./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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/weaver/parallel-parallel-sum-1.wvr.c -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 b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:45:41,204 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:45:41,247 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:45:41,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:45:41,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:45:41,272 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:45:41,273 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:45:41,273 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:45:41,274 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:45:41,274 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:45:41,274 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:45:41,275 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:45:41,275 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:45:41,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:45:41,276 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:45:41,276 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:45:41,277 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:45:41,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:45:41,279 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:45:41,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:45:41,279 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:45:41,283 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:45:41,283 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:45:41,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:45:41,284 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:45:41,284 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:45:41,284 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:45:41,285 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:45:41,285 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:45:41,285 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:45:41,285 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:45:41,285 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:45:41,286 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:45:41,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:45:41,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:45:41,286 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:45:41,287 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:45:41,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:45:41,287 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:45:41,287 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:45:41,287 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:45:41,287 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:45:41,288 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 [2024-11-22 21:45:41,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:45:41,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:45:41,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:45:41,563 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:45:41,563 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:45:41,564 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2024-11-22 21:45:42,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:45:42,981 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:45:42,981 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2024-11-22 21:45:42,990 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd0d64077/f5cefc04eacc41fe818c6f18cb99bf55/FLAGc76f7b225 [2024-11-22 21:45:43,003 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd0d64077/f5cefc04eacc41fe818c6f18cb99bf55 [2024-11-22 21:45:43,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:45:43,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:45:43,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:45:43,007 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:45:43,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:45:43,014 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:45:43" (1/1) ... [2024-11-22 21:45:43,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b5da149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:43, skipping insertion in model container [2024-11-22 21:45:43,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:45:43" (1/1) ... [2024-11-22 21:45:43,034 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:45:43,203 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:45:43,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:45:43,218 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:45:43,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:45:43,253 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:45:43,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:43 WrapperNode [2024-11-22 21:45:43,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:45:43,254 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:45:43,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:45:43,254 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:45:43,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:43" (1/1) ... [2024-11-22 21:45:43,272 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:43" (1/1) ... [2024-11-22 21:45:43,305 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 297 [2024-11-22 21:45:43,305 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:45:43,311 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:45:43,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:45:43,311 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:45:43,323 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:43" (1/1) ... [2024-11-22 21:45:43,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:43" (1/1) ... [2024-11-22 21:45:43,333 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:43" (1/1) ... [2024-11-22 21:45:43,359 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-22 21:45:43,359 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:43" (1/1) ... [2024-11-22 21:45:43,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:43" (1/1) ... [2024-11-22 21:45:43,369 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:43" (1/1) ... [2024-11-22 21:45:43,377 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:43" (1/1) ... [2024-11-22 21:45:43,379 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:43" (1/1) ... [2024-11-22 21:45:43,380 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:43" (1/1) ... [2024-11-22 21:45:43,382 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:45:43,384 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:45:43,384 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:45:43,384 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:45:43,385 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:43" (1/1) ... [2024-11-22 21:45:43,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:45:43,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:45:43,421 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) [2024-11-22 21:45:43,424 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 [2024-11-22 21:45:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:45:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 21:45:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 21:45:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 21:45:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 21:45:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 21:45:43,459 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 21:45:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 21:45:43,459 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 21:45:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 21:45:43,459 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 21:45:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-22 21:45:43,459 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-22 21:45:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:45:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 21:45:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 21:45:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 21:45:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 21:45:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:45:43,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:45:43,462 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:45:43,596 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:45:43,598 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:45:43,938 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:45:43,939 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:45:44,198 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:45:44,199 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-22 21:45:44,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:45:44 BoogieIcfgContainer [2024-11-22 21:45:44,199 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:45:44,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:45:44,201 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:45:44,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:45:44,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:45:43" (1/3) ... [2024-11-22 21:45:44,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b72f504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:45:44, skipping insertion in model container [2024-11-22 21:45:44,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:43" (2/3) ... [2024-11-22 21:45:44,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b72f504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:45:44, skipping insertion in model container [2024-11-22 21:45:44,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:45:44" (3/3) ... [2024-11-22 21:45:44,205 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2024-11-22 21:45:44,236 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:45:44,237 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-22 21:45:44,237 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:45:44,284 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-22 21:45:44,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 67 transitions, 162 flow [2024-11-22 21:45:44,341 INFO L124 PetriNetUnfolderBase]: 9/63 cut-off events. [2024-11-22 21:45:44,342 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 21:45:44,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 63 events. 9/63 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 151 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-11-22 21:45:44,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 67 transitions, 162 flow [2024-11-22 21:45:44,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 62 transitions, 148 flow [2024-11-22 21:45:44,359 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:45:44,364 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;@d44cb81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:45:44,365 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-22 21:45:44,367 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:45:44,367 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-22 21:45:44,367 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:45:44,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:44,368 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-22 21:45:44,368 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-22 21:45:44,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:44,372 INFO L85 PathProgramCache]: Analyzing trace with hash 882549, now seen corresponding path program 1 times [2024-11-22 21:45:44,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:44,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471342765] [2024-11-22 21:45:44,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:45:44,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:44,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:44,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471342765] [2024-11-22 21:45:44,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471342765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:45:44,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:45:44,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:45:44,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643681222] [2024-11-22 21:45:44,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:45:44,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:45:44,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:44,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:45:44,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:45:44,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 67 [2024-11-22 21:45:44,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-22 21:45:44,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:44,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 67 [2024-11-22 21:45:44,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:48,787 INFO L124 PetriNetUnfolderBase]: 52585/68171 cut-off events. [2024-11-22 21:45:48,787 INFO L125 PetriNetUnfolderBase]: For 2931/2931 co-relation queries the response was YES. [2024-11-22 21:45:48,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138723 conditions, 68171 events. 52585/68171 cut-off events. For 2931/2931 co-relation queries the response was YES. Maximal size of possible extension queue 2690. Compared 379823 event pairs, 45974 based on Foata normal form. 1/48215 useless extension candidates. Maximal degree in co-relation 131525. Up to 68084 conditions per place. [2024-11-22 21:45:49,215 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 47 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-11-22 21:45:49,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 55 transitions, 232 flow [2024-11-22 21:45:49,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:45:49,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:45:49,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-11-22 21:45:49,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43781094527363185 [2024-11-22 21:45:49,225 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 148 flow. Second operand 3 states and 88 transitions. [2024-11-22 21:45:49,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 55 transitions, 232 flow [2024-11-22 21:45:49,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 216 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-22 21:45:49,246 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 122 flow [2024-11-22 21:45:49,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2024-11-22 21:45:49,250 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -9 predicate places. [2024-11-22 21:45:49,251 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 122 flow [2024-11-22 21:45:49,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-22 21:45:49,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:49,251 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-22 21:45:49,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:45:49,252 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-22 21:45:49,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:49,252 INFO L85 PathProgramCache]: Analyzing trace with hash 882550, now seen corresponding path program 1 times [2024-11-22 21:45:49,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:49,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426585155] [2024-11-22 21:45:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:45:49,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:49,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:49,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426585155] [2024-11-22 21:45:49,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426585155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:45:49,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:45:49,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:45:49,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220687744] [2024-11-22 21:45:49,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:45:49,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:45:49,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:49,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:45:49,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:45:49,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 67 [2024-11-22 21:45:49,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:49,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:49,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 67 [2024-11-22 21:45:49,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:52,846 INFO L124 PetriNetUnfolderBase]: 52585/68170 cut-off events. [2024-11-22 21:45:52,847 INFO L125 PetriNetUnfolderBase]: For 665/665 co-relation queries the response was YES. [2024-11-22 21:45:52,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137081 conditions, 68170 events. 52585/68170 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 2690. Compared 380010 event pairs, 45974 based on Foata normal form. 0/48214 useless extension candidates. Maximal degree in co-relation 137068. Up to 68084 conditions per place. [2024-11-22 21:45:53,125 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 45 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2024-11-22 21:45:53,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 218 flow [2024-11-22 21:45:53,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:45:53,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:45:53,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-22 21:45:53,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35074626865671643 [2024-11-22 21:45:53,128 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 122 flow. Second operand 4 states and 94 transitions. [2024-11-22 21:45:53,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 218 flow [2024-11-22 21:45:53,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:45:53,129 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 124 flow [2024-11-22 21:45:53,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-11-22 21:45:53,130 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -9 predicate places. [2024-11-22 21:45:53,130 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 124 flow [2024-11-22 21:45:53,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:53,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:53,131 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:53,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:45:53,132 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-22 21:45:53,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:53,134 INFO L85 PathProgramCache]: Analyzing trace with hash -852936496, now seen corresponding path program 1 times [2024-11-22 21:45:53,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:53,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570506287] [2024-11-22 21:45:53,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:45:53,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:53,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:53,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:53,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570506287] [2024-11-22 21:45:53,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570506287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:45:53,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:45:53,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:45:53,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331687268] [2024-11-22 21:45:53,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:45:53,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:45:53,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:53,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:45:53,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:45:53,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 67 [2024-11-22 21:45:53,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:53,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:53,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 67 [2024-11-22 21:45:53,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:55,266 INFO L124 PetriNetUnfolderBase]: 33332/43282 cut-off events. [2024-11-22 21:45:55,266 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-11-22 21:45:55,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87080 conditions, 43282 events. 33332/43282 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 1681. Compared 229656 event pairs, 28616 based on Foata normal form. 0/33739 useless extension candidates. Maximal degree in co-relation 87065. Up to 43203 conditions per place. [2024-11-22 21:45:55,433 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 43 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-11-22 21:45:55,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 206 flow [2024-11-22 21:45:55,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:45:55,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:45:55,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-22 21:45:55,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34701492537313433 [2024-11-22 21:45:55,437 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 124 flow. Second operand 4 states and 93 transitions. [2024-11-22 21:45:55,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 206 flow [2024-11-22 21:45:55,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 50 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:45:55,438 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 112 flow [2024-11-22 21:45:55,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-11-22 21:45:55,439 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -13 predicate places. [2024-11-22 21:45:55,439 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 112 flow [2024-11-22 21:45:55,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:55,440 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:55,440 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:55,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:45:55,441 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-22 21:45:55,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:55,442 INFO L85 PathProgramCache]: Analyzing trace with hash -852936495, now seen corresponding path program 1 times [2024-11-22 21:45:55,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:55,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360114184] [2024-11-22 21:45:55,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:45:55,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:55,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:55,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360114184] [2024-11-22 21:45:55,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360114184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:45:55,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:45:55,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:45:55,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020433235] [2024-11-22 21:45:55,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:45:55,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:45:55,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:55,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:45:55,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:45:55,511 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 67 [2024-11-22 21:45:55,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-22 21:45:55,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:55,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 67 [2024-11-22 21:45:55,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:58,297 INFO L124 PetriNetUnfolderBase]: 45012/59021 cut-off events. [2024-11-22 21:45:58,297 INFO L125 PetriNetUnfolderBase]: For 728/728 co-relation queries the response was YES. [2024-11-22 21:45:58,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118683 conditions, 59021 events. 45012/59021 cut-off events. For 728/728 co-relation queries the response was YES. Maximal size of possible extension queue 2092. Compared 331521 event pairs, 39355 based on Foata normal form. 1507/47739 useless extension candidates. Maximal degree in co-relation 86609. Up to 42952 conditions per place. [2024-11-22 21:45:58,543 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 78 selfloop transitions, 3 changer transitions 1/87 dead transitions. [2024-11-22 21:45:58,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 87 transitions, 360 flow [2024-11-22 21:45:58,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:45:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:45:58,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-22 21:45:58,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.503731343283582 [2024-11-22 21:45:58,547 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 112 flow. Second operand 4 states and 135 transitions. [2024-11-22 21:45:58,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 87 transitions, 360 flow [2024-11-22 21:45:58,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 87 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:45:58,550 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 138 flow [2024-11-22 21:45:58,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-11-22 21:45:58,551 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -10 predicate places. [2024-11-22 21:45:58,552 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 138 flow [2024-11-22 21:45:58,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-22 21:45:58,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:58,552 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:58,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:45:58,553 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-22 21:45:58,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:58,553 INFO L85 PathProgramCache]: Analyzing trace with hash -2086864114, now seen corresponding path program 1 times [2024-11-22 21:45:58,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:58,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063788386] [2024-11-22 21:45:58,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:45:58,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:58,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:58,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063788386] [2024-11-22 21:45:58,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063788386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:45:58,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079378962] [2024-11-22 21:45:58,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:45:58,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:58,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:45:58,646 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) [2024-11-22 21:45:58,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:45:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:58,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 21:45:58,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:45:58,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:58,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:45:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:58,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079378962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:45:58,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:45:58,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2024-11-22 21:45:58,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606538078] [2024-11-22 21:45:58,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:45:58,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:45:58,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:58,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:45:58,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-22 21:45:58,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 67 [2024-11-22 21:45:58,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 138 flow. Second operand has 10 states, 10 states have (on average 14.0) internal successors, (140), 10 states have internal predecessors, (140), 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) [2024-11-22 21:45:58,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:58,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 67 [2024-11-22 21:45:58,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:46:02,313 INFO L124 PetriNetUnfolderBase]: 56893/74963 cut-off events. [2024-11-22 21:46:02,313 INFO L125 PetriNetUnfolderBase]: For 4800/4800 co-relation queries the response was YES. [2024-11-22 21:46:02,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155499 conditions, 74963 events. 56893/74963 cut-off events. For 4800/4800 co-relation queries the response was YES. Maximal size of possible extension queue 2372. Compared 435402 event pairs, 50289 based on Foata normal form. 1506/60209 useless extension candidates. Maximal degree in co-relation 123426. Up to 42950 conditions per place. [2024-11-22 21:46:02,650 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 78 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2024-11-22 21:46:02,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 91 transitions, 403 flow [2024-11-22 21:46:02,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:46:02,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:46:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-11-22 21:46:02,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37100213219616207 [2024-11-22 21:46:02,652 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 138 flow. Second operand 7 states and 174 transitions. [2024-11-22 21:46:02,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 91 transitions, 403 flow [2024-11-22 21:46:02,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 91 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:46:02,656 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 191 flow [2024-11-22 21:46:02,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=191, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2024-11-22 21:46:02,657 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -2 predicate places. [2024-11-22 21:46:02,657 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 191 flow [2024-11-22 21:46:02,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.0) internal successors, (140), 10 states have internal predecessors, (140), 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) [2024-11-22 21:46:02,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:46:02,658 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:46:02,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 21:46:02,861 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 [2024-11-22 21:46:02,862 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-22 21:46:02,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:46:02,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1222540746, now seen corresponding path program 1 times [2024-11-22 21:46:02,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:46:02,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968384769] [2024-11-22 21:46:02,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:46:02,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:46:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:46:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:46:02,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:46:02,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968384769] [2024-11-22 21:46:02,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968384769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:46:02,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:46:02,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:46:02,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170127787] [2024-11-22 21:46:02,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:46:02,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:46:02,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:46:02,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:46:02,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:46:02,936 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 67 [2024-11-22 21:46:02,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:46:02,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:46:02,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 67 [2024-11-22 21:46:02,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:46:06,156 INFO L124 PetriNetUnfolderBase]: 49569/65350 cut-off events. [2024-11-22 21:46:06,156 INFO L125 PetriNetUnfolderBase]: For 7732/7732 co-relation queries the response was YES. [2024-11-22 21:46:06,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141014 conditions, 65350 events. 49569/65350 cut-off events. For 7732/7732 co-relation queries the response was YES. Maximal size of possible extension queue 2294. Compared 376900 event pairs, 43898 based on Foata normal form. 611/51887 useless extension candidates. Maximal degree in co-relation 96536. Up to 59025 conditions per place. [2024-11-22 21:46:06,446 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 49 selfloop transitions, 2 changer transitions 29/85 dead transitions. [2024-11-22 21:46:06,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 85 transitions, 419 flow [2024-11-22 21:46:06,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:46:06,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:46:06,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-11-22 21:46:06,447 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47761194029850745 [2024-11-22 21:46:06,447 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 191 flow. Second operand 4 states and 128 transitions. [2024-11-22 21:46:06,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 85 transitions, 419 flow [2024-11-22 21:46:06,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 85 transitions, 410 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-22 21:46:06,453 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 185 flow [2024-11-22 21:46:06,453 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2024-11-22 21:46:06,454 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 1 predicate places. [2024-11-22 21:46:06,454 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 185 flow [2024-11-22 21:46:06,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:46:06,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:46:06,454 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:46:06,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 21:46:06,455 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-22 21:46:06,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:46:06,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1814635019, now seen corresponding path program 2 times [2024-11-22 21:46:06,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:46:06,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752365605] [2024-11-22 21:46:06,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:46:06,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:46:06,475 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:46:06,476 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:46:06,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 21:46:06,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:46:06,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752365605] [2024-11-22 21:46:06,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752365605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:46:06,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:46:06,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:46:06,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190583197] [2024-11-22 21:46:06,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:46:06,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:46:06,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:46:06,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:46:06,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:46:06,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 67 [2024-11-22 21:46:06,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-11-22 21:46:06,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:46:06,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 67 [2024-11-22 21:46:06,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:46:09,185 INFO L124 PetriNetUnfolderBase]: 37613/49370 cut-off events. [2024-11-22 21:46:09,186 INFO L125 PetriNetUnfolderBase]: For 7811/7811 co-relation queries the response was YES. [2024-11-22 21:46:09,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109001 conditions, 49370 events. 37613/49370 cut-off events. For 7811/7811 co-relation queries the response was YES. Maximal size of possible extension queue 1900. Compared 274892 event pairs, 32760 based on Foata normal form. 0/40129 useless extension candidates. Maximal degree in co-relation 108979. Up to 49251 conditions per place. [2024-11-22 21:46:09,440 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 45 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-22 21:46:09,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 53 transitions, 269 flow [2024-11-22 21:46:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:46:09,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:46:09,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-22 21:46:09,441 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34701492537313433 [2024-11-22 21:46:09,441 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 185 flow. Second operand 4 states and 93 transitions. [2024-11-22 21:46:09,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 53 transitions, 269 flow [2024-11-22 21:46:09,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 53 transitions, 261 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-22 21:46:09,474 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 171 flow [2024-11-22 21:46:09,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=171, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2024-11-22 21:46:09,475 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -2 predicate places. [2024-11-22 21:46:09,475 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 171 flow [2024-11-22 21:46:09,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-11-22 21:46:09,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:46:09,475 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:46:09,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:46:09,475 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-22 21:46:09,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:46:09,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1056758151, now seen corresponding path program 1 times [2024-11-22 21:46:09,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:46:09,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193945099] [2024-11-22 21:46:09,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:46:09,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:46:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:46:09,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:46:09,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:46:09,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193945099] [2024-11-22 21:46:09,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193945099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:46:09,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458331340] [2024-11-22 21:46:09,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:46:09,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:46:09,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:46:09,547 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) [2024-11-22 21:46:09,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:46:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:46:09,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 21:46:09,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:46:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:46:09,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:46:09,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:46:09,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458331340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:46:09,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:46:09,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2024-11-22 21:46:09,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598185294] [2024-11-22 21:46:09,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:46:09,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:46:09,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:46:09,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:46:09,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-22 21:46:09,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 67 [2024-11-22 21:46:09,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 171 flow. Second operand has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 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) [2024-11-22 21:46:09,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:46:09,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 67 [2024-11-22 21:46:09,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:46:12,012 INFO L124 PetriNetUnfolderBase]: 29978/39446 cut-off events. [2024-11-22 21:46:12,013 INFO L125 PetriNetUnfolderBase]: For 7524/7524 co-relation queries the response was YES. [2024-11-22 21:46:12,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87131 conditions, 39446 events. 29978/39446 cut-off events. For 7524/7524 co-relation queries the response was YES. Maximal size of possible extension queue 1422. Compared 213530 event pairs, 26084 based on Foata normal form. 611/33121 useless extension candidates. Maximal degree in co-relation 74626. Up to 33163 conditions per place. [2024-11-22 21:46:12,186 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 66 selfloop transitions, 7 changer transitions 4/82 dead transitions. [2024-11-22 21:46:12,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 393 flow [2024-11-22 21:46:12,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:46:12,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:46:12,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-11-22 21:46:12,188 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35181236673773986 [2024-11-22 21:46:12,188 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 171 flow. Second operand 7 states and 165 transitions. [2024-11-22 21:46:12,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 393 flow [2024-11-22 21:46:12,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 82 transitions, 385 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-22 21:46:12,198 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 186 flow [2024-11-22 21:46:12,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=186, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2024-11-22 21:46:12,199 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-11-22 21:46:12,199 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 186 flow [2024-11-22 21:46:12,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 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) [2024-11-22 21:46:12,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:46:12,199 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:46:12,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 21:46:12,399 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,SelfDestructingSolverStorable7 [2024-11-22 21:46:12,400 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-22 21:46:12,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:46:12,400 INFO L85 PathProgramCache]: Analyzing trace with hash 653474308, now seen corresponding path program 2 times [2024-11-22 21:46:12,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:46:12,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158655068] [2024-11-22 21:46:12,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:46:12,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:46:12,419 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:46:12,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:46:12,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 21:46:12,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:46:12,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158655068] [2024-11-22 21:46:12,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158655068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:46:12,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:46:12,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:46:12,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884776875] [2024-11-22 21:46:12,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:46:12,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:46:12,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:46:12,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:46:12,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:46:12,557 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 67 [2024-11-22 21:46:12,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:46:12,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:46:12,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 67 [2024-11-22 21:46:12,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:46:14,070 INFO L124 PetriNetUnfolderBase]: 24355/32134 cut-off events. [2024-11-22 21:46:14,070 INFO L125 PetriNetUnfolderBase]: For 4859/4859 co-relation queries the response was YES. [2024-11-22 21:46:14,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69541 conditions, 32134 events. 24355/32134 cut-off events. For 4859/4859 co-relation queries the response was YES. Maximal size of possible extension queue 1160. Compared 171067 event pairs, 21124 based on Foata normal form. 0/27481 useless extension candidates. Maximal degree in co-relation 57030. Up to 32015 conditions per place. [2024-11-22 21:46:14,189 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 43 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2024-11-22 21:46:14,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 51 transitions, 266 flow [2024-11-22 21:46:14,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:46:14,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:46:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-22 21:46:14,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33955223880597013 [2024-11-22 21:46:14,190 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 186 flow. Second operand 4 states and 91 transitions. [2024-11-22 21:46:14,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 51 transitions, 266 flow [2024-11-22 21:46:14,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 51 transitions, 250 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-22 21:46:14,197 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 164 flow [2024-11-22 21:46:14,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2024-11-22 21:46:14,197 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -2 predicate places. [2024-11-22 21:46:14,198 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 164 flow [2024-11-22 21:46:14,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:46:14,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:46:14,198 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:46:14,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 21:46:14,198 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-22 21:46:14,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:46:14,198 INFO L85 PathProgramCache]: Analyzing trace with hash -190697098, now seen corresponding path program 1 times [2024-11-22 21:46:14,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:46:14,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692480267] [2024-11-22 21:46:14,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:46:14,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:46:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:46:14,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:46:14,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:46:14,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692480267] [2024-11-22 21:46:14,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692480267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:46:14,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:46:14,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:46:14,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268429886] [2024-11-22 21:46:14,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:46:14,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:46:14,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:46:14,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:46:14,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:46:14,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 67 [2024-11-22 21:46:14,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-22 21:46:14,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:46:14,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 67 [2024-11-22 21:46:14,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand