./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f 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/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:32:31,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:32:31,318 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:32:31,328 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:32:31,329 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:32:31,349 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:32:31,354 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:32:31,354 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:32:31,355 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:32:31,355 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:32:31,355 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:32:31,355 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:32:31,356 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:32:31,356 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:32:31,356 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:32:31,357 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:32:31,357 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:32:31,357 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:32:31,358 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:32:31,358 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:32:31,358 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:32:31,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:32:31,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:32:31,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:32:31,373 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:32:31,373 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:32:31,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:32:31,373 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:32:31,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:32:31,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:32:31,375 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:32:31,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:32:31,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:32:31,375 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:32:31,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:32:31,376 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:32:31,376 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:32:31,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:32:31,376 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:32:31,377 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:32:31,377 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:32:31,377 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:32:31,377 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:32:31,378 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 [2024-01-27 15:32:31,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:32:31,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:32:31,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:32:31,640 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:32:31,641 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:32:31,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2024-01-27 15:32:32,701 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:32:32,912 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:32:32,913 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2024-01-27 15:32:32,923 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87ab97bc0/07b476719e3e43ef95d5928a28b67789/FLAG154c2d64e [2024-01-27 15:32:32,937 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87ab97bc0/07b476719e3e43ef95d5928a28b67789 [2024-01-27 15:32:32,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:32:32,941 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:32:32,944 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:32:32,944 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:32:32,947 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:32:32,948 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:32:32" (1/1) ... [2024-01-27 15:32:32,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23fda16d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:32, skipping insertion in model container [2024-01-27 15:32:32,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:32:32" (1/1) ... [2024-01-27 15:32:32,976 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:32:33,152 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c[3694,3707] [2024-01-27 15:32:33,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:32:33,186 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:32:33,203 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c[3694,3707] [2024-01-27 15:32:33,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:32:33,236 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:32:33,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:33 WrapperNode [2024-01-27 15:32:33,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:32:33,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:32:33,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:32:33,237 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:32:33,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:33" (1/1) ... [2024-01-27 15:32:33,248 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:33" (1/1) ... [2024-01-27 15:32:33,272 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 315 [2024-01-27 15:32:33,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:32:33,274 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:32:33,274 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:32:33,280 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:32:33,288 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:33" (1/1) ... [2024-01-27 15:32:33,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:33" (1/1) ... [2024-01-27 15:32:33,291 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:33" (1/1) ... [2024-01-27 15:32:33,309 INFO L175 MemorySlicer]: Split 15 memory accesses to 6 slices as follows [2, 2, 2, 5, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 5 writes are split as follows [0, 1, 1, 1, 1, 1]. [2024-01-27 15:32:33,309 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:33" (1/1) ... [2024-01-27 15:32:33,310 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:33" (1/1) ... [2024-01-27 15:32:33,316 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:33" (1/1) ... [2024-01-27 15:32:33,319 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:33" (1/1) ... [2024-01-27 15:32:33,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:33" (1/1) ... [2024-01-27 15:32:33,322 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:33" (1/1) ... [2024-01-27 15:32:33,325 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:32:33,325 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:32:33,325 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:32:33,326 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:32:33,326 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:33" (1/1) ... [2024-01-27 15:32:33,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:32:33,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:32:33,350 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) [2024-01-27 15:32:33,369 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 [2024-01-27 15:32:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:32:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:32:33,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:32:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:32:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:32:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:32:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:32:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-27 15:32:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:32:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:32:33,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:32:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:32:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:32:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-27 15:32:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:32:33,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:32:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:32:33,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:32:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:32:33,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:32:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-27 15:32:33,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-27 15:32:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:32:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:32:33,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:32:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:32:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:32:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-27 15:32:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:32:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:32:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:32:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:32:33,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:32:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:32:33,401 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:32:33,491 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:32:33,493 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:32:33,821 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:32:33,821 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:32:34,085 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:32:34,085 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-01-27 15:32:34,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:32:34 BoogieIcfgContainer [2024-01-27 15:32:34,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:32:34,087 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:32:34,087 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:32:34,090 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:32:34,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:32:32" (1/3) ... [2024-01-27 15:32:34,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49667674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:32:34, skipping insertion in model container [2024-01-27 15:32:34,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:32:33" (2/3) ... [2024-01-27 15:32:34,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49667674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:32:34, skipping insertion in model container [2024-01-27 15:32:34,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:32:34" (3/3) ... [2024-01-27 15:32:34,093 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2024-01-27 15:32:34,099 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:32:34,106 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:32:34,106 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:32:34,106 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:32:34,159 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-27 15:32:34,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 57 transitions, 142 flow [2024-01-27 15:32:34,223 INFO L124 PetriNetUnfolderBase]: 9/53 cut-off events. [2024-01-27 15:32:34,223 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:32:34,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 53 events. 9/53 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-01-27 15:32:34,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 57 transitions, 142 flow [2024-01-27 15:32:34,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 52 transitions, 128 flow [2024-01-27 15:32:34,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:32:34,247 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@1a098862, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:32:34,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-27 15:32:34,265 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:32:34,266 INFO L124 PetriNetUnfolderBase]: 9/51 cut-off events. [2024-01-27 15:32:34,266 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:32:34,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:32:34,267 INFO L208 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] [2024-01-27 15:32:34,267 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:32:34,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:32:34,271 INFO L85 PathProgramCache]: Analyzing trace with hash 891167991, now seen corresponding path program 1 times [2024-01-27 15:32:34,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:32:34,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405271561] [2024-01-27 15:32:34,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:32:34,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:32:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:32:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:32:34,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:32:34,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405271561] [2024-01-27 15:32:34,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405271561] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:32:34,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:32:34,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:32:34,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984616247] [2024-01-27 15:32:34,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:32:34,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-27 15:32:34,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:32:34,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-27 15:32:34,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-27 15:32:34,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-01-27 15:32:34,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 128 flow. Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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) [2024-01-27 15:32:34,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:32:34,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-01-27 15:32:34,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:32:35,854 INFO L124 PetriNetUnfolderBase]: 13641/18118 cut-off events. [2024-01-27 15:32:35,854 INFO L125 PetriNetUnfolderBase]: For 784/784 co-relation queries the response was YES. [2024-01-27 15:32:35,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36067 conditions, 18118 events. 13641/18118 cut-off events. For 784/784 co-relation queries the response was YES. Maximal size of possible extension queue 1015. Compared 99797 event pairs, 9349 based on Foata normal form. 4121/17688 useless extension candidates. Maximal degree in co-relation 31367. Up to 17167 conditions per place. [2024-01-27 15:32:35,953 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 39 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2024-01-27 15:32:35,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 48 transitions, 198 flow [2024-01-27 15:32:35,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-27 15:32:35,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-27 15:32:35,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 69 transitions. [2024-01-27 15:32:35,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-01-27 15:32:35,965 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 128 flow. Second operand 2 states and 69 transitions. [2024-01-27 15:32:35,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 48 transitions, 198 flow [2024-01-27 15:32:35,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 182 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-27 15:32:35,998 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 104 flow [2024-01-27 15:32:35,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2024-01-27 15:32:36,002 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2024-01-27 15:32:36,002 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 104 flow [2024-01-27 15:32:36,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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) [2024-01-27 15:32:36,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:32:36,003 INFO L208 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, 1] [2024-01-27 15:32:36,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:32:36,004 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:32:36,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:32:36,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1061580763, now seen corresponding path program 1 times [2024-01-27 15:32:36,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:32:36,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373077138] [2024-01-27 15:32:36,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:32:36,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:32:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:32:36,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:32:36,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:32:36,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373077138] [2024-01-27 15:32:36,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373077138] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:32:36,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:32:36,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:32:36,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506076344] [2024-01-27 15:32:36,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:32:36,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:32:36,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:32:36,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:32:36,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:32:36,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-01-27 15:32:36,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 104 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) [2024-01-27 15:32:36,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:32:36,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-01-27 15:32:36,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:32:37,695 INFO L124 PetriNetUnfolderBase]: 20246/27668 cut-off events. [2024-01-27 15:32:37,695 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2024-01-27 15:32:37,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53819 conditions, 27668 events. 20246/27668 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 1634. Compared 175937 event pairs, 4800 based on Foata normal form. 1/21636 useless extension candidates. Maximal degree in co-relation 53816. Up to 19114 conditions per place. [2024-01-27 15:32:37,833 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 67 selfloop transitions, 5 changer transitions 1/82 dead transitions. [2024-01-27 15:32:37,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 82 transitions, 325 flow [2024-01-27 15:32:37,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:32:37,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:32:37,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-01-27 15:32:37,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6608187134502924 [2024-01-27 15:32:37,840 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 104 flow. Second operand 3 states and 113 transitions. [2024-01-27 15:32:37,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 82 transitions, 325 flow [2024-01-27 15:32:37,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 82 transitions, 325 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 15:32:37,844 INFO L231 Difference]: Finished difference. Result has 52 places, 52 transitions, 137 flow [2024-01-27 15:32:37,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=52, PETRI_TRANSITIONS=52} [2024-01-27 15:32:37,845 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2024-01-27 15:32:37,849 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 52 transitions, 137 flow [2024-01-27 15:32:37,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-01-27 15:32:37,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:32:37,849 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1] [2024-01-27 15:32:37,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:32:37,850 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:32:37,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:32:37,850 INFO L85 PathProgramCache]: Analyzing trace with hash 41150719, now seen corresponding path program 1 times [2024-01-27 15:32:37,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:32:37,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183873926] [2024-01-27 15:32:37,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:32:37,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:32:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:32:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:32:38,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:32:38,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183873926] [2024-01-27 15:32:38,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183873926] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:32:38,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:32:38,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:32:38,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594682854] [2024-01-27 15:32:38,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:32:38,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:32:38,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:32:38,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:32:38,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:32:38,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-01-27 15:32:38,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 52 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-01-27 15:32:38,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:32:38,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-01-27 15:32:38,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:32:40,332 INFO L124 PetriNetUnfolderBase]: 28465/38461 cut-off events. [2024-01-27 15:32:40,333 INFO L125 PetriNetUnfolderBase]: For 2719/2719 co-relation queries the response was YES. [2024-01-27 15:32:40,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82164 conditions, 38461 events. 28465/38461 cut-off events. For 2719/2719 co-relation queries the response was YES. Maximal size of possible extension queue 2280. Compared 249955 event pairs, 21088 based on Foata normal form. 1259/30979 useless extension candidates. Maximal degree in co-relation 82159. Up to 25263 conditions per place. [2024-01-27 15:32:40,447 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 42 selfloop transitions, 2 changer transitions 34/87 dead transitions. [2024-01-27 15:32:40,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 87 transitions, 384 flow [2024-01-27 15:32:40,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:32:40,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:32:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-01-27 15:32:40,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2024-01-27 15:32:40,448 INFO L175 Difference]: Start difference. First operand has 52 places, 52 transitions, 137 flow. Second operand 4 states and 127 transitions. [2024-01-27 15:32:40,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 87 transitions, 384 flow [2024-01-27 15:32:40,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 87 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:32:40,451 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 150 flow [2024-01-27 15:32:40,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2024-01-27 15:32:40,452 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-01-27 15:32:40,452 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 150 flow [2024-01-27 15:32:40,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-01-27 15:32:40,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:32:40,452 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1] [2024-01-27 15:32:40,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:32:40,453 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:32:40,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:32:40,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1624964549, now seen corresponding path program 1 times [2024-01-27 15:32:40,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:32:40,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895636962] [2024-01-27 15:32:40,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:32:40,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:32:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:32:40,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:32:40,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:32:40,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895636962] [2024-01-27 15:32:40,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895636962] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:32:40,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246719901] [2024-01-27 15:32:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:32:40,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:32:40,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:32:40,560 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) [2024-01-27 15:32:40,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-27 15:32:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:32:40,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-27 15:32:40,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:32:40,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:32:40,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:32:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:32:40,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246719901] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:32:40,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:32:40,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-01-27 15:32:40,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483222737] [2024-01-27 15:32:40,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:32:40,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:32:40,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:32:40,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:32:40,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:32:40,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-01-27 15:32:40,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 150 flow. Second operand has 10 states, 10 states have (on average 17.3) internal successors, (173), 10 states have internal predecessors, (173), 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) [2024-01-27 15:32:40,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:32:40,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-01-27 15:32:40,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:32:43,051 INFO L124 PetriNetUnfolderBase]: 28465/38464 cut-off events. [2024-01-27 15:32:43,051 INFO L125 PetriNetUnfolderBase]: For 5660/5660 co-relation queries the response was YES. [2024-01-27 15:32:43,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82131 conditions, 38464 events. 28465/38464 cut-off events. For 5660/5660 co-relation queries the response was YES. Maximal size of possible extension queue 2280. Compared 249449 event pairs, 21088 based on Foata normal form. 1258/30981 useless extension candidates. Maximal degree in co-relation 82124. Up to 25262 conditions per place. [2024-01-27 15:32:43,262 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 73 selfloop transitions, 5 changer transitions 2/89 dead transitions. [2024-01-27 15:32:43,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 89 transitions, 408 flow [2024-01-27 15:32:43,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:32:43,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:32:43,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-01-27 15:32:43,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2024-01-27 15:32:43,277 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 150 flow. Second operand 6 states and 154 transitions. [2024-01-27 15:32:43,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 89 transitions, 408 flow [2024-01-27 15:32:43,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 89 transitions, 400 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-27 15:32:43,282 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 185 flow [2024-01-27 15:32:43,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-01-27 15:32:43,283 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2024-01-27 15:32:43,283 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 185 flow [2024-01-27 15:32:43,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.3) internal successors, (173), 10 states have internal predecessors, (173), 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) [2024-01-27 15:32:43,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:32:43,284 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1] [2024-01-27 15:32:43,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-27 15:32:43,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:32:43,495 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:32:43,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:32:43,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1832101309, now seen corresponding path program 1 times [2024-01-27 15:32:43,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:32:43,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591982281] [2024-01-27 15:32:43,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:32:43,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:32:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:32:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:32:43,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:32:43,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591982281] [2024-01-27 15:32:43,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591982281] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:32:43,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774411616] [2024-01-27 15:32:43,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:32:43,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:32:43,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:32:43,672 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) [2024-01-27 15:32:43,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-27 15:32:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:32:43,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 15:32:43,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:32:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:32:44,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:32:44,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:32:44,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774411616] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:32:44,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:32:44,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-01-27 15:32:44,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20038046] [2024-01-27 15:32:44,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:32:44,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:32:44,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:32:44,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:32:44,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-01-27 15:32:44,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-01-27 15:32:44,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 185 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:32:44,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:32:44,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-01-27 15:32:44,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:32:48,663 INFO L124 PetriNetUnfolderBase]: 57808/77920 cut-off events. [2024-01-27 15:32:48,664 INFO L125 PetriNetUnfolderBase]: For 16000/16000 co-relation queries the response was YES. [2024-01-27 15:32:48,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171508 conditions, 77920 events. 57808/77920 cut-off events. For 16000/16000 co-relation queries the response was YES. Maximal size of possible extension queue 3722. Compared 530598 event pairs, 4694 based on Foata normal form. 373/61096 useless extension candidates. Maximal degree in co-relation 171499. Up to 20569 conditions per place. [2024-01-27 15:32:48,987 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 168 selfloop transitions, 22 changer transitions 44/243 dead transitions. [2024-01-27 15:32:48,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 243 transitions, 1149 flow [2024-01-27 15:32:48,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:32:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:32:48,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 368 transitions. [2024-01-27 15:32:48,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5869218500797448 [2024-01-27 15:32:49,013 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 185 flow. Second operand 11 states and 368 transitions. [2024-01-27 15:32:49,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 243 transitions, 1149 flow [2024-01-27 15:32:49,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 243 transitions, 1113 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-01-27 15:32:49,026 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 298 flow [2024-01-27 15:32:49,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=298, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2024-01-27 15:32:49,042 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-01-27 15:32:49,042 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 298 flow [2024-01-27 15:32:49,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:32:49,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:32:49,043 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 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] [2024-01-27 15:32:49,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-27 15:32:49,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:32:49,254 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:32:49,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:32:49,255 INFO L85 PathProgramCache]: Analyzing trace with hash 174290093, now seen corresponding path program 2 times [2024-01-27 15:32:49,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:32:49,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005404241] [2024-01-27 15:32:49,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:32:49,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:32:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:32:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 15:32:49,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:32:49,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005404241] [2024-01-27 15:32:49,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005404241] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:32:49,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:32:49,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:32:49,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49054782] [2024-01-27 15:32:49,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:32:49,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:32:49,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:32:49,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:32:49,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:32:49,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-01-27 15:32:49,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 298 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:32:49,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:32:49,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-01-27 15:32:49,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:32:56,999 INFO L124 PetriNetUnfolderBase]: 94033/125482 cut-off events. [2024-01-27 15:32:57,000 INFO L125 PetriNetUnfolderBase]: For 83845/83845 co-relation queries the response was YES. [2024-01-27 15:32:57,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307952 conditions, 125482 events. 94033/125482 cut-off events. For 83845/83845 co-relation queries the response was YES. Maximal size of possible extension queue 5843. Compared 879050 event pairs, 16581 based on Foata normal form. 2/97557 useless extension candidates. Maximal degree in co-relation 307939. Up to 59916 conditions per place. [2024-01-27 15:32:57,651 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 148 selfloop transitions, 21 changer transitions 2/180 dead transitions. [2024-01-27 15:32:57,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 180 transitions, 999 flow [2024-01-27 15:32:57,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:32:57,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:32:57,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2024-01-27 15:32:57,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2024-01-27 15:32:57,653 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 298 flow. Second operand 5 states and 205 transitions. [2024-01-27 15:32:57,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 180 transitions, 999 flow [2024-01-27 15:32:58,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 180 transitions, 938 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-01-27 15:32:58,514 INFO L231 Difference]: Finished difference. Result has 74 places, 82 transitions, 435 flow [2024-01-27 15:32:58,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=435, PETRI_PLACES=74, PETRI_TRANSITIONS=82} [2024-01-27 15:32:58,515 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2024-01-27 15:32:58,515 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 82 transitions, 435 flow [2024-01-27 15:32:58,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:32:58,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:32:58,516 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-01-27 15:32:58,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:32:58,516 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:32:58,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:32:58,516 INFO L85 PathProgramCache]: Analyzing trace with hash 25049595, now seen corresponding path program 1 times [2024-01-27 15:32:58,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:32:58,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304927528] [2024-01-27 15:32:58,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:32:58,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:32:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:32:59,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:32:59,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:32:59,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304927528] [2024-01-27 15:32:59,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304927528] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:32:59,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924345383] [2024-01-27 15:32:59,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:32:59,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:32:59,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:32:59,432 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:32:59,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-27 15:32:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:32:59,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 29 conjunts are in the unsatisfiable core [2024-01-27 15:32:59,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:32:59,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-01-27 15:32:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:32:59,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:33:00,248 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 15:33:00,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924345383] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:33:00,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:33:00,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 23 [2024-01-27 15:33:00,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075938606] [2024-01-27 15:33:00,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:33:00,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-01-27 15:33:00,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:33:00,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-01-27 15:33:00,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2024-01-27 15:33:00,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-01-27 15:33:00,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 82 transitions, 435 flow. Second operand has 23 states, 23 states have (on average 17.391304347826086) internal successors, (400), 23 states have internal predecessors, (400), 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) [2024-01-27 15:33:00,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:33:00,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-01-27 15:33:00,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:33:14,345 INFO L124 PetriNetUnfolderBase]: 144876/193645 cut-off events. [2024-01-27 15:33:14,345 INFO L125 PetriNetUnfolderBase]: For 195600/195600 co-relation queries the response was YES. [2024-01-27 15:33:14,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502719 conditions, 193645 events. 144876/193645 cut-off events. For 195600/195600 co-relation queries the response was YES. Maximal size of possible extension queue 9291. Compared 1427360 event pairs, 13895 based on Foata normal form. 4/153948 useless extension candidates. Maximal degree in co-relation 502705. Up to 124383 conditions per place.