-10 18:04:21,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:04:21,489 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-10 18:04:21,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:21,489 INFO L85 PathProgramCache]: Analyzing trace with hash 18673, now seen corresponding path program 1 times [2024-11-10 18:04:21,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:21,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891240024] [2024-11-10 18:04:21,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:21,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:21,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:21,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:21,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891240024] [2024-11-10 18:04:21,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891240024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:04:21,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:04:21,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:04:21,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123838436] [2024-11-10 18:04:21,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:04:21,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:04:21,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:21,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:04:21,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:04:21,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 130 [2024-11-10 18:04:21,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-11-10 18:04:21,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:21,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 130 [2024-11-10 18:04:21,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:21,813 INFO L124 PetriNetUnfolderBase]: 152/413 cut-off events. [2024-11-10 18:04:21,813 INFO L125 PetriNetUnfolderBase]: For 8/12 co-relation queries the response was YES. [2024-11-10 18:04:21,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 413 events. 152/413 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2064 event pairs, 120 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 723. Up to 309 conditions per place. [2024-11-10 18:04:21,817 INFO L140 encePairwiseOnDemand]: 120/130 looper letters, 49 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2024-11-10 18:04:21,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 83 transitions, 275 flow [2024-11-10 18:04:21,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:04:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:04:21,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 167 transitions. [2024-11-10 18:04:21,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4282051282051282 [2024-11-10 18:04:21,819 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 193 flow. Second operand 3 states and 167 transitions. [2024-11-10 18:04:21,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 83 transitions, 275 flow [2024-11-10 18:04:21,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:04:21,822 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 176 flow [2024-11-10 18:04:21,823 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2024-11-10 18:04:21,823 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -35 predicate places. [2024-11-10 18:04:21,823 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 176 flow [2024-11-10 18:04:21,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-11-10 18:04:21,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:21,824 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:21,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:04:21,825 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-10 18:04:21,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:21,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1820316174, now seen corresponding path program 1 times [2024-11-10 18:04:21,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:21,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096646630] [2024-11-10 18:04:21,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:21,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:21,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:21,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:21,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096646630] [2024-11-10 18:04:21,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096646630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:04:21,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:04:21,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:04:21,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425414809] [2024-11-10 18:04:21,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:04:21,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:04:21,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:21,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:04:21,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:04:21,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 130 [2024-11-10 18:04:21,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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) [2024-11-10 18:04:21,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:21,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 130 [2024-11-10 18:04:21,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:22,136 INFO L124 PetriNetUnfolderBase]: 152/418 cut-off events. [2024-11-10 18:04:22,136 INFO L125 PetriNetUnfolderBase]: For 8/12 co-relation queries the response was YES. [2024-11-10 18:04:22,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 418 events. 152/418 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2059 event pairs, 120 based on Foata normal form. 1/351 useless extension candidates. Maximal degree in co-relation 733. Up to 302 conditions per place. [2024-11-10 18:04:22,143 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 51 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2024-11-10 18:04:22,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 86 transitions, 292 flow [2024-11-10 18:04:22,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:04:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:04:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-11-10 18:04:22,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36923076923076925 [2024-11-10 18:04:22,147 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 176 flow. Second operand 4 states and 192 transitions. [2024-11-10 18:04:22,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 86 transitions, 292 flow [2024-11-10 18:04:22,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 86 transitions, 291 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:04:22,150 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 191 flow [2024-11-10 18:04:22,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2024-11-10 18:04:22,153 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -32 predicate places. [2024-11-10 18:04:22,153 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 191 flow [2024-11-10 18:04:22,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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) [2024-11-10 18:04:22,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:22,154 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:22,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 18:04:22,154 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-10 18:04:22,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:22,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1820316204, now seen corresponding path program 1 times [2024-11-10 18:04:22,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:22,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860041144] [2024-11-10 18:04:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:22,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:22,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:22,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:22,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860041144] [2024-11-10 18:04:22,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860041144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:04:22,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:04:22,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:04:22,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018229199] [2024-11-10 18:04:22,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:04:22,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:04:22,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:22,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:04:22,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:04:22,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 130 [2024-11-10 18:04:22,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2024-11-10 18:04:22,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:22,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 130 [2024-11-10 18:04:22,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:22,481 INFO L124 PetriNetUnfolderBase]: 152/417 cut-off events. [2024-11-10 18:04:22,481 INFO L125 PetriNetUnfolderBase]: For 9/13 co-relation queries the response was YES. [2024-11-10 18:04:22,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 417 events. 152/417 cut-off events. For 9/13 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2062 event pairs, 120 based on Foata normal form. 0/350 useless extension candidates. Maximal degree in co-relation 736. Up to 310 conditions per place. [2024-11-10 18:04:22,485 INFO L140 encePairwiseOnDemand]: 126/130 looper letters, 50 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2024-11-10 18:04:22,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 85 transitions, 299 flow [2024-11-10 18:04:22,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:04:22,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:04:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2024-11-10 18:04:22,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3730769230769231 [2024-11-10 18:04:22,490 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 191 flow. Second operand 4 states and 194 transitions. [2024-11-10 18:04:22,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 85 transitions, 299 flow [2024-11-10 18:04:22,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 85 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:04:22,493 INFO L231 Difference]: Finished difference. Result has 86 places, 84 transitions, 195 flow [2024-11-10 18:04:22,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=86, PETRI_TRANSITIONS=84} [2024-11-10 18:04:22,494 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -30 predicate places. [2024-11-10 18:04:22,495 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 84 transitions, 195 flow [2024-11-10 18:04:22,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2024-11-10 18:04:22,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:22,496 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:22,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:04:22,496 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-10 18:04:22,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:22,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1513784044, now seen corresponding path program 1 times [2024-11-10 18:04:22,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:22,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968329428] [2024-11-10 18:04:22,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:22,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:22,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:22,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:22,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968329428] [2024-11-10 18:04:22,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968329428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:04:22,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501912770] [2024-11-10 18:04:22,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:22,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:04:22,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:04:22,855 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) [2024-11-10 18:04:22,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:04:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:22,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 18:04:22,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:04:23,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:23,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:04:23,242 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 7 treesize of output 5 [2024-11-10 18:04:23,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:23,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501912770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:04:23,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:04:23,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-10 18:04:23,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137320287] [2024-11-10 18:04:23,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:04:23,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 18:04:23,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:23,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 18:04:23,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-11-10 18:04:23,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 130 [2024-11-10 18:04:23,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 195 flow. Second operand has 14 states, 14 states have (on average 34.92857142857143) internal successors, (489), 14 states have internal predecessors, (489), 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) [2024-11-10 18:04:23,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:23,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 130 [2024-11-10 18:04:23,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:23,844 INFO L124 PetriNetUnfolderBase]: 153/422 cut-off events. [2024-11-10 18:04:23,845 INFO L125 PetriNetUnfolderBase]: For 14/18 co-relation queries the response was YES. [2024-11-10 18:04:23,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 422 events. 153/422 cut-off events. For 14/18 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2079 event pairs, 120 based on Foata normal form. 1/356 useless extension candidates. Maximal degree in co-relation 750. Up to 302 conditions per place. [2024-11-10 18:04:23,848 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 53 selfloop transitions, 7 changer transitions 0/90 dead transitions. [2024-11-10 18:04:23,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 327 flow [2024-11-10 18:04:23,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 18:04:23,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 18:04:23,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 292 transitions. [2024-11-10 18:04:23,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3208791208791209 [2024-11-10 18:04:23,875 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 195 flow. Second operand 7 states and 292 transitions. [2024-11-10 18:04:23,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 327 flow [2024-11-10 18:04:23,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 90 transitions, 319 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:04:23,878 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 206 flow [2024-11-10 18:04:23,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2024-11-10 18:04:23,879 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -28 predicate places. [2024-11-10 18:04:23,879 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 206 flow [2024-11-10 18:04:23,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 34.92857142857143) internal successors, (489), 14 states have internal predecessors, (489), 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) [2024-11-10 18:04:23,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:23,883 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:23,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 18:04:24,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:04:24,084 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-10 18:04:24,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:24,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1513784074, now seen corresponding path program 1 times [2024-11-10 18:04:24,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:24,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057691216] [2024-11-10 18:04:24,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:24,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:24,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:24,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:24,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057691216] [2024-11-10 18:04:24,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057691216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:04:24,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049315213] [2024-11-10 18:04:24,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:24,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:04:24,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:04:24,210 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) [2024-11-10 18:04:24,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 18:04:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:24,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 18:04:24,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:04:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:24,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:04:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:24,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049315213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:04:24,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:04:24,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-10 18:04:24,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882142024] [2024-11-10 18:04:24,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:04:24,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 18:04:24,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:24,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 18:04:24,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-10 18:04:24,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 130 [2024-11-10 18:04:24,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 206 flow. Second operand has 8 states, 8 states have (on average 35.25) internal successors, (282), 8 states have internal predecessors, (282), 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) [2024-11-10 18:04:24,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:24,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 130 [2024-11-10 18:04:24,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:24,603 INFO L124 PetriNetUnfolderBase]: 152/420 cut-off events. [2024-11-10 18:04:24,604 INFO L125 PetriNetUnfolderBase]: For 21/25 co-relation queries the response was YES. [2024-11-10 18:04:24,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 420 events. 152/420 cut-off events. For 21/25 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2060 event pairs, 120 based on Foata normal form. 1/355 useless extension candidates. Maximal degree in co-relation 753. Up to 302 conditions per place. [2024-11-10 18:04:24,607 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 51 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2024-11-10 18:04:24,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 88 transitions, 333 flow [2024-11-10 18:04:24,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:04:24,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:04:24,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 257 transitions. [2024-11-10 18:04:24,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3294871794871795 [2024-11-10 18:04:24,609 INFO L175 Difference]: Start difference. First operand has 88 places, 85 transitions, 206 flow. Second operand 6 states and 257 transitions. [2024-11-10 18:04:24,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 88 transitions, 333 flow [2024-11-10 18:04:24,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 88 transitions, 324 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-10 18:04:24,611 INFO L231 Difference]: Finished difference. Result has 91 places, 85 transitions, 218 flow [2024-11-10 18:04:24,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=91, PETRI_TRANSITIONS=85} [2024-11-10 18:04:24,612 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -25 predicate places. [2024-11-10 18:04:24,613 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 85 transitions, 218 flow [2024-11-10 18:04:24,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.25) internal successors, (282), 8 states have internal predecessors, (282), 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) [2024-11-10 18:04:24,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:24,613 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:24,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 18:04:24,817 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,SelfDestructingSolverStorable5 [2024-11-10 18:04:24,818 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-10 18:04:24,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:24,819 INFO L85 PathProgramCache]: Analyzing trace with hash -485192670, now seen corresponding path program 2 times [2024-11-10 18:04:24,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:24,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626655197] [2024-11-10 18:04:24,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:24,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 18:04:25,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:25,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626655197] [2024-11-10 18:04:25,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626655197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:04:25,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:04:25,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:04:25,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772876204] [2024-11-10 18:04:25,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:04:25,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:04:25,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:25,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:04:25,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:04:25,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 130 [2024-11-10 18:04:25,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 85 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-11-10 18:04:25,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:25,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 130 [2024-11-10 18:04:25,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:25,155 INFO L124 PetriNetUnfolderBase]: 152/419 cut-off events. [2024-11-10 18:04:25,155 INFO L125 PetriNetUnfolderBase]: For 21/25 co-relation queries the response was YES. [2024-11-10 18:04:25,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 419 events. 152/419 cut-off events. For 21/25 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2056 event pairs, 120 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 751. Up to 302 conditions per place. [2024-11-10 18:04:25,158 INFO L140 encePairwiseOnDemand]: 127/130 looper letters, 48 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2024-11-10 18:04:25,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 84 transitions, 316 flow [2024-11-10 18:04:25,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:04:25,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:04:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-11-10 18:04:25,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4025641025641026 [2024-11-10 18:04:25,159 INFO L175 Difference]: Start difference. First operand has 91 places, 85 transitions, 218 flow. Second operand 3 states and 157 transitions. [2024-11-10 18:04:25,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 84 transitions, 316 flow [2024-11-10 18:04:25,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 84 transitions, 302 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:04:25,162 INFO L231 Difference]: Finished difference. Result has 88 places, 84 transitions, 206 flow [2024-11-10 18:04:25,162 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=86, 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=206, PETRI_PLACES=88, PETRI_TRANSITIONS=84} [2024-11-10 18:04:25,163 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -28 predicate places. [2024-11-10 18:04:25,163 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 84 transitions, 206 flow [2024-11-10 18:04:25,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-11-10 18:04:25,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:25,163 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:25,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 18:04:25,164 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-10 18:04:25,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:25,164 INFO L85 PathProgramCache]: Analyzing trace with hash -254825751, now seen corresponding path program 1 times [2024-11-10 18:04:25,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:25,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844062386] [2024-11-10 18:04:25,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:25,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:25,288 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 18:04:25,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:25,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844062386] [2024-11-10 18:04:25,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844062386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:04:25,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:04:25,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:04:25,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219312373] [2024-11-10 18:04:25,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:04:25,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:04:25,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:25,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:04:25,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:04:25,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 130 [2024-11-10 18:04:25,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 84 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-10 18:04:25,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:25,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 130 [2024-11-10 18:04:25,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:25,408 INFO L124 PetriNetUnfolderBase]: 152/415 cut-off events. [2024-11-10 18:04:25,409 INFO L125 PetriNetUnfolderBase]: For 13/17 co-relation queries the response was YES. [2024-11-10 18:04:25,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 415 events. 152/415 cut-off events. For 13/17 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2017 event pairs, 120 based on Foata normal form. 60/414 useless extension candidates. Maximal degree in co-relation 742. Up to 311 conditions per place. [2024-11-10 18:04:25,412 INFO L140 encePairwiseOnDemand]: 127/130 looper letters, 49 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2024-11-10 18:04:25,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 82 transitions, 302 flow [2024-11-10 18:04:25,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:04:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:04:25,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-11-10 18:04:25,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38974358974358975 [2024-11-10 18:04:25,413 INFO L175 Difference]: Start difference. First operand has 88 places, 84 transitions, 206 flow. Second operand 3 states and 152 transitions. [2024-11-10 18:04:25,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 82 transitions, 302 flow [2024-11-10 18:04:25,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 82 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:04:25,415 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 200 flow [2024-11-10 18:04:25,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2024-11-10 18:04:25,416 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -30 predicate places. [2024-11-10 18:04:25,416 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 200 flow [2024-11-10 18:04:25,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-10 18:04:25,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:25,417 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:25,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 18:04:25,417 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-10 18:04:25,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:25,417 INFO L85 PathProgramCache]: Analyzing trace with hash -254825750, now seen corresponding path program 1 times [2024-11-10 18:04:25,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:25,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366530308] [2024-11-10 18:04:25,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:25,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 18:04:25,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:25,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366530308] [2024-11-10 18:04:25,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366530308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:04:25,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:04:25,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:04:25,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336282137] [2024-11-10 18:04:25,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:04:25,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:04:25,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:25,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:04:25,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:04:25,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 130 [2024-11-10 18:04:25,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2024-11-10 18:04:25,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:25,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 130 [2024-11-10 18:04:25,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:25,764 INFO L124 PetriNetUnfolderBase]: 187/534 cut-off events. [2024-11-10 18:04:25,764 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 18:04:25,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 534 events. 187/534 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2844 event pairs, 36 based on Foata normal form. 61/512 useless extension candidates. Maximal degree in co-relation 939. Up to 285 conditions per place. [2024-11-10 18:04:25,767 INFO L140 encePairwiseOnDemand]: 121/130 looper letters, 84 selfloop transitions, 5 changer transitions 1/117 dead transitions. [2024-11-10 18:04:25,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 117 transitions, 450 flow [2024-11-10 18:04:25,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:04:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:04:25,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-10 18:04:25,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2024-11-10 18:04:25,769 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 200 flow. Second operand 4 states and 216 transitions. [2024-11-10 18:04:25,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 117 transitions, 450 flow [2024-11-10 18:04:25,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 117 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:04:25,773 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 219 flow [2024-11-10 18:04:25,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=89, PETRI_TRANSITIONS=81} [2024-11-10 18:04:25,774 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -27 predicate places. [2024-11-10 18:04:25,774 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 219 flow [2024-11-10 18:04:25,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2024-11-10 18:04:25,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:25,775 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:25,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 18:04:25,775 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-10 18:04:25,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:25,775 INFO L85 PathProgramCache]: Analyzing trace with hash 22111693, now seen corresponding path program 1 times [2024-11-10 18:04:25,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:25,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107182739] [2024-11-10 18:04:25,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:25,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 18:04:25,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:25,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107182739] [2024-11-10 18:04:25,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107182739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:04:25,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78094528] [2024-11-10 18:04:25,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:25,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:04:25,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:04:25,970 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) [2024-11-10 18:04:25,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 18:04:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:26,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 18:04:26,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:04:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 18:04:26,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:04:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 18:04:26,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78094528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:04:26,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:04:26,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-10 18:04:26,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571061383] [2024-11-10 18:04:26,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:04:26,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 18:04:26,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:26,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 18:04:26,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-10 18:04:26,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 130 [2024-11-10 18:04:26,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 219 flow. Second operand has 11 states, 11 states have (on average 32.54545454545455) internal successors, (358), 11 states have internal predecessors, (358), 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) [2024-11-10 18:04:26,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:26,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 130 [2024-11-10 18:04:26,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:26,805 INFO L124 PetriNetUnfolderBase]: 115/311 cut-off events. [2024-11-10 18:04:26,805 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-11-10 18:04:26,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 311 events. 115/311 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1151 event pairs, 58 based on Foata normal form. 62/333 useless extension candidates. Maximal degree in co-relation 631. Up to 195 conditions per place. [2024-11-10 18:04:26,807 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 80 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2024-11-10 18:04:26,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 105 transitions, 416 flow [2024-11-10 18:04:26,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:04:26,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:04:26,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2024-11-10 18:04:26,809 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3507692307692308 [2024-11-10 18:04:26,809 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 219 flow. Second operand 5 states and 228 transitions. [2024-11-10 18:04:26,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 105 transitions, 416 flow [2024-11-10 18:04:26,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 105 transitions, 408 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:04:26,814 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 176 flow [2024-11-10 18:04:26,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-11-10 18:04:26,816 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -39 predicate places. [2024-11-10 18:04:26,816 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 176 flow [2024-11-10 18:04:26,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.54545454545455) internal successors, (358), 11 states have internal predecessors, (358), 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) [2024-11-10 18:04:26,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:26,817 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:26,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 18:04:27,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:04:27,018 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-10 18:04:27,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:27,019 INFO L85 PathProgramCache]: Analyzing trace with hash 685463075, now seen corresponding path program 1 times [2024-11-10 18:04:27,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:27,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332123658] [2024-11-10 18:04:27,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:27,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:04:27,059 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:04:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:04:27,110 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:04:27,111 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:04:27,112 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (87 of 88 remaining) [2024-11-10 18:04:27,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 88 remaining) [2024-11-10 18:04:27,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 88 remaining) [2024-11-10 18:04:27,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 88 remaining) [2024-11-10 18:04:27,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 88 remaining) [2024-11-10 18:04:27,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 88 remaining) [2024-11-10 18:04:27,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 88 remaining) [2024-11-10 18:04:27,114 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 88 remaining) [2024-11-10 18:04:27,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 88 remaining) [2024-11-10 18:04:27,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 88 remaining) [2024-11-10 18:04:27,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 88 remaining) [2024-11-10 18:04:27,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 88 remaining) [2024-11-10 18:04:27,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 88 remaining) [2024-11-10 18:04:27,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (74 of 88 remaining) [2024-11-10 18:04:27,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 88 remaining) [2024-11-10 18:04:27,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 88 remaining) [2024-11-10 18:04:27,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 88 remaining) [2024-11-10 18:04:27,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 88 remaining) [2024-11-10 18:04:27,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 88 remaining) [2024-11-10 18:04:27,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 88 remaining) [2024-11-10 18:04:27,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 88 remaining) [2024-11-10 18:04:27,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 88 remaining) [2024-11-10 18:04:27,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12ASSERT_VIOLATIONMEMORY_LEAK (65 of 88 remaining) [2024-11-10 18:04:27,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 88 remaining) [2024-11-10 18:04:27,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 88 remaining) [2024-11-10 18:04:27,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 88 remaining) [2024-11-10 18:04:27,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 88 remaining) [2024-11-10 18:04:27,117 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 88 remaining) [2024-11-10 18:04:27,117 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 88 remaining) [2024-11-10 18:04:27,117 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 88 remaining) [2024-11-10 18:04:27,117 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 88 remaining) [2024-11-10 18:04:27,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 88 remaining) [2024-11-10 18:04:27,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 88 remaining) [2024-11-10 18:04:27,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 88 remaining) [2024-11-10 18:04:27,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 88 remaining) [2024-11-10 18:04:27,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 88 remaining) [2024-11-10 18:04:27,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 88 remaining) [2024-11-10 18:04:27,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 88 remaining) [2024-11-10 18:04:27,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 88 remaining) [2024-11-10 18:04:27,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 88 remaining) [2024-11-10 18:04:27,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 88 remaining) [2024-11-10 18:04:27,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 88 remaining) [2024-11-10 18:04:27,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 88 remaining) [2024-11-10 18:04:27,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 88 remaining) [2024-11-10 18:04:27,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 88 remaining) [2024-11-10 18:04:27,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 88 remaining) [2024-11-10 18:04:27,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 88 remaining) [2024-11-10 18:04:27,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 88 remaining) [2024-11-10 18:04:27,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 88 remaining) [2024-11-10 18:04:27,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 88 remaining) [2024-11-10 18:04:27,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 88 remaining) [2024-11-10 18:04:27,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 88 remaining) [2024-11-10 18:04:27,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 88 remaining) [2024-11-10 18:04:27,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 88 remaining) [2024-11-10 18:04:27,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 88 remaining) [2024-11-10 18:04:27,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 88 remaining) [2024-11-10 18:04:27,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 88 remaining) [2024-11-10 18:04:27,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 88 remaining) [2024-11-10 18:04:27,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 88 remaining) [2024-11-10 18:04:27,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12ASSERT_VIOLATIONMEMORY_LEAK (28 of 88 remaining) [2024-11-10 18:04:27,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 88 remaining) [2024-11-10 18:04:27,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 88 remaining) [2024-11-10 18:04:27,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 88 remaining) [2024-11-10 18:04:27,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 88 remaining) [2024-11-10 18:04:27,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 88 remaining) [2024-11-10 18:04:27,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 88 remaining) [2024-11-10 18:04:27,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 88 remaining) [2024-11-10 18:04:27,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 88 remaining) [2024-11-10 18:04:27,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 88 remaining) [2024-11-10 18:04:27,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 88 remaining) [2024-11-10 18:04:27,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 88 remaining) [2024-11-10 18:04:27,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 88 remaining) [2024-11-10 18:04:27,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 88 remaining) [2024-11-10 18:04:27,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 88 remaining) [2024-11-10 18:04:27,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 88 remaining) [2024-11-10 18:04:27,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 88 remaining) [2024-11-10 18:04:27,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 88 remaining) [2024-11-10 18:04:27,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 88 remaining) [2024-11-10 18:04:27,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 88 remaining) [2024-11-10 18:04:27,125 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 88 remaining) [2024-11-10 18:04:27,125 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 88 remaining) [2024-11-10 18:04:27,125 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 88 remaining) [2024-11-10 18:04:27,125 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 88 remaining) [2024-11-10 18:04:27,125 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 88 remaining) [2024-11-10 18:04:27,125 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 88 remaining) [2024-11-10 18:04:27,125 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 88 remaining) [2024-11-10 18:04:27,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 88 remaining) [2024-11-10 18:04:27,127 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 88 remaining) [2024-11-10 18:04:27,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 18:04:27,128 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:27,131 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 18:04:27,131 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 18:04:27,206 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 18:04:27,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 219 transitions, 454 flow [2024-11-10 18:04:27,237 INFO L124 PetriNetUnfolderBase]: 36/270 cut-off events. [2024-11-10 18:04:27,238 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 18:04:27,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 270 events. 36/270 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1300 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 206. Up to 8 conditions per place. [2024-11-10 18:04:27,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 219 transitions, 454 flow [2024-11-10 18:04:27,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 219 transitions, 454 flow [2024-11-10 18:04:27,248 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:04:27,248 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;@35754b1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:04:27,250 INFO L334 AbstractCegarLoop]: Starting to check reachability of 125 error locations. [2024-11-10 18:04:27,251 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:04:27,251 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-10 18:04:27,251 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:04:27,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:27,251 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-10 18:04:27,251 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-10 18:04:27,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:27,252 INFO L85 PathProgramCache]: Analyzing trace with hash 25680, now seen corresponding path program 1 times [2024-11-10 18:04:27,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:27,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988221240] [2024-11-10 18:04:27,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:27,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:27,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:27,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988221240] [2024-11-10 18:04:27,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988221240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:04:27,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:04:27,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:04:27,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578407683] [2024-11-10 18:04:27,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:04:27,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:04:27,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:27,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:04:27,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:04:27,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 219 [2024-11-10 18:04:27,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 219 transitions, 454 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2024-11-10 18:04:27,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:27,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 219 [2024-11-10 18:04:27,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:30,218 INFO L124 PetriNetUnfolderBase]: 15738/25699 cut-off events. [2024-11-10 18:04:30,219 INFO L125 PetriNetUnfolderBase]: For 357/405 co-relation queries the response was YES. [2024-11-10 18:04:30,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49372 conditions, 25699 events. 15738/25699 cut-off events. For 357/405 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 205415 event pairs, 13860 based on Foata normal form. 5969/25414 useless extension candidates. Maximal degree in co-relation 47767. Up to 23474 conditions per place. [2024-11-10 18:04:30,434 INFO L140 encePairwiseOnDemand]: 151/219 looper letters, 101 selfloop transitions, 1 changer transitions 0/150 dead transitions. [2024-11-10 18:04:30,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 150 transitions, 520 flow [2024-11-10 18:04:30,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:04:30,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:04:30,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2024-11-10 18:04:30,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4855403348554033 [2024-11-10 18:04:30,436 INFO L175 Difference]: Start difference. First operand has 194 places, 219 transitions, 454 flow. Second operand 3 states and 319 transitions. [2024-11-10 18:04:30,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 150 transitions, 520 flow [2024-11-10 18:04:30,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 150 transitions, 520 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:04:30,440 INFO L231 Difference]: Finished difference. Result has 142 places, 150 transitions, 318 flow [2024-11-10 18:04:30,440 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=142, PETRI_TRANSITIONS=150} [2024-11-10 18:04:30,441 INFO L277 CegarLoopForPetriNet]: 194 programPoint places, -52 predicate places. [2024-11-10 18:04:30,441 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 150 transitions, 318 flow [2024-11-10 18:04:30,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2024-11-10 18:04:30,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:30,442 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-10 18:04:30,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 18:04:30,442 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-10 18:04:30,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:30,444 INFO L85 PathProgramCache]: Analyzing trace with hash 25681, now seen corresponding path program 1 times [2024-11-10 18:04:30,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:30,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384315392] [2024-11-10 18:04:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:30,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:30,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:30,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:30,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384315392] [2024-11-10 18:04:30,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384315392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:04:30,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:04:30,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:04:30,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87034137] [2024-11-10 18:04:30,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:04:30,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:04:30,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:30,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:04:30,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:04:30,547 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 219 [2024-11-10 18:04:30,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 150 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2024-11-10 18:04:30,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:30,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 219 [2024-11-10 18:04:30,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:31,920 INFO L124 PetriNetUnfolderBase]: 10907/18085 cut-off events. [2024-11-10 18:04:31,920 INFO L125 PetriNetUnfolderBase]: For 282/330 co-relation queries the response was YES. [2024-11-10 18:04:31,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34350 conditions, 18085 events. 10907/18085 cut-off events. For 282/330 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 140117 event pairs, 9326 based on Foata normal form. 0/15221 useless extension candidates. Maximal degree in co-relation 34342. Up to 16099 conditions per place. [2024-11-10 18:04:32,145 INFO L140 encePairwiseOnDemand]: 202/219 looper letters, 85 selfloop transitions, 1 changer transitions 0/134 dead transitions. [2024-11-10 18:04:32,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 134 transitions, 458 flow [2024-11-10 18:04:32,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:04:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:04:32,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2024-11-10 18:04:32,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4018264840182648 [2024-11-10 18:04:32,148 INFO L175 Difference]: Start difference. First operand has 142 places, 150 transitions, 318 flow. Second operand 3 states and 264 transitions. [2024-11-10 18:04:32,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 134 transitions, 458 flow [2024-11-10 18:04:32,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 134 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:04:32,152 INFO L231 Difference]: Finished difference. Result has 127 places, 134 transitions, 287 flow [2024-11-10 18:04:32,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=127, PETRI_TRANSITIONS=134} [2024-11-10 18:04:32,153 INFO L277 CegarLoopForPetriNet]: 194 programPoint places, -67 predicate places. [2024-11-10 18:04:32,153 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 134 transitions, 287 flow [2024-11-10 18:04:32,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2024-11-10 18:04:32,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:32,153 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:32,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 18:04:32,154 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-10 18:04:32,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:32,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1453271213, now seen corresponding path program 1 times [2024-11-10 18:04:32,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:32,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994872409] [2024-11-10 18:04:32,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:32,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:32,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:32,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:32,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994872409] [2024-11-10 18:04:32,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994872409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:04:32,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:04:32,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:04:32,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697860510] [2024-11-10 18:04:32,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:04:32,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:04:32,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:32,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:04:32,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:04:32,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 219 [2024-11-10 18:04:32,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 134 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 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) [2024-11-10 18:04:32,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:32,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 219 [2024-11-10 18:04:32,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:33,603 INFO L124 PetriNetUnfolderBase]: 10907/18090 cut-off events. [2024-11-10 18:04:33,603 INFO L125 PetriNetUnfolderBase]: For 282/330 co-relation queries the response was YES. [2024-11-10 18:04:33,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34361 conditions, 18090 events. 10907/18090 cut-off events. For 282/330 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 139943 event pairs, 9326 based on Foata normal form. 1/15227 useless extension candidates. Maximal degree in co-relation 34352. Up to 16092 conditions per place. [2024-11-10 18:04:33,710 INFO L140 encePairwiseOnDemand]: 214/219 looper letters, 87 selfloop transitions, 4 changer transitions 0/137 dead transitions. [2024-11-10 18:04:33,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 137 transitions, 475 flow [2024-11-10 18:04:33,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:04:33,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:04:33,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 300 transitions. [2024-11-10 18:04:33,712 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3424657534246575 [2024-11-10 18:04:33,712 INFO L175 Difference]: Start difference. First operand has 127 places, 134 transitions, 287 flow. Second operand 4 states and 300 transitions. [2024-11-10 18:04:33,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 137 transitions, 475 flow [2024-11-10 18:04:33,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 137 transitions, 474 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:04:33,717 INFO L231 Difference]: Finished difference. Result has 130 places, 135 transitions, 302 flow [2024-11-10 18:04:33,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=130, PETRI_TRANSITIONS=135} [2024-11-10 18:04:33,719 INFO L277 CegarLoopForPetriNet]: 194 programPoint places, -64 predicate places. [2024-11-10 18:04:33,719 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 135 transitions, 302 flow [2024-11-10 18:04:33,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 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) [2024-11-10 18:04:33,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:33,720 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:33,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 18:04:33,720 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-10 18:04:33,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:33,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1453271183, now seen corresponding path program 1 times [2024-11-10 18:04:33,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:33,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101974884] [2024-11-10 18:04:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:33,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:33,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:33,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:33,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101974884] [2024-11-10 18:04:33,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101974884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:04:33,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:04:33,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:04:33,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991598933] [2024-11-10 18:04:33,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:04:33,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:04:33,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:33,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:04:33,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:04:33,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 219 [2024-11-10 18:04:33,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 135 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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) [2024-11-10 18:04:33,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:33,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 219 [2024-11-10 18:04:33,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:35,514 INFO L124 PetriNetUnfolderBase]: 10907/18089 cut-off events. [2024-11-10 18:04:35,514 INFO L125 PetriNetUnfolderBase]: For 283/331 co-relation queries the response was YES. [2024-11-10 18:04:35,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34366 conditions, 18089 events. 10907/18089 cut-off events. For 283/331 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 139968 event pairs, 9326 based on Foata normal form. 0/15226 useless extension candidates. Maximal degree in co-relation 34355. Up to 16100 conditions per place. [2024-11-10 18:04:35,637 INFO L140 encePairwiseOnDemand]: 215/219 looper letters, 86 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2024-11-10 18:04:35,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 136 transitions, 482 flow [2024-11-10 18:04:35,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:04:35,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:04:35,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 302 transitions. [2024-11-10 18:04:35,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3447488584474886 [2024-11-10 18:04:35,639 INFO L175 Difference]: Start difference. First operand has 130 places, 135 transitions, 302 flow. Second operand 4 states and 302 transitions. [2024-11-10 18:04:35,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 136 transitions, 482 flow [2024-11-10 18:04:35,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 136 transitions, 476 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:04:35,642 INFO L231 Difference]: Finished difference. Result has 132 places, 135 transitions, 306 flow [2024-11-10 18:04:35,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=132, PETRI_TRANSITIONS=135} [2024-11-10 18:04:35,643 INFO L277 CegarLoopForPetriNet]: 194 programPoint places, -62 predicate places. [2024-11-10 18:04:35,643 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 135 transitions, 306 flow [2024-11-10 18:04:35,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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) [2024-11-10 18:04:35,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:35,644 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:35,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 18:04:35,644 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-10 18:04:35,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:35,645 INFO L85 PathProgramCache]: Analyzing trace with hash 738100967, now seen corresponding path program 1 times [2024-11-10 18:04:35,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:35,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409858796] [2024-11-10 18:04:35,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:35,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:35,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:35,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:35,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409858796] [2024-11-10 18:04:35,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409858796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:04:35,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411263732] [2024-11-10 18:04:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:35,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:04:35,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:04:35,852 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) [2024-11-10 18:04:35,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 18:04:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:35,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 18:04:35,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:04:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:36,034 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:04:36,121 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 7 treesize of output 5 [2024-11-10 18:04:36,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:36,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411263732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:04:36,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:04:36,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-10 18:04:36,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657976529] [2024-11-10 18:04:36,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:04:36,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 18:04:36,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:36,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 18:04:36,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-11-10 18:04:36,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 219 [2024-11-10 18:04:36,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 135 transitions, 306 flow. Second operand has 14 states, 14 states have (on average 52.92857142857143) internal successors, (741), 14 states have internal predecessors, (741), 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) [2024-11-10 18:04:36,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:36,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 219 [2024-11-10 18:04:36,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:38,086 INFO L124 PetriNetUnfolderBase]: 10908/18094 cut-off events. [2024-11-10 18:04:38,087 INFO L125 PetriNetUnfolderBase]: For 288/336 co-relation queries the response was YES. [2024-11-10 18:04:38,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34381 conditions, 18094 events. 10908/18094 cut-off events. For 288/336 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 140035 event pairs, 9326 based on Foata normal form. 1/15232 useless extension candidates. Maximal degree in co-relation 34369. Up to 16092 conditions per place. [2024-11-10 18:04:38,196 INFO L140 encePairwiseOnDemand]: 213/219 looper letters, 89 selfloop transitions, 7 changer transitions 0/141 dead transitions. [2024-11-10 18:04:38,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 141 transitions, 510 flow [2024-11-10 18:04:38,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 18:04:38,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 18:04:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 454 transitions. [2024-11-10 18:04:38,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29615133724722764 [2024-11-10 18:04:38,199 INFO L175 Difference]: Start difference. First operand has 132 places, 135 transitions, 306 flow. Second operand 7 states and 454 transitions. [2024-11-10 18:04:38,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 141 transitions, 510 flow [2024-11-10 18:04:38,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 141 transitions, 502 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:04:38,204 INFO L231 Difference]: Finished difference. Result has 134 places, 136 transitions, 317 flow [2024-11-10 18:04:38,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=317, PETRI_PLACES=134, PETRI_TRANSITIONS=136} [2024-11-10 18:04:38,205 INFO L277 CegarLoopForPetriNet]: 194 programPoint places, -60 predicate places. [2024-11-10 18:04:38,205 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 136 transitions, 317 flow [2024-11-10 18:04:38,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 52.92857142857143) internal successors, (741), 14 states have internal predecessors, (741), 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) [2024-11-10 18:04:38,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:38,206 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:38,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 18:04:38,406 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,SelfDestructingSolverStorable15 [2024-11-10 18:04:38,407 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-10 18:04:38,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:38,407 INFO L85 PathProgramCache]: Analyzing trace with hash 738100997, now seen corresponding path program 1 times [2024-11-10 18:04:38,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:38,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069930110] [2024-11-10 18:04:38,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:38,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:38,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:38,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:38,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069930110] [2024-11-10 18:04:38,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069930110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:04:38,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194856601] [2024-11-10 18:04:38,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:38,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:04:38,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:04:38,506 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:04:38,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 18:04:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:38,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 18:04:38,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:04:38,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:38,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:04:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:38,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194856601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:04:38,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:04:38,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-10 18:04:38,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517103641] [2024-11-10 18:04:38,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:04:38,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 18:04:38,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:38,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 18:04:38,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-10 18:04:38,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 219 [2024-11-10 18:04:38,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 136 transitions, 317 flow. Second operand has 8 states, 8 states have (on average 53.25) internal successors, (426), 8 states have internal predecessors, (426), 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) [2024-11-10 18:04:38,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:38,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 219 [2024-11-10 18:04:38,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:40,289 INFO L124 PetriNetUnfolderBase]: 10907/18092 cut-off events. [2024-11-10 18:04:40,289 INFO L125 PetriNetUnfolderBase]: For 295/343 co-relation queries the response was YES. [2024-11-10 18:04:40,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34384 conditions, 18092 events. 10907/18092 cut-off events. For 295/343 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 139893 event pairs, 9326 based on Foata normal form. 1/15231 useless extension candidates. Maximal degree in co-relation 34372. Up to 16092 conditions per place. [2024-11-10 18:04:40,380 INFO L140 encePairwiseOnDemand]: 213/219 looper letters, 87 selfloop transitions, 7 changer transitions 0/139 dead transitions. [2024-11-10 18:04:40,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 139 transitions, 516 flow [2024-11-10 18:04:40,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:04:40,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:04:40,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 401 transitions. [2024-11-10 18:04:40,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3051750380517504 [2024-11-10 18:04:40,382 INFO L175 Difference]: Start difference. First operand has 134 places, 136 transitions, 317 flow. Second operand 6 states and 401 transitions. [2024-11-10 18:04:40,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 139 transitions, 516 flow [2024-11-10 18:04:40,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 139 transitions, 507 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-10 18:04:40,385 INFO L231 Difference]: Finished difference. Result has 137 places, 136 transitions, 329 flow [2024-11-10 18:04:40,386 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=329, PETRI_PLACES=137, PETRI_TRANSITIONS=136} [2024-11-10 18:04:40,386 INFO L277 CegarLoopForPetriNet]: 194 programPoint places, -57 predicate places. [2024-11-10 18:04:40,386 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 136 transitions, 329 flow [2024-11-10 18:04:40,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 53.25) internal successors, (426), 8 states have internal predecessors, (426), 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) [2024-11-10 18:04:40,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:40,387 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:40,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 18:04:40,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-10 18:04:40,587 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-10 18:04:40,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:40,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1800862045, now seen corresponding path program 2 times [2024-11-10 18:04:40,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:40,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625079190] [2024-11-10 18:04:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:40,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 18:04:40,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:40,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625079190] [2024-11-10 18:04:40,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625079190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:04:40,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:04:40,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:04:40,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586072044] [2024-11-10 18:04:40,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:04:40,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:04:40,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:40,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:04:40,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:04:40,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 219 [2024-11-10 18:04:40,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 136 transitions, 329 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2024-11-10 18:04:40,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:40,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 219 [2024-11-10 18:04:40,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:42,539 INFO L124 PetriNetUnfolderBase]: 10907/18091 cut-off events. [2024-11-10 18:04:42,539 INFO L125 PetriNetUnfolderBase]: For 295/343 co-relation queries the response was YES. [2024-11-10 18:04:42,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34383 conditions, 18091 events. 10907/18091 cut-off events. For 295/343 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 139786 event pairs, 9326 based on Foata normal form. 0/15230 useless extension candidates. Maximal degree in co-relation 34370. Up to 16092 conditions per place. [2024-11-10 18:04:42,642 INFO L140 encePairwiseOnDemand]: 216/219 looper letters, 84 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2024-11-10 18:04:42,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 135 transitions, 499 flow [2024-11-10 18:04:42,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:04:42,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:04:42,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2024-11-10 18:04:42,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3759512937595129 [2024-11-10 18:04:42,644 INFO L175 Difference]: Start difference. First operand has 137 places, 136 transitions, 329 flow. Second operand 3 states and 247 transitions. [2024-11-10 18:04:42,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 135 transitions, 499 flow [2024-11-10 18:04:42,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 135 transitions, 485 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:04:42,651 INFO L231 Difference]: Finished difference. Result has 134 places, 135 transitions, 317 flow [2024-11-10 18:04:42,652 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=134, PETRI_TRANSITIONS=135} [2024-11-10 18:04:42,652 INFO L277 CegarLoopForPetriNet]: 194 programPoint places, -60 predicate places. [2024-11-10 18:04:42,653 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 135 transitions, 317 flow [2024-11-10 18:04:42,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2024-11-10 18:04:42,653 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:42,653 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:42,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-10 18:04:42,654 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-10 18:04:42,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:42,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1950752412, now seen corresponding path program 1 times [2024-11-10 18:04:42,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:42,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102275675] [2024-11-10 18:04:42,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:42,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:42,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 18:04:42,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:42,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102275675] [2024-11-10 18:04:42,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102275675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:04:42,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:04:42,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:04:42,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101090741] [2024-11-10 18:04:42,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:04:42,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:04:42,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:42,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:04:42,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:04:42,818 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 219 [2024-11-10 18:04:42,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 135 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2024-11-10 18:04:42,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:42,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 219 [2024-11-10 18:04:42,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:44,316 INFO L124 PetriNetUnfolderBase]: 10907/18058 cut-off events. [2024-11-10 18:04:44,317 INFO L125 PetriNetUnfolderBase]: For 287/335 co-relation queries the response was YES. [2024-11-10 18:04:44,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34345 conditions, 18058 events. 10907/18058 cut-off events. For 287/335 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 139338 event pairs, 9326 based on Foata normal form. 2185/17415 useless extension candidates. Maximal degree in co-relation 34332. Up to 16101 conditions per place. [2024-11-10 18:04:44,398 INFO L140 encePairwiseOnDemand]: 216/219 looper letters, 85 selfloop transitions, 1 changer transitions 0/133 dead transitions. [2024-11-10 18:04:44,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 133 transitions, 485 flow [2024-11-10 18:04:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:04:44,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:04:44,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-11-10 18:04:44,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3683409436834094 [2024-11-10 18:04:44,401 INFO L175 Difference]: Start difference. First operand has 134 places, 135 transitions, 317 flow. Second operand 3 states and 242 transitions. [2024-11-10 18:04:44,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 133 transitions, 485 flow [2024-11-10 18:04:44,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 133 transitions, 481 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:04:44,404 INFO L231 Difference]: Finished difference. Result has 132 places, 133 transitions, 311 flow [2024-11-10 18:04:44,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=132, PETRI_TRANSITIONS=133} [2024-11-10 18:04:44,405 INFO L277 CegarLoopForPetriNet]: 194 programPoint places, -62 predicate places. [2024-11-10 18:04:44,405 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 133 transitions, 311 flow [2024-11-10 18:04:44,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2024-11-10 18:04:44,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:44,405 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:44,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-10 18:04:44,406 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-10 18:04:44,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:44,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1950752411, now seen corresponding path program 1 times [2024-11-10 18:04:44,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:44,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849667595] [2024-11-10 18:04:44,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:44,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 18:04:44,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:44,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849667595] [2024-11-10 18:04:44,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849667595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:04:44,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:04:44,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:04:44,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969669023] [2024-11-10 18:04:44,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:04:44,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:04:44,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:44,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:04:44,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:04:44,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 219 [2024-11-10 18:04:44,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 133 transitions, 311 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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) [2024-11-10 18:04:44,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:44,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 219 [2024-11-10 18:04:44,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:46,591 INFO L124 PetriNetUnfolderBase]: 13391/23103 cut-off events. [2024-11-10 18:04:46,591 INFO L125 PetriNetUnfolderBase]: For 365/365 co-relation queries the response was YES. [2024-11-10 18:04:46,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42925 conditions, 23103 events. 13391/23103 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 185517 event pairs, 5504 based on Foata normal form. 2049/20611 useless extension candidates. Maximal degree in co-relation 42912. Up to 16153 conditions per place. [2024-11-10 18:04:46,714 INFO L140 encePairwiseOnDemand]: 210/219 looper letters, 159 selfloop transitions, 5 changer transitions 0/206 dead transitions. [2024-11-10 18:04:46,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 206 transitions, 791 flow [2024-11-10 18:04:46,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:04:46,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:04:46,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2024-11-10 18:04:46,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4132420091324201 [2024-11-10 18:04:46,715 INFO L175 Difference]: Start difference. First operand has 132 places, 133 transitions, 311 flow. Second operand 4 states and 362 transitions. [2024-11-10 18:04:46,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 206 transitions, 791 flow [2024-11-10 18:04:46,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 206 transitions, 790 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:04:46,720 INFO L231 Difference]: Finished difference. Result has 135 places, 135 transitions, 340 flow [2024-11-10 18:04:46,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=135, PETRI_TRANSITIONS=135} [2024-11-10 18:04:46,720 INFO L277 CegarLoopForPetriNet]: 194 programPoint places, -59 predicate places. [2024-11-10 18:04:46,721 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 135 transitions, 340 flow [2024-11-10 18:04:46,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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) [2024-11-10 18:04:46,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:46,721 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:46,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-10 18:04:46,721 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-10 18:04:46,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:46,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1317274844, now seen corresponding path program 1 times [2024-11-10 18:04:46,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:46,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813777154] [2024-11-10 18:04:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:46,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:46,912 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 18:04:46,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:46,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813777154] [2024-11-10 18:04:46,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813777154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:04:46,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207374324] [2024-11-10 18:04:46,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:46,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:04:46,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:04:46,916 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:04:46,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 18:04:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:47,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 18:04:47,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:04:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 18:04:47,394 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:04:47,513 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 18:04:47,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207374324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:04:47,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:04:47,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-10 18:04:47,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55605971] [2024-11-10 18:04:47,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:04:47,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 18:04:47,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:47,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 18:04:47,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-10 18:04:47,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 219 [2024-11-10 18:04:47,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 135 transitions, 340 flow. Second operand has 11 states, 11 states have (on average 50.54545454545455) internal successors, (556), 11 states have internal predecessors, (556), 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) [2024-11-10 18:04:47,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:47,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 219 [2024-11-10 18:04:47,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:04:49,007 INFO L124 PetriNetUnfolderBase]: 8372/15320 cut-off events. [2024-11-10 18:04:49,007 INFO L125 PetriNetUnfolderBase]: For 3283/3283 co-relation queries the response was YES. [2024-11-10 18:04:49,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29167 conditions, 15320 events. 8372/15320 cut-off events. For 3283/3283 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 125261 event pairs, 190 based on Foata normal form. 2244/15566 useless extension candidates. Maximal degree in co-relation 29152. Up to 10135 conditions per place. [2024-11-10 18:04:49,081 INFO L140 encePairwiseOnDemand]: 214/219 looper letters, 185 selfloop transitions, 4 changer transitions 0/226 dead transitions. [2024-11-10 18:04:49,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 226 transitions, 878 flow [2024-11-10 18:04:49,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:04:49,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:04:49,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 473 transitions. [2024-11-10 18:04:49,083 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3599695585996956 [2024-11-10 18:04:49,083 INFO L175 Difference]: Start difference. First operand has 135 places, 135 transitions, 340 flow. Second operand 6 states and 473 transitions. [2024-11-10 18:04:49,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 226 transitions, 878 flow [2024-11-10 18:04:49,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 226 transitions, 874 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:04:49,089 INFO L231 Difference]: Finished difference. Result has 126 places, 120 transitions, 292 flow [2024-11-10 18:04:49,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=126, PETRI_TRANSITIONS=120} [2024-11-10 18:04:49,089 INFO L277 CegarLoopForPetriNet]: 194 programPoint places, -68 predicate places. [2024-11-10 18:04:49,090 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 120 transitions, 292 flow [2024-11-10 18:04:49,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.54545454545455) internal successors, (556), 11 states have internal predecessors, (556), 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) [2024-11-10 18:04:49,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:49,090 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:49,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 18:04:49,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:04:49,291 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-10 18:04:49,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:49,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1081486340, now seen corresponding path program 1 times [2024-11-10 18:04:49,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:49,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100899563] [2024-11-10 18:04:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:49,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:04:49,319 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:04:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:04:49,339 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:04:49,339 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:04:49,339 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (124 of 125 remaining) [2024-11-10 18:04:49,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (123 of 125 remaining) [2024-11-10 18:04:49,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (122 of 125 remaining) [2024-11-10 18:04:49,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (121 of 125 remaining) [2024-11-10 18:04:49,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (120 of 125 remaining) [2024-11-10 18:04:49,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (119 of 125 remaining) [2024-11-10 18:04:49,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (118 of 125 remaining) [2024-11-10 18:04:49,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 125 remaining) [2024-11-10 18:04:49,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 125 remaining) [2024-11-10 18:04:49,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 125 remaining) [2024-11-10 18:04:49,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 125 remaining) [2024-11-10 18:04:49,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 125 remaining) [2024-11-10 18:04:49,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 125 remaining) [2024-11-10 18:04:49,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (111 of 125 remaining) [2024-11-10 18:04:49,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 125 remaining) [2024-11-10 18:04:49,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 125 remaining) [2024-11-10 18:04:49,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 125 remaining) [2024-11-10 18:04:49,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 125 remaining) [2024-11-10 18:04:49,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 125 remaining) [2024-11-10 18:04:49,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 125 remaining) [2024-11-10 18:04:49,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 125 remaining) [2024-11-10 18:04:49,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 125 remaining) [2024-11-10 18:04:49,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12ASSERT_VIOLATIONMEMORY_LEAK (102 of 125 remaining) [2024-11-10 18:04:49,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 125 remaining) [2024-11-10 18:04:49,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 125 remaining) [2024-11-10 18:04:49,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 125 remaining) [2024-11-10 18:04:49,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 125 remaining) [2024-11-10 18:04:49,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 125 remaining) [2024-11-10 18:04:49,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 125 remaining) [2024-11-10 18:04:49,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 125 remaining) [2024-11-10 18:04:49,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 125 remaining) [2024-11-10 18:04:49,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 125 remaining) [2024-11-10 18:04:49,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 125 remaining) [2024-11-10 18:04:49,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 125 remaining) [2024-11-10 18:04:49,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 125 remaining) [2024-11-10 18:04:49,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 125 remaining) [2024-11-10 18:04:49,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 125 remaining) [2024-11-10 18:04:49,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 125 remaining) [2024-11-10 18:04:49,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 125 remaining) [2024-11-10 18:04:49,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 125 remaining) [2024-11-10 18:04:49,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 125 remaining) [2024-11-10 18:04:49,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 125 remaining) [2024-11-10 18:04:49,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 125 remaining) [2024-11-10 18:04:49,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 125 remaining) [2024-11-10 18:04:49,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 125 remaining) [2024-11-10 18:04:49,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 125 remaining) [2024-11-10 18:04:49,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 125 remaining) [2024-11-10 18:04:49,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 125 remaining) [2024-11-10 18:04:49,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 125 remaining) [2024-11-10 18:04:49,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 125 remaining) [2024-11-10 18:04:49,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 125 remaining) [2024-11-10 18:04:49,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 125 remaining) [2024-11-10 18:04:49,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 125 remaining) [2024-11-10 18:04:49,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 125 remaining) [2024-11-10 18:04:49,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 125 remaining) [2024-11-10 18:04:49,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 125 remaining) [2024-11-10 18:04:49,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 125 remaining) [2024-11-10 18:04:49,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 125 remaining) [2024-11-10 18:04:49,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 125 remaining) [2024-11-10 18:04:49,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12ASSERT_VIOLATIONMEMORY_LEAK (65 of 125 remaining) [2024-11-10 18:04:49,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 125 remaining) [2024-11-10 18:04:49,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 125 remaining) [2024-11-10 18:04:49,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 125 remaining) [2024-11-10 18:04:49,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 125 remaining) [2024-11-10 18:04:49,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 125 remaining) [2024-11-10 18:04:49,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 125 remaining) [2024-11-10 18:04:49,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 125 remaining) [2024-11-10 18:04:49,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 125 remaining) [2024-11-10 18:04:49,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 125 remaining) [2024-11-10 18:04:49,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 125 remaining) [2024-11-10 18:04:49,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 125 remaining) [2024-11-10 18:04:49,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 125 remaining) [2024-11-10 18:04:49,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 125 remaining) [2024-11-10 18:04:49,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 125 remaining) [2024-11-10 18:04:49,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 125 remaining) [2024-11-10 18:04:49,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 125 remaining) [2024-11-10 18:04:49,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 125 remaining) [2024-11-10 18:04:49,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 125 remaining) [2024-11-10 18:04:49,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 125 remaining) [2024-11-10 18:04:49,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 125 remaining) [2024-11-10 18:04:49,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 125 remaining) [2024-11-10 18:04:49,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 125 remaining) [2024-11-10 18:04:49,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 125 remaining) [2024-11-10 18:04:49,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 125 remaining) [2024-11-10 18:04:49,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 125 remaining) [2024-11-10 18:04:49,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 125 remaining) [2024-11-10 18:04:49,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 125 remaining) [2024-11-10 18:04:49,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 125 remaining) [2024-11-10 18:04:49,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 125 remaining) [2024-11-10 18:04:49,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 125 remaining) [2024-11-10 18:04:49,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 125 remaining) [2024-11-10 18:04:49,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 125 remaining) [2024-11-10 18:04:49,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 125 remaining) [2024-11-10 18:04:49,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 125 remaining) [2024-11-10 18:04:49,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 125 remaining) [2024-11-10 18:04:49,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 125 remaining) [2024-11-10 18:04:49,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12ASSERT_VIOLATIONMEMORY_LEAK (28 of 125 remaining) [2024-11-10 18:04:49,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 125 remaining) [2024-11-10 18:04:49,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 125 remaining) [2024-11-10 18:04:49,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 125 remaining) [2024-11-10 18:04:49,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 125 remaining) [2024-11-10 18:04:49,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 125 remaining) [2024-11-10 18:04:49,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 125 remaining) [2024-11-10 18:04:49,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 125 remaining) [2024-11-10 18:04:49,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 125 remaining) [2024-11-10 18:04:49,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 125 remaining) [2024-11-10 18:04:49,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 125 remaining) [2024-11-10 18:04:49,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 125 remaining) [2024-11-10 18:04:49,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 125 remaining) [2024-11-10 18:04:49,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 125 remaining) [2024-11-10 18:04:49,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 125 remaining) [2024-11-10 18:04:49,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 125 remaining) [2024-11-10 18:04:49,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 125 remaining) [2024-11-10 18:04:49,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 125 remaining) [2024-11-10 18:04:49,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 125 remaining) [2024-11-10 18:04:49,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 125 remaining) [2024-11-10 18:04:49,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 125 remaining) [2024-11-10 18:04:49,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 125 remaining) [2024-11-10 18:04:49,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 125 remaining) [2024-11-10 18:04:49,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 125 remaining) [2024-11-10 18:04:49,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 125 remaining) [2024-11-10 18:04:49,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 125 remaining) [2024-11-10 18:04:49,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 125 remaining) [2024-11-10 18:04:49,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 125 remaining) [2024-11-10 18:04:49,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 125 remaining) [2024-11-10 18:04:49,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-10 18:04:49,357 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:04:49,358 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 18:04:49,358 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 18:04:49,421 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 18:04:49,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 308 transitions, 643 flow [2024-11-10 18:04:49,473 INFO L124 PetriNetUnfolderBase]: 58/419 cut-off events. [2024-11-10 18:04:49,474 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-10 18:04:49,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 419 events. 58/419 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2289 event pairs, 1 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 321. Up to 16 conditions per place. [2024-11-10 18:04:49,480 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 308 transitions, 643 flow [2024-11-10 18:04:49,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 308 transitions, 643 flow [2024-11-10 18:04:49,490 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:04:49,491 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;@35754b1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:04:49,491 INFO L334 AbstractCegarLoop]: Starting to check reachability of 162 error locations. [2024-11-10 18:04:49,492 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:04:49,492 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-10 18:04:49,492 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:04:49,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:04:49,492 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-10 18:04:49,492 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2024-11-10 18:04:49,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:04:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash 35536, now seen corresponding path program 1 times [2024-11-10 18:04:49,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:04:49,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520171753] [2024-11-10 18:04:49,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:04:49,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:04:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:04:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:04:49,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:04:49,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520171753] [2024-11-10 18:04:49,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520171753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:04:49,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:04:49,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:04:49,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96872805] [2024-11-10 18:04:49,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:04:49,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:04:49,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:04:49,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:04:49,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:04:49,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 308 [2024-11-10 18:04:49,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 308 transitions, 643 flow. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2024-11-10 18:04:49,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:04:49,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 308 [2024-11-10 18:04:49,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand