./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-time-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/chl-time-subst.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 55dce27fdc9c44ff408174badf0a943270d2adadc96357bb37463f058a6a7cee --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:41:33,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:41:33,559 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:41:33,564 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:41:33,565 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:41:33,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:41:33,588 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:41:33,588 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:41:33,588 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:41:33,592 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:41:33,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:41:33,592 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:41:33,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:41:33,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:41:33,594 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:41:33,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:41:33,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:41:33,594 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:41:33,594 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:41:33,595 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:41:33,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:41:33,595 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:41:33,595 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:41:33,596 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:41:33,596 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:41:33,596 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:41:33,596 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:41:33,596 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:41:33,597 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:41:33,597 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:41:33,598 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:41:33,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:41:33,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:41:33,598 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:41:33,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:41:33,599 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:41:33,599 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:41:33,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:41:33,599 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:41:33,605 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:41:33,605 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:41:33,605 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:41:33,605 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:41:33,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55dce27fdc9c44ff408174badf0a943270d2adadc96357bb37463f058a6a7cee [2024-06-27 16:41:33,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:41:33,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:41:33,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:41:33,849 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:41:33,850 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:41:33,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-time-subst.wvr.c [2024-06-27 16:41:34,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:41:35,046 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:41:35,046 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-subst.wvr.c [2024-06-27 16:41:35,054 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/017b47843/801528bce17146649a33c1f495cd11a4/FLAG02db32cac [2024-06-27 16:41:35,068 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/017b47843/801528bce17146649a33c1f495cd11a4 [2024-06-27 16:41:35,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:41:35,073 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:41:35,075 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:41:35,083 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:41:35,087 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:41:35,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:41:35" (1/1) ... [2024-06-27 16:41:35,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d4691e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:41:35, skipping insertion in model container [2024-06-27 16:41:35,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:41:35" (1/1) ... [2024-06-27 16:41:35,123 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:41:35,398 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-subst.wvr.c[2918,2931] [2024-06-27 16:41:35,418 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:41:35,432 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:41:35,491 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-subst.wvr.c[2918,2931] [2024-06-27 16:41:35,496 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:41:35,527 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:41:35,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:41:35 WrapperNode [2024-06-27 16:41:35,527 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:41:35,529 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:41:35,529 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:41:35,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:41:35,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:41:35" (1/1) ... [2024-06-27 16:41:35,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:41:35" (1/1) ... [2024-06-27 16:41:35,595 INFO L138 Inliner]: procedures = 22, calls = 24, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 207 [2024-06-27 16:41:35,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:41:35,599 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:41:35,599 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:41:35,599 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:41:35,617 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:41:35" (1/1) ... [2024-06-27 16:41:35,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:41:35" (1/1) ... [2024-06-27 16:41:35,628 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:41:35" (1/1) ... [2024-06-27 16:41:35,649 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 16:41:35,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:41:35" (1/1) ... [2024-06-27 16:41:35,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:41:35" (1/1) ... [2024-06-27 16:41:35,665 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:41:35" (1/1) ... [2024-06-27 16:41:35,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:41:35" (1/1) ... [2024-06-27 16:41:35,667 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:41:35" (1/1) ... [2024-06-27 16:41:35,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:41:35" (1/1) ... [2024-06-27 16:41:35,670 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:41:35,684 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:41:35,685 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:41:35,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:41:35,686 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:41:35" (1/1) ... [2024-06-27 16:41:35,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:41:35,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:41:35,725 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) [2024-06-27 16:41:35,728 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 [2024-06-27 16:41:35,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:41:35,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:41:35,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:41:35,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:41:35,802 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:41:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 16:41:35,802 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 16:41:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:41:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 16:41:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 16:41:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:41:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:41:35,806 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:41:35,880 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:41:35,882 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:41:36,147 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:41:36,148 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:41:36,421 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:41:36,421 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 16:41:36,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:41:36 BoogieIcfgContainer [2024-06-27 16:41:36,422 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:41:36,424 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:41:36,424 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:41:36,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:41:36,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:41:35" (1/3) ... [2024-06-27 16:41:36,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f3fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:41:36, skipping insertion in model container [2024-06-27 16:41:36,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:41:35" (2/3) ... [2024-06-27 16:41:36,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f3fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:41:36, skipping insertion in model container [2024-06-27 16:41:36,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:41:36" (3/3) ... [2024-06-27 16:41:36,431 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-time-subst.wvr.c [2024-06-27 16:41:36,438 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:41:36,445 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:41:36,445 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:41:36,446 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:41:36,492 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-27 16:41:36,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 25 transitions, 71 flow [2024-06-27 16:41:36,541 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2024-06-27 16:41:36,544 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:41:36,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 22 events. 0/22 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-27 16:41:36,545 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 25 transitions, 71 flow [2024-06-27 16:41:36,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 21 transitions, 60 flow [2024-06-27 16:41:36,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:41:36,569 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;@4c8ffd30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:41:36,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 16:41:36,576 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:41:36,579 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2024-06-27 16:41:36,579 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:41:36,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:41:36,580 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] [2024-06-27 16:41:36,580 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 1 more)] === [2024-06-27 16:41:36,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:41:36,584 INFO L85 PathProgramCache]: Analyzing trace with hash -538905494, now seen corresponding path program 1 times [2024-06-27 16:41:36,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:41:36,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112009907] [2024-06-27 16:41:36,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:41:36,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:41:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:41:37,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:41:37,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:41:37,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112009907] [2024-06-27 16:41:37,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112009907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:41:37,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:41:37,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:41:37,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436067415] [2024-06-27 16:41:37,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:41:37,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:41:37,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:41:37,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:41:37,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:41:38,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-27 16:41:38,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2024-06-27 16:41:38,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:41:38,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-27 16:41:38,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:41:38,310 INFO L124 PetriNetUnfolderBase]: 178/337 cut-off events. [2024-06-27 16:41:38,310 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-06-27 16:41:38,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 337 events. 178/337 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1319 event pairs, 46 based on Foata normal form. 1/335 useless extension candidates. Maximal degree in co-relation 575. Up to 110 conditions per place. [2024-06-27 16:41:38,315 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 30 selfloop transitions, 2 changer transitions 8/44 dead transitions. [2024-06-27 16:41:38,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 210 flow [2024-06-27 16:41:38,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:41:38,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:41:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-06-27 16:41:38,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.608 [2024-06-27 16:41:38,325 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 60 flow. Second operand 5 states and 76 transitions. [2024-06-27 16:41:38,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 210 flow [2024-06-27 16:41:38,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 182 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 16:41:38,330 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 63 flow [2024-06-27 16:41:38,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=63, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2024-06-27 16:41:38,333 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-27 16:41:38,333 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 63 flow [2024-06-27 16:41:38,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2024-06-27 16:41:38,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:41:38,334 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] [2024-06-27 16:41:38,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:41:38,334 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 1 more)] === [2024-06-27 16:41:38,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:41:38,335 INFO L85 PathProgramCache]: Analyzing trace with hash 436774206, now seen corresponding path program 2 times [2024-06-27 16:41:38,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:41:38,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801248171] [2024-06-27 16:41:38,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:41:38,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:41:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:41:39,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:41:39,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:41:39,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801248171] [2024-06-27 16:41:39,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801248171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:41:39,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:41:39,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:41:39,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92402277] [2024-06-27 16:41:39,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:41:39,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:41:39,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:41:39,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:41:39,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:41:39,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-27 16:41:39,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 63 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2024-06-27 16:41:39,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:41:39,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-27 16:41:39,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:41:39,299 INFO L124 PetriNetUnfolderBase]: 194/367 cut-off events. [2024-06-27 16:41:39,299 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2024-06-27 16:41:39,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 367 events. 194/367 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1578 event pairs, 24 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 839. Up to 151 conditions per place. [2024-06-27 16:41:39,302 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 32 selfloop transitions, 2 changer transitions 12/50 dead transitions. [2024-06-27 16:41:39,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 234 flow [2024-06-27 16:41:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:41:39,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:41:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-27 16:41:39,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-06-27 16:41:39,303 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 63 flow. Second operand 5 states and 80 transitions. [2024-06-27 16:41:39,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 234 flow [2024-06-27 16:41:39,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 50 transitions, 227 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 16:41:39,305 INFO L231 Difference]: Finished difference. Result has 36 places, 22 transitions, 73 flow [2024-06-27 16:41:39,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=73, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2024-06-27 16:41:39,306 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-06-27 16:41:39,306 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 73 flow [2024-06-27 16:41:39,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2024-06-27 16:41:39,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:41:39,307 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] [2024-06-27 16:41:39,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:41:39,307 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 1 more)] === [2024-06-27 16:41:39,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:41:39,307 INFO L85 PathProgramCache]: Analyzing trace with hash 921231556, now seen corresponding path program 3 times [2024-06-27 16:41:39,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:41:39,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615263371] [2024-06-27 16:41:39,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:41:39,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:41:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:41:39,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:41:39,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:41:39,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615263371] [2024-06-27 16:41:39,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615263371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:41:39,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:41:39,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:41:39,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141020933] [2024-06-27 16:41:39,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:41:39,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:41:39,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:41:39,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:41:39,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:41:39,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-27 16:41:39,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2024-06-27 16:41:39,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:41:39,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-27 16:41:39,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:41:40,017 INFO L124 PetriNetUnfolderBase]: 153/301 cut-off events. [2024-06-27 16:41:40,017 INFO L125 PetriNetUnfolderBase]: For 315/315 co-relation queries the response was YES. [2024-06-27 16:41:40,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 301 events. 153/301 cut-off events. For 315/315 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1141 event pairs, 35 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 745. Up to 109 conditions per place. [2024-06-27 16:41:40,020 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 31 selfloop transitions, 3 changer transitions 8/46 dead transitions. [2024-06-27 16:41:40,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 229 flow [2024-06-27 16:41:40,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:41:40,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:41:40,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-06-27 16:41:40,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.616 [2024-06-27 16:41:40,021 INFO L175 Difference]: Start difference. First operand has 36 places, 22 transitions, 73 flow. Second operand 5 states and 77 transitions. [2024-06-27 16:41:40,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 229 flow [2024-06-27 16:41:40,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 210 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 16:41:40,023 INFO L231 Difference]: Finished difference. Result has 38 places, 23 transitions, 84 flow [2024-06-27 16:41:40,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=84, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2024-06-27 16:41:40,024 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-27 16:41:40,024 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 84 flow [2024-06-27 16:41:40,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2024-06-27 16:41:40,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:41:40,025 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] [2024-06-27 16:41:40,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:41:40,025 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 1 more)] === [2024-06-27 16:41:40,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:41:40,026 INFO L85 PathProgramCache]: Analyzing trace with hash -534392932, now seen corresponding path program 4 times [2024-06-27 16:41:40,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:41:40,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047137277] [2024-06-27 16:41:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:41:40,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:41:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:41:40,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:41:40,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:41:40,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047137277] [2024-06-27 16:41:40,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047137277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:41:40,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:41:40,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:41:40,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413933466] [2024-06-27 16:41:40,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:41:40,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:41:40,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:41:40,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:41:40,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:41:40,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-27 16:41:40,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2024-06-27 16:41:40,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:41:40,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-27 16:41:40,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:41:40,795 INFO L124 PetriNetUnfolderBase]: 160/316 cut-off events. [2024-06-27 16:41:40,795 INFO L125 PetriNetUnfolderBase]: For 356/356 co-relation queries the response was YES. [2024-06-27 16:41:40,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 856 conditions, 316 events. 160/316 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1287 event pairs, 28 based on Foata normal form. 1/316 useless extension candidates. Maximal degree in co-relation 840. Up to 137 conditions per place. [2024-06-27 16:41:40,797 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 30 selfloop transitions, 2 changer transitions 12/48 dead transitions. [2024-06-27 16:41:40,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 251 flow [2024-06-27 16:41:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:41:40,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:41:40,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-27 16:41:40,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624 [2024-06-27 16:41:40,798 INFO L175 Difference]: Start difference. First operand has 38 places, 23 transitions, 84 flow. Second operand 5 states and 78 transitions. [2024-06-27 16:41:40,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 251 flow [2024-06-27 16:41:40,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 244 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 16:41:40,800 INFO L231 Difference]: Finished difference. Result has 42 places, 23 transitions, 93 flow [2024-06-27 16:41:40,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2024-06-27 16:41:40,801 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-06-27 16:41:40,801 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 93 flow [2024-06-27 16:41:40,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2024-06-27 16:41:40,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:41:40,802 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] [2024-06-27 16:41:40,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:41:40,802 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 1 more)] === [2024-06-27 16:41:40,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:41:40,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1865595054, now seen corresponding path program 5 times [2024-06-27 16:41:40,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:41:40,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762739661] [2024-06-27 16:41:40,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:41:40,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:41:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:41:41,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:41:41,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:41:41,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762739661] [2024-06-27 16:41:41,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762739661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:41:41,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:41:41,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:41:41,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404687950] [2024-06-27 16:41:41,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:41:41,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:41:41,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:41:41,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:41:41,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:41:41,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-27 16:41:41,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2024-06-27 16:41:41,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:41:41,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-27 16:41:41,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:41:41,508 INFO L124 PetriNetUnfolderBase]: 111/226 cut-off events. [2024-06-27 16:41:41,509 INFO L125 PetriNetUnfolderBase]: For 432/432 co-relation queries the response was YES. [2024-06-27 16:41:41,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 226 events. 111/226 cut-off events. For 432/432 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 788 event pairs, 21 based on Foata normal form. 1/226 useless extension candidates. Maximal degree in co-relation 642. Up to 69 conditions per place. [2024-06-27 16:41:41,510 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 20 selfloop transitions, 1 changer transitions 19/44 dead transitions. [2024-06-27 16:41:41,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 230 flow [2024-06-27 16:41:41,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:41:41,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:41:41,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-06-27 16:41:41,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 16:41:41,512 INFO L175 Difference]: Start difference. First operand has 42 places, 23 transitions, 93 flow. Second operand 5 states and 75 transitions. [2024-06-27 16:41:41,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 230 flow [2024-06-27 16:41:41,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 218 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 16:41:41,513 INFO L231 Difference]: Finished difference. Result has 43 places, 21 transitions, 73 flow [2024-06-27 16:41:41,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=73, PETRI_PLACES=43, PETRI_TRANSITIONS=21} [2024-06-27 16:41:41,514 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2024-06-27 16:41:41,514 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 21 transitions, 73 flow [2024-06-27 16:41:41,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2024-06-27 16:41:41,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:41:41,515 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] [2024-06-27 16:41:41,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 16:41:41,515 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 1 more)] === [2024-06-27 16:41:41,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:41:41,516 INFO L85 PathProgramCache]: Analyzing trace with hash 104390900, now seen corresponding path program 6 times [2024-06-27 16:41:41,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:41:41,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933016745] [2024-06-27 16:41:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:41:41,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:41:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:41:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:41:41,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:41:41,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933016745] [2024-06-27 16:41:41,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933016745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:41:41,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:41:41,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:41:41,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014437258] [2024-06-27 16:41:41,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:41:41,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:41:41,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:41:41,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:41:41,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:41:41,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-27 16:41:41,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 21 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2024-06-27 16:41:41,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:41:41,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-27 16:41:41,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:41:41,983 INFO L124 PetriNetUnfolderBase]: 52/115 cut-off events. [2024-06-27 16:41:41,983 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-27 16:41:41,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 115 events. 52/115 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 292 event pairs, 10 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 327. Up to 54 conditions per place. [2024-06-27 16:41:41,984 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-06-27 16:41:41,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 29 transitions, 147 flow [2024-06-27 16:41:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:41:41,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:41:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-06-27 16:41:41,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496 [2024-06-27 16:41:41,985 INFO L175 Difference]: Start difference. First operand has 43 places, 21 transitions, 73 flow. Second operand 5 states and 62 transitions. [2024-06-27 16:41:41,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 29 transitions, 147 flow [2024-06-27 16:41:41,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 133 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 16:41:41,986 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-06-27 16:41:41,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-06-27 16:41:41,987 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-06-27 16:41:41,987 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-06-27 16:41:41,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2024-06-27 16:41:41,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-06-27 16:41:41,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-06-27 16:41:41,990 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 16:41:41,990 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 16:41:41,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 16:41:41,990 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2024-06-27 16:41:41,992 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 16:41:41,992 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 16:41:42,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 04:41:42 BasicIcfg [2024-06-27 16:41:42,010 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 16:41:42,011 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-06-27 16:41:42,011 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-06-27 16:41:42,011 INFO L274 PluginConnector]: Witness Printer initialized [2024-06-27 16:41:42,011 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:41:36" (3/4) ... [2024-06-27 16:41:42,013 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-06-27 16:41:42,015 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-06-27 16:41:42,015 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-06-27 16:41:42,015 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-06-27 16:41:42,019 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 78 nodes and edges [2024-06-27 16:41:42,019 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-06-27 16:41:42,019 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-06-27 16:41:42,019 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-06-27 16:41:42,086 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-06-27 16:41:42,087 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-06-27 16:41:42,087 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-06-27 16:41:42,088 INFO L158 Benchmark]: Toolchain (without parser) took 7014.33ms. Allocated memory was 138.4MB in the beginning and 421.5MB in the end (delta: 283.1MB). Free memory was 100.6MB in the beginning and 371.1MB in the end (delta: -270.5MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2024-06-27 16:41:42,088 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 138.4MB. Free memory is still 107.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 16:41:42,088 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.67ms. Allocated memory is still 138.4MB. Free memory was 100.6MB in the beginning and 99.8MB in the end (delta: 784.7kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-27 16:41:42,088 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.50ms. Allocated memory is still 138.4MB. Free memory was 99.8MB in the beginning and 97.5MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 16:41:42,088 INFO L158 Benchmark]: Boogie Preprocessor took 84.89ms. Allocated memory is still 138.4MB. Free memory was 97.5MB in the beginning and 94.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:41:42,089 INFO L158 Benchmark]: RCFGBuilder took 737.84ms. Allocated memory was 138.4MB in the beginning and 169.9MB in the end (delta: 31.5MB). Free memory was 94.9MB in the beginning and 94.5MB in the end (delta: 473.2kB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. [2024-06-27 16:41:42,090 INFO L158 Benchmark]: TraceAbstraction took 5586.39ms. Allocated memory was 169.9MB in the beginning and 421.5MB in the end (delta: 251.7MB). Free memory was 94.5MB in the beginning and 376.3MB in the end (delta: -281.8MB). Peak memory consumption was 205.2MB. Max. memory is 16.1GB. [2024-06-27 16:41:42,091 INFO L158 Benchmark]: Witness Printer took 76.39ms. Allocated memory is still 421.5MB. Free memory was 376.3MB in the beginning and 371.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 16:41:42,092 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 138.4MB. Free memory is still 107.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 452.67ms. Allocated memory is still 138.4MB. Free memory was 100.6MB in the beginning and 99.8MB in the end (delta: 784.7kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.50ms. Allocated memory is still 138.4MB. Free memory was 99.8MB in the beginning and 97.5MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.89ms. Allocated memory is still 138.4MB. Free memory was 97.5MB in the beginning and 94.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 737.84ms. Allocated memory was 138.4MB in the beginning and 169.9MB in the end (delta: 31.5MB). Free memory was 94.9MB in the beginning and 94.5MB in the end (delta: 473.2kB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5586.39ms. Allocated memory was 169.9MB in the beginning and 421.5MB in the end (delta: 251.7MB). Free memory was 94.5MB in the beginning and 376.3MB in the end (delta: -281.8MB). Peak memory consumption was 205.2MB. Max. memory is 16.1GB. * Witness Printer took 76.39ms. Allocated memory is still 421.5MB. Free memory was 376.3MB in the beginning and 371.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 93]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 41 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 123 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 123 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 604 IncrementalHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 604 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=4, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 4124 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 16:41:42,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE