./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-lamport.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 7641d1105b9de7b20c96680ae1baa82cbf27158c037dacb66ff49f347bd2fa94 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:26:36,121 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:26:36,176 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:26:36,181 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:26:36,182 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:26:36,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:26:36,203 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:26:36,204 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:26:36,204 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:26:36,207 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:26:36,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:26:36,207 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:26:36,208 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:26:36,208 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:26:36,208 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:26:36,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:26:36,209 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:26:36,209 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:26:36,209 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:26:36,209 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:26:36,209 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:26:36,212 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:26:36,212 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:26:36,212 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:26:36,212 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:26:36,213 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:26:36,213 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:26:36,213 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:26:36,213 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:26:36,213 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:26:36,214 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:26:36,214 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:26:36,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:26:36,215 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:26:36,215 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:26:36,215 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:26:36,215 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:26:36,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:26:36,216 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:26:36,216 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:26:36,216 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:26:36,216 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:26:36,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7641d1105b9de7b20c96680ae1baa82cbf27158c037dacb66ff49f347bd2fa94 [2024-11-16 19:26:36,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:26:36,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:26:36,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:26:36,428 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:26:36,431 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:26:36,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-11-16 19:26:37,669 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:26:37,863 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:26:37,863 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-11-16 19:26:37,869 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77ca19fdc/ba34996017764afcac53aa0e5e6a5676/FLAG97d340afa [2024-11-16 19:26:37,879 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77ca19fdc/ba34996017764afcac53aa0e5e6a5676 [2024-11-16 19:26:37,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:26:37,882 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:26:37,884 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:26:37,884 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:26:37,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:26:37,888 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:26:37" (1/1) ... [2024-11-16 19:26:37,889 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7efabbc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:37, skipping insertion in model container [2024-11-16 19:26:37,889 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:26:37" (1/1) ... [2024-11-16 19:26:37,904 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:26:38,066 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[3044,3057] [2024-11-16 19:26:38,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:26:38,092 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:26:38,112 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[3044,3057] [2024-11-16 19:26:38,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:26:38,128 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:26:38,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:38 WrapperNode [2024-11-16 19:26:38,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:26:38,132 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:26:38,132 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:26:38,132 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:26:38,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:38" (1/1) ... [2024-11-16 19:26:38,145 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:38" (1/1) ... [2024-11-16 19:26:38,164 INFO L138 Inliner]: procedures = 22, calls = 29, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 206 [2024-11-16 19:26:38,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:26:38,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:26:38,166 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:26:38,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:26:38,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:38" (1/1) ... [2024-11-16 19:26:38,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:38" (1/1) ... [2024-11-16 19:26:38,187 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:38" (1/1) ... [2024-11-16 19:26:38,214 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-16 19:26:38,214 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:38" (1/1) ... [2024-11-16 19:26:38,214 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:38" (1/1) ... [2024-11-16 19:26:38,223 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:38" (1/1) ... [2024-11-16 19:26:38,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:38" (1/1) ... [2024-11-16 19:26:38,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:38" (1/1) ... [2024-11-16 19:26:38,229 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:38" (1/1) ... [2024-11-16 19:26:38,234 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:26:38,236 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:26:38,236 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:26:38,236 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:26:38,237 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:38" (1/1) ... [2024-11-16 19:26:38,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:26:38,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:38,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:26:38,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:26:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:26:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:26:38,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:26:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:26:38,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:26:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-16 19:26:38,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-16 19:26:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:26:38,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:26:38,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:26:38,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:26:38,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 19:26:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:26:38,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:26:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:26:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:26:38,348 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:26:38,449 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:26:38,451 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:26:38,711 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:26:38,712 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:26:38,919 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:26:38,919 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:26:38,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:26:38 BoogieIcfgContainer [2024-11-16 19:26:38,919 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:26:38,922 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:26:38,923 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:26:38,925 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:26:38,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:26:37" (1/3) ... [2024-11-16 19:26:38,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f612159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:26:38, skipping insertion in model container [2024-11-16 19:26:38,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:38" (2/3) ... [2024-11-16 19:26:38,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f612159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:26:38, skipping insertion in model container [2024-11-16 19:26:38,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:26:38" (3/3) ... [2024-11-16 19:26:38,928 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2024-11-16 19:26:38,943 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:26:38,943 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:26:38,943 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:26:38,992 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-16 19:26:39,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 63 transitions, 147 flow [2024-11-16 19:26:39,045 INFO L124 PetriNetUnfolderBase]: 2/60 cut-off events. [2024-11-16 19:26:39,045 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:26:39,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 60 events. 2/60 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2024-11-16 19:26:39,048 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 63 transitions, 147 flow [2024-11-16 19:26:39,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 59 transitions, 136 flow [2024-11-16 19:26:39,057 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:26:39,061 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@9260b39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:26:39,061 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-16 19:26:39,075 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:26:39,076 INFO L124 PetriNetUnfolderBase]: 2/58 cut-off events. [2024-11-16 19:26:39,076 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:26:39,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:39,077 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:39,077 INFO L396 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)] === [2024-11-16 19:26:39,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:39,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1022570776, now seen corresponding path program 1 times [2024-11-16 19:26:39,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:39,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617160716] [2024-11-16 19:26:39,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:39,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:39,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:39,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:39,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617160716] [2024-11-16 19:26:39,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617160716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:39,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:39,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:26:39,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623785678] [2024-11-16 19:26:39,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:39,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:26:39,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:39,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:26:39,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:26:39,347 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 63 [2024-11-16 19:26:39,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 136 flow. Second operand has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:39,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:39,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 63 [2024-11-16 19:26:39,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:39,839 INFO L124 PetriNetUnfolderBase]: 3049/4650 cut-off events. [2024-11-16 19:26:39,841 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2024-11-16 19:26:39,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9498 conditions, 4650 events. 3049/4650 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 22992 event pairs, 3048 based on Foata normal form. 1/4614 useless extension candidates. Maximal degree in co-relation 9029. Up to 4555 conditions per place. [2024-11-16 19:26:39,867 INFO L140 encePairwiseOnDemand]: 62/63 looper letters, 51 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2024-11-16 19:26:39,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 58 transitions, 236 flow [2024-11-16 19:26:39,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:26:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:26:39,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 72 transitions. [2024-11-16 19:26:39,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-16 19:26:39,879 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 136 flow. Second operand 2 states and 72 transitions. [2024-11-16 19:26:39,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 58 transitions, 236 flow [2024-11-16 19:26:39,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 224 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-16 19:26:39,889 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 122 flow [2024-11-16 19:26:39,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=122, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-16 19:26:39,894 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -5 predicate places. [2024-11-16 19:26:39,894 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 122 flow [2024-11-16 19:26:39,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:39,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:39,895 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:39,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:26:39,896 INFO L396 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)] === [2024-11-16 19:26:39,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:39,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1584382225, now seen corresponding path program 1 times [2024-11-16 19:26:39,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:39,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081728789] [2024-11-16 19:26:39,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:39,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:40,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:40,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:40,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081728789] [2024-11-16 19:26:40,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081728789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:40,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:40,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:26:40,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849408419] [2024-11-16 19:26:40,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:40,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:26:40,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:40,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:26:40,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:26:40,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 63 [2024-11-16 19:26:40,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:40,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:40,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 63 [2024-11-16 19:26:40,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:40,709 INFO L124 PetriNetUnfolderBase]: 3049/4653 cut-off events. [2024-11-16 19:26:40,709 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-16 19:26:40,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9324 conditions, 4653 events. 3049/4653 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 22960 event pairs, 3048 based on Foata normal form. 1/4615 useless extension candidates. Maximal degree in co-relation 9321. Up to 4547 conditions per place. [2024-11-16 19:26:40,730 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 49 selfloop transitions, 4 changer transitions 1/60 dead transitions. [2024-11-16 19:26:40,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 234 flow [2024-11-16 19:26:40,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:26:40,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:26:40,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2024-11-16 19:26:40,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31746031746031744 [2024-11-16 19:26:40,735 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 122 flow. Second operand 5 states and 100 transitions. [2024-11-16 19:26:40,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 234 flow [2024-11-16 19:26:40,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 234 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:26:40,738 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 140 flow [2024-11-16 19:26:40,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2024-11-16 19:26:40,740 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2024-11-16 19:26:40,740 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 140 flow [2024-11-16 19:26:40,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:40,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:40,741 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:40,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:26:40,741 INFO L396 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)] === [2024-11-16 19:26:40,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:40,742 INFO L85 PathProgramCache]: Analyzing trace with hash 314483837, now seen corresponding path program 1 times [2024-11-16 19:26:40,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:40,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512754671] [2024-11-16 19:26:40,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:40,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:40,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:40,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512754671] [2024-11-16 19:26:40,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512754671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:40,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:40,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:26:40,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911833480] [2024-11-16 19:26:40,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:40,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:26:40,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:40,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:26:40,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:26:40,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 63 [2024-11-16 19:26:40,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) [2024-11-16 19:26:40,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:40,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 63 [2024-11-16 19:26:40,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:41,197 INFO L124 PetriNetUnfolderBase]: 3021/4618 cut-off events. [2024-11-16 19:26:41,198 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-16 19:26:41,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9270 conditions, 4618 events. 3021/4618 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 22940 event pairs, 2414 based on Foata normal form. 28/4617 useless extension candidates. Maximal degree in co-relation 9264. Up to 3630 conditions per place. [2024-11-16 19:26:41,219 INFO L140 encePairwiseOnDemand]: 60/63 looper letters, 67 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2024-11-16 19:26:41,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 76 transitions, 314 flow [2024-11-16 19:26:41,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:26:41,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:26:41,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-11-16 19:26:41,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-11-16 19:26:41,222 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 140 flow. Second operand 3 states and 99 transitions. [2024-11-16 19:26:41,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 76 transitions, 314 flow [2024-11-16 19:26:41,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 306 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-16 19:26:41,224 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 140 flow [2024-11-16 19:26:41,224 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2024-11-16 19:26:41,225 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 0 predicate places. [2024-11-16 19:26:41,226 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 140 flow [2024-11-16 19:26:41,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) [2024-11-16 19:26:41,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:41,227 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:41,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:26:41,227 INFO L396 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)] === [2024-11-16 19:26:41,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:41,228 INFO L85 PathProgramCache]: Analyzing trace with hash -40953843, now seen corresponding path program 2 times [2024-11-16 19:26:41,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:41,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982570647] [2024-11-16 19:26:41,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:41,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:41,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:41,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982570647] [2024-11-16 19:26:41,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982570647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:41,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:41,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:26:41,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525066494] [2024-11-16 19:26:41,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:41,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:26:41,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:41,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:26:41,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:26:41,406 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 63 [2024-11-16 19:26:41,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:41,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:41,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 63 [2024-11-16 19:26:41,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:41,766 INFO L124 PetriNetUnfolderBase]: 3659/5762 cut-off events. [2024-11-16 19:26:41,766 INFO L125 PetriNetUnfolderBase]: For 586/586 co-relation queries the response was YES. [2024-11-16 19:26:41,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12120 conditions, 5762 events. 3659/5762 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 32370 event pairs, 1074 based on Foata normal form. 98/5860 useless extension candidates. Maximal degree in co-relation 12114. Up to 2617 conditions per place. [2024-11-16 19:26:41,794 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 95 selfloop transitions, 7 changer transitions 1/110 dead transitions. [2024-11-16 19:26:41,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 110 transitions, 465 flow [2024-11-16 19:26:41,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:26:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:26:41,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 154 transitions. [2024-11-16 19:26:41,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-11-16 19:26:41,797 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 140 flow. Second operand 5 states and 154 transitions. [2024-11-16 19:26:41,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 110 transitions, 465 flow [2024-11-16 19:26:41,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 110 transitions, 453 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:26:41,803 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 178 flow [2024-11-16 19:26:41,803 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2024-11-16 19:26:41,804 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 5 predicate places. [2024-11-16 19:26:41,805 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 178 flow [2024-11-16 19:26:41,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:41,805 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:41,805 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:41,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:26:41,806 INFO L396 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)] === [2024-11-16 19:26:41,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:41,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1526621169, now seen corresponding path program 3 times [2024-11-16 19:26:41,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:41,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73778825] [2024-11-16 19:26:41,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:41,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:41,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:41,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73778825] [2024-11-16 19:26:41,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73778825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:41,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:41,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:26:41,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650856515] [2024-11-16 19:26:41,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:41,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:26:41,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:41,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:26:41,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:26:41,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 63 [2024-11-16 19:26:41,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) [2024-11-16 19:26:41,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:41,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 63 [2024-11-16 19:26:41,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:42,221 INFO L124 PetriNetUnfolderBase]: 3503/5440 cut-off events. [2024-11-16 19:26:42,222 INFO L125 PetriNetUnfolderBase]: For 1337/1337 co-relation queries the response was YES. [2024-11-16 19:26:42,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12520 conditions, 5440 events. 3503/5440 cut-off events. For 1337/1337 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 28726 event pairs, 2656 based on Foata normal form. 28/5440 useless extension candidates. Maximal degree in co-relation 12511. Up to 4404 conditions per place. [2024-11-16 19:26:42,334 INFO L140 encePairwiseOnDemand]: 60/63 looper letters, 73 selfloop transitions, 2 changer transitions 1/83 dead transitions. [2024-11-16 19:26:42,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 83 transitions, 387 flow [2024-11-16 19:26:42,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:26:42,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:26:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-11-16 19:26:42,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5291005291005291 [2024-11-16 19:26:42,335 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 178 flow. Second operand 3 states and 100 transitions. [2024-11-16 19:26:42,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 83 transitions, 387 flow [2024-11-16 19:26:42,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 382 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:26:42,341 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 182 flow [2024-11-16 19:26:42,341 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2024-11-16 19:26:42,342 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2024-11-16 19:26:42,342 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 182 flow [2024-11-16 19:26:42,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) [2024-11-16 19:26:42,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:42,343 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:42,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:26:42,343 INFO L396 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)] === [2024-11-16 19:26:42,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:42,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1264732933, now seen corresponding path program 4 times [2024-11-16 19:26:42,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:42,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913865435] [2024-11-16 19:26:42,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:42,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:42,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:42,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913865435] [2024-11-16 19:26:42,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913865435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:42,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481786681] [2024-11-16 19:26:42,820 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:26:42,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:42,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:42,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:42,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:26:42,920 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:26:42,920 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:42,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 19:26:42,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:43,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:26:43,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-16 19:26:43,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:43,381 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:43,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481786681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:43,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:43,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 21 [2024-11-16 19:26:43,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949778649] [2024-11-16 19:26:43,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:43,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:26:43,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:43,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:26:43,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2024-11-16 19:26:43,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 63 [2024-11-16 19:26:43,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 182 flow. Second operand has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:43,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:43,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 63 [2024-11-16 19:26:43,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:45,875 INFO L124 PetriNetUnfolderBase]: 6311/9576 cut-off events. [2024-11-16 19:26:45,876 INFO L125 PetriNetUnfolderBase]: For 3236/3236 co-relation queries the response was YES. [2024-11-16 19:26:45,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22445 conditions, 9576 events. 6311/9576 cut-off events. For 3236/3236 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 52706 event pairs, 1107 based on Foata normal form. 1/9576 useless extension candidates. Maximal degree in co-relation 22435. Up to 5444 conditions per place. [2024-11-16 19:26:45,923 INFO L140 encePairwiseOnDemand]: 46/63 looper letters, 233 selfloop transitions, 48 changer transitions 56/342 dead transitions. [2024-11-16 19:26:45,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 342 transitions, 1701 flow [2024-11-16 19:26:45,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 19:26:45,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-16 19:26:45,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 512 transitions. [2024-11-16 19:26:45,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3386243386243386 [2024-11-16 19:26:45,929 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 182 flow. Second operand 24 states and 512 transitions. [2024-11-16 19:26:45,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 342 transitions, 1701 flow [2024-11-16 19:26:45,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 342 transitions, 1685 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:26:45,936 INFO L231 Difference]: Finished difference. Result has 112 places, 110 transitions, 478 flow [2024-11-16 19:26:45,936 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=478, PETRI_PLACES=112, PETRI_TRANSITIONS=110} [2024-11-16 19:26:45,937 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 45 predicate places. [2024-11-16 19:26:45,937 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 110 transitions, 478 flow [2024-11-16 19:26:45,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:45,937 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:45,937 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:45,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 19:26:46,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-16 19:26:46,142 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:46,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:46,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1946282511, now seen corresponding path program 5 times [2024-11-16 19:26:46,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:46,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801835169] [2024-11-16 19:26:46,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:46,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:46,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:46,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801835169] [2024-11-16 19:26:46,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801835169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:46,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:46,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:26:46,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818641687] [2024-11-16 19:26:46,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:46,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:26:46,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:46,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:26:46,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:26:46,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 63 [2024-11-16 19:26:46,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 110 transitions, 478 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:46,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:46,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 63 [2024-11-16 19:26:46,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:46,695 INFO L124 PetriNetUnfolderBase]: 4026/6448 cut-off events. [2024-11-16 19:26:46,696 INFO L125 PetriNetUnfolderBase]: For 6789/6789 co-relation queries the response was YES. [2024-11-16 19:26:46,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19436 conditions, 6448 events. 4026/6448 cut-off events. For 6789/6789 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 37509 event pairs, 944 based on Foata normal form. 98/6527 useless extension candidates. Maximal degree in co-relation 19409. Up to 2925 conditions per place. [2024-11-16 19:26:46,756 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 162 selfloop transitions, 9 changer transitions 6/186 dead transitions. [2024-11-16 19:26:46,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 186 transitions, 1168 flow [2024-11-16 19:26:46,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:26:46,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:26:46,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-11-16 19:26:46,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.473015873015873 [2024-11-16 19:26:46,761 INFO L175 Difference]: Start difference. First operand has 112 places, 110 transitions, 478 flow. Second operand 5 states and 149 transitions. [2024-11-16 19:26:46,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 186 transitions, 1168 flow [2024-11-16 19:26:46,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 186 transitions, 1142 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-11-16 19:26:46,786 INFO L231 Difference]: Finished difference. Result has 104 places, 101 transitions, 434 flow [2024-11-16 19:26:46,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=434, PETRI_PLACES=104, PETRI_TRANSITIONS=101} [2024-11-16 19:26:46,787 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 37 predicate places. [2024-11-16 19:26:46,787 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 101 transitions, 434 flow [2024-11-16 19:26:46,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:46,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:46,788 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:46,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 19:26:46,788 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:46,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:46,789 INFO L85 PathProgramCache]: Analyzing trace with hash 969328345, now seen corresponding path program 6 times [2024-11-16 19:26:46,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:46,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184026922] [2024-11-16 19:26:46,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:46,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:47,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:47,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184026922] [2024-11-16 19:26:47,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184026922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:47,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997361260] [2024-11-16 19:26:47,134 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:26:47,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:47,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:47,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:47,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:26:47,213 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-16 19:26:47,213 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:47,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 19:26:47,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:47,420 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:26:47,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-16 19:26:47,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:47,435 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:47,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997361260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:47,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:47,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 20 [2024-11-16 19:26:47,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880654143] [2024-11-16 19:26:47,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:47,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:26:47,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:47,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:26:47,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2024-11-16 19:26:47,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 63 [2024-11-16 19:26:47,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 101 transitions, 434 flow. Second operand has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:47,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:47,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 63 [2024-11-16 19:26:47,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:49,647 INFO L124 PetriNetUnfolderBase]: 5382/8348 cut-off events. [2024-11-16 19:26:49,648 INFO L125 PetriNetUnfolderBase]: For 8089/8089 co-relation queries the response was YES. [2024-11-16 19:26:49,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25275 conditions, 8348 events. 5382/8348 cut-off events. For 8089/8089 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 46568 event pairs, 1069 based on Foata normal form. 1/8348 useless extension candidates. Maximal degree in co-relation 25252. Up to 5639 conditions per place. [2024-11-16 19:26:49,688 INFO L140 encePairwiseOnDemand]: 46/63 looper letters, 232 selfloop transitions, 57 changer transitions 24/318 dead transitions. [2024-11-16 19:26:49,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 318 transitions, 2035 flow [2024-11-16 19:26:49,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 19:26:49,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-16 19:26:49,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 455 transitions. [2024-11-16 19:26:49,693 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30092592592592593 [2024-11-16 19:26:49,693 INFO L175 Difference]: Start difference. First operand has 104 places, 101 transitions, 434 flow. Second operand 24 states and 455 transitions. [2024-11-16 19:26:49,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 318 transitions, 2035 flow [2024-11-16 19:26:49,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 318 transitions, 1982 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-11-16 19:26:49,718 INFO L231 Difference]: Finished difference. Result has 139 places, 140 transitions, 822 flow [2024-11-16 19:26:49,719 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=822, PETRI_PLACES=139, PETRI_TRANSITIONS=140} [2024-11-16 19:26:49,719 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 72 predicate places. [2024-11-16 19:26:49,719 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 140 transitions, 822 flow [2024-11-16 19:26:49,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:49,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:49,719 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:49,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 19:26:49,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-16 19:26:49,921 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:49,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:49,921 INFO L85 PathProgramCache]: Analyzing trace with hash 166634919, now seen corresponding path program 7 times [2024-11-16 19:26:49,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:49,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752502328] [2024-11-16 19:26:49,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:49,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:50,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:50,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:50,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752502328] [2024-11-16 19:26:50,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752502328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:50,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734831227] [2024-11-16 19:26:50,251 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:26:50,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:50,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:50,252 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:50,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:26:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:50,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-16 19:26:50,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:50,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 19:26:50,656 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:26:50,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 20 [2024-11-16 19:26:50,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:50,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:50,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:50,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734831227] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:50,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:26:50,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13, 16] total 32 [2024-11-16 19:26:50,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116873944] [2024-11-16 19:26:50,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:50,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:26:50,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:50,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:26:50,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=910, Unknown=0, NotChecked=0, Total=992 [2024-11-16 19:26:50,978 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 63 [2024-11-16 19:26:50,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 140 transitions, 822 flow. Second operand has 13 states, 13 states have (on average 12.076923076923077) internal successors, (157), 13 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:50,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:50,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 63 [2024-11-16 19:26:50,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:52,629 INFO L124 PetriNetUnfolderBase]: 6093/9473 cut-off events. [2024-11-16 19:26:52,629 INFO L125 PetriNetUnfolderBase]: For 15891/15891 co-relation queries the response was YES. [2024-11-16 19:26:52,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32948 conditions, 9473 events. 6093/9473 cut-off events. For 15891/15891 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 54264 event pairs, 1354 based on Foata normal form. 1/9473 useless extension candidates. Maximal degree in co-relation 32912. Up to 6618 conditions per place. [2024-11-16 19:26:52,673 INFO L140 encePairwiseOnDemand]: 45/63 looper letters, 227 selfloop transitions, 47 changer transitions 51/330 dead transitions. [2024-11-16 19:26:52,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 330 transitions, 2380 flow [2024-11-16 19:26:52,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 19:26:52,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-16 19:26:52,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 417 transitions. [2024-11-16 19:26:52,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28778467908902694 [2024-11-16 19:26:52,676 INFO L175 Difference]: Start difference. First operand has 139 places, 140 transitions, 822 flow. Second operand 23 states and 417 transitions. [2024-11-16 19:26:52,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 330 transitions, 2380 flow [2024-11-16 19:26:52,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 330 transitions, 2189 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-11-16 19:26:52,757 INFO L231 Difference]: Finished difference. Result has 169 places, 170 transitions, 1076 flow [2024-11-16 19:26:52,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1076, PETRI_PLACES=169, PETRI_TRANSITIONS=170} [2024-11-16 19:26:52,758 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 102 predicate places. [2024-11-16 19:26:52,758 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 170 transitions, 1076 flow [2024-11-16 19:26:52,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.076923076923077) internal successors, (157), 13 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:52,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:52,758 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:52,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 19:26:52,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:52,959 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:52,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:52,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1662902317, now seen corresponding path program 8 times [2024-11-16 19:26:52,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:52,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911306811] [2024-11-16 19:26:52,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:52,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:53,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:53,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911306811] [2024-11-16 19:26:53,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911306811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:53,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079771301] [2024-11-16 19:26:53,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:26:53,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:53,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:53,264 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:53,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 19:26:53,339 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 19:26:53,340 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:53,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 19:26:53,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:53,538 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:26:53,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-16 19:26:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:53,547 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:53,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079771301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:53,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:53,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 21 [2024-11-16 19:26:53,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056258526] [2024-11-16 19:26:53,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:53,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:26:53,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:53,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:26:53,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2024-11-16 19:26:53,597 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 63 [2024-11-16 19:26:53,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 170 transitions, 1076 flow. Second operand has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:53,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:53,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 63 [2024-11-16 19:26:53,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:55,395 INFO L124 PetriNetUnfolderBase]: 6113/9509 cut-off events. [2024-11-16 19:26:55,395 INFO L125 PetriNetUnfolderBase]: For 21405/21405 co-relation queries the response was YES. [2024-11-16 19:26:55,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35350 conditions, 9509 events. 6113/9509 cut-off events. For 21405/21405 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 54645 event pairs, 1446 based on Foata normal form. 1/9509 useless extension candidates. Maximal degree in co-relation 35300. Up to 6925 conditions per place. [2024-11-16 19:26:55,455 INFO L140 encePairwiseOnDemand]: 46/63 looper letters, 209 selfloop transitions, 40 changer transitions 75/329 dead transitions. [2024-11-16 19:26:55,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 329 transitions, 2558 flow [2024-11-16 19:26:55,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 19:26:55,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-16 19:26:55,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 358 transitions. [2024-11-16 19:26:55,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31569664902998235 [2024-11-16 19:26:55,457 INFO L175 Difference]: Start difference. First operand has 169 places, 170 transitions, 1076 flow. Second operand 18 states and 358 transitions. [2024-11-16 19:26:55,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 329 transitions, 2558 flow [2024-11-16 19:26:55,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 329 transitions, 2384 flow, removed 86 selfloop flow, removed 7 redundant places. [2024-11-16 19:26:55,570 INFO L231 Difference]: Finished difference. Result has 182 places, 171 transitions, 1083 flow [2024-11-16 19:26:55,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1083, PETRI_PLACES=182, PETRI_TRANSITIONS=171} [2024-11-16 19:26:55,571 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 115 predicate places. [2024-11-16 19:26:55,571 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 171 transitions, 1083 flow [2024-11-16 19:26:55,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:55,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:55,572 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:55,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:55,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:55,776 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:55,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:55,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1419443369, now seen corresponding path program 9 times [2024-11-16 19:26:55,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:55,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728356569] [2024-11-16 19:26:55,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:55,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:56,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:56,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728356569] [2024-11-16 19:26:56,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728356569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:56,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983844542] [2024-11-16 19:26:56,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:26:56,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:56,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:56,068 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:56,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 19:26:56,135 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-16 19:26:56,136 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:56,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 19:26:56,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:56,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:26:56,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-16 19:26:56,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:56,392 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:56,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983844542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:56,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:56,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 21 [2024-11-16 19:26:56,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160664133] [2024-11-16 19:26:56,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:56,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:26:56,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:56,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:26:56,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2024-11-16 19:26:56,430 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 63 [2024-11-16 19:26:56,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 171 transitions, 1083 flow. Second operand has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:56,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:56,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 63 [2024-11-16 19:26:56,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:58,812 INFO L124 PetriNetUnfolderBase]: 6497/10088 cut-off events. [2024-11-16 19:26:58,813 INFO L125 PetriNetUnfolderBase]: For 25727/25727 co-relation queries the response was YES. [2024-11-16 19:26:58,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38404 conditions, 10088 events. 6497/10088 cut-off events. For 25727/25727 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 58652 event pairs, 1345 based on Foata normal form. 1/10088 useless extension candidates. Maximal degree in co-relation 38350. Up to 6652 conditions per place. [2024-11-16 19:26:58,887 INFO L140 encePairwiseOnDemand]: 45/63 looper letters, 276 selfloop transitions, 56 changer transitions 52/389 dead transitions. [2024-11-16 19:26:58,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 389 transitions, 3055 flow [2024-11-16 19:26:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 19:26:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-16 19:26:58,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 466 transitions. [2024-11-16 19:26:58,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2958730158730159 [2024-11-16 19:26:58,890 INFO L175 Difference]: Start difference. First operand has 182 places, 171 transitions, 1083 flow. Second operand 25 states and 466 transitions. [2024-11-16 19:26:58,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 389 transitions, 3055 flow [2024-11-16 19:26:59,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 389 transitions, 2856 flow, removed 53 selfloop flow, removed 15 redundant places. [2024-11-16 19:26:59,012 INFO L231 Difference]: Finished difference. Result has 198 places, 198 transitions, 1451 flow [2024-11-16 19:26:59,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1451, PETRI_PLACES=198, PETRI_TRANSITIONS=198} [2024-11-16 19:26:59,013 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 131 predicate places. [2024-11-16 19:26:59,013 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 198 transitions, 1451 flow [2024-11-16 19:26:59,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:59,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:59,014 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:59,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:59,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 19:26:59,218 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:26:59,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:59,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1092365939, now seen corresponding path program 10 times [2024-11-16 19:26:59,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:59,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738240321] [2024-11-16 19:26:59,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:59,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:59,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:59,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738240321] [2024-11-16 19:26:59,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738240321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:59,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147977853] [2024-11-16 19:26:59,518 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:26:59,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:59,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:59,520 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:59,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 19:26:59,587 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:26:59,587 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:59,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 19:26:59,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:59,772 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:26:59,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-16 19:26:59,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:59,783 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:59,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147977853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:59,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:59,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 20 [2024-11-16 19:26:59,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407099490] [2024-11-16 19:26:59,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:59,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:26:59,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:59,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:26:59,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2024-11-16 19:26:59,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 63 [2024-11-16 19:26:59,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 198 transitions, 1451 flow. Second operand has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:59,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:59,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 63 [2024-11-16 19:26:59,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:01,949 INFO L124 PetriNetUnfolderBase]: 6605/10226 cut-off events. [2024-11-16 19:27:01,949 INFO L125 PetriNetUnfolderBase]: For 33480/33480 co-relation queries the response was YES. [2024-11-16 19:27:02,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41687 conditions, 10226 events. 6605/10226 cut-off events. For 33480/33480 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 59317 event pairs, 1219 based on Foata normal form. 1/10226 useless extension candidates. Maximal degree in co-relation 41625. Up to 6769 conditions per place. [2024-11-16 19:27:02,068 INFO L140 encePairwiseOnDemand]: 45/63 looper letters, 315 selfloop transitions, 69 changer transitions 22/411 dead transitions. [2024-11-16 19:27:02,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 411 transitions, 3331 flow [2024-11-16 19:27:02,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 19:27:02,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-16 19:27:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 501 transitions. [2024-11-16 19:27:02,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2945326278659612 [2024-11-16 19:27:02,070 INFO L175 Difference]: Start difference. First operand has 198 places, 198 transitions, 1451 flow. Second operand 27 states and 501 transitions. [2024-11-16 19:27:02,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 411 transitions, 3331 flow [2024-11-16 19:27:02,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 411 transitions, 3097 flow, removed 116 selfloop flow, removed 7 redundant places. [2024-11-16 19:27:02,255 INFO L231 Difference]: Finished difference. Result has 219 places, 212 transitions, 1621 flow [2024-11-16 19:27:02,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1621, PETRI_PLACES=219, PETRI_TRANSITIONS=212} [2024-11-16 19:27:02,255 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 152 predicate places. [2024-11-16 19:27:02,255 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 212 transitions, 1621 flow [2024-11-16 19:27:02,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:27:02,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:02,256 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:02,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 19:27:02,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:02,457 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:27:02,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:02,457 INFO L85 PathProgramCache]: Analyzing trace with hash 580123629, now seen corresponding path program 11 times [2024-11-16 19:27:02,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:02,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698109239] [2024-11-16 19:27:02,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:02,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:02,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:02,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698109239] [2024-11-16 19:27:02,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698109239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:02,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038759616] [2024-11-16 19:27:02,856 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:27:02,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:02,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:02,860 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:27:02,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 19:27:02,959 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:27:02,959 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:02,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-16 19:27:02,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:02,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-16 19:27:03,102 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 15 treesize of output 7 [2024-11-16 19:27:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:03,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:03,616 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 33 treesize of output 29 [2024-11-16 19:27:03,625 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-16 19:27:03,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-11-16 19:27:03,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:03,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038759616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:03,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:03,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12] total 26 [2024-11-16 19:27:03,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825387897] [2024-11-16 19:27:03,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:03,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 19:27:03,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:03,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 19:27:03,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2024-11-16 19:27:03,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 63 [2024-11-16 19:27:03,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 212 transitions, 1621 flow. Second operand has 26 states, 26 states have (on average 12.5) internal successors, (325), 26 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:27:03,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:03,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 63 [2024-11-16 19:27:03,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:07,418 INFO L124 PetriNetUnfolderBase]: 14508/22607 cut-off events. [2024-11-16 19:27:07,418 INFO L125 PetriNetUnfolderBase]: For 88805/88861 co-relation queries the response was YES. [2024-11-16 19:27:07,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95919 conditions, 22607 events. 14508/22607 cut-off events. For 88805/88861 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 152170 event pairs, 3211 based on Foata normal form. 17/22621 useless extension candidates. Maximal degree in co-relation 95854. Up to 9003 conditions per place. [2024-11-16 19:27:07,755 INFO L140 encePairwiseOnDemand]: 45/63 looper letters, 460 selfloop transitions, 156 changer transitions 19/647 dead transitions. [2024-11-16 19:27:07,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 647 transitions, 5846 flow [2024-11-16 19:27:07,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 19:27:07,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-16 19:27:07,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 472 transitions. [2024-11-16 19:27:07,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34054834054834054 [2024-11-16 19:27:07,760 INFO L175 Difference]: Start difference. First operand has 219 places, 212 transitions, 1621 flow. Second operand 22 states and 472 transitions. [2024-11-16 19:27:07,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 647 transitions, 5846 flow [2024-11-16 19:27:08,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 647 transitions, 5370 flow, removed 132 selfloop flow, removed 19 redundant places. [2024-11-16 19:27:08,558 INFO L231 Difference]: Finished difference. Result has 230 places, 355 transitions, 3344 flow [2024-11-16 19:27:08,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=1405, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3344, PETRI_PLACES=230, PETRI_TRANSITIONS=355} [2024-11-16 19:27:08,559 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 163 predicate places. [2024-11-16 19:27:08,559 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 355 transitions, 3344 flow [2024-11-16 19:27:08,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.5) internal successors, (325), 26 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:27:08,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:08,559 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:08,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 19:27:08,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:08,761 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:27:08,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:08,761 INFO L85 PathProgramCache]: Analyzing trace with hash 410888023, now seen corresponding path program 12 times [2024-11-16 19:27:08,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:08,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375518942] [2024-11-16 19:27:08,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:08,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:09,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:09,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375518942] [2024-11-16 19:27:09,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375518942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:09,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624685810] [2024-11-16 19:27:09,317 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:27:09,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:09,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:09,319 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:27:09,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 19:27:09,423 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-16 19:27:09,424 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:09,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 19:27:09,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:09,633 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:27:09,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-16 19:27:09,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:09,642 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:27:09,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624685810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:27:09,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:27:09,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 21 [2024-11-16 19:27:09,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763416274] [2024-11-16 19:27:09,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:27:09,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:27:09,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:09,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:27:09,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2024-11-16 19:27:09,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 63 [2024-11-16 19:27:09,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 355 transitions, 3344 flow. Second operand has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:27:09,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:09,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 63 [2024-11-16 19:27:09,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:14,534 INFO L124 PetriNetUnfolderBase]: 15645/24190 cut-off events. [2024-11-16 19:27:14,534 INFO L125 PetriNetUnfolderBase]: For 129011/129011 co-relation queries the response was YES. [2024-11-16 19:27:14,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111519 conditions, 24190 events. 15645/24190 cut-off events. For 129011/129011 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 161559 event pairs, 3998 based on Foata normal form. 2/24190 useless extension candidates. Maximal degree in co-relation 111446. Up to 18653 conditions per place. [2024-11-16 19:27:15,032 INFO L140 encePairwiseOnDemand]: 46/63 looper letters, 363 selfloop transitions, 122 changer transitions 75/566 dead transitions. [2024-11-16 19:27:15,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 566 transitions, 5964 flow [2024-11-16 19:27:15,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 19:27:15,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-16 19:27:15,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 452 transitions. [2024-11-16 19:27:15,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.286984126984127 [2024-11-16 19:27:15,037 INFO L175 Difference]: Start difference. First operand has 230 places, 355 transitions, 3344 flow. Second operand 25 states and 452 transitions. [2024-11-16 19:27:15,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 566 transitions, 5964 flow [2024-11-16 19:27:16,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 566 transitions, 5615 flow, removed 163 selfloop flow, removed 3 redundant places. [2024-11-16 19:27:16,553 INFO L231 Difference]: Finished difference. Result has 267 places, 378 transitions, 3799 flow [2024-11-16 19:27:16,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=3116, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3799, PETRI_PLACES=267, PETRI_TRANSITIONS=378} [2024-11-16 19:27:16,555 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 200 predicate places. [2024-11-16 19:27:16,555 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 378 transitions, 3799 flow [2024-11-16 19:27:16,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:27:16,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:16,556 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:16,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 19:27:16,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 19:27:16,757 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:27:16,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:16,757 INFO L85 PathProgramCache]: Analyzing trace with hash 317100095, now seen corresponding path program 13 times [2024-11-16 19:27:16,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:16,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984479316] [2024-11-16 19:27:16,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:16,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:17,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:17,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:17,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984479316] [2024-11-16 19:27:17,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984479316] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:17,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120533447] [2024-11-16 19:27:17,037 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:27:17,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:17,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:17,039 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:27:17,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 19:27:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:17,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-16 19:27:17,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:17,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 19:27:17,683 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:27:17,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2024-11-16 19:27:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:17,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:18,816 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 72 treesize of output 64 [2024-11-16 19:27:18,837 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:27:18,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 116 [2024-11-16 19:27:19,209 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 74 treesize of output 66 [2024-11-16 19:27:19,216 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2024-11-16 19:27:19,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 1 [2024-11-16 19:27:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:19,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120533447] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:19,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:19,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 36 [2024-11-16 19:27:19,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158818020] [2024-11-16 19:27:19,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:19,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-16 19:27:19,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:19,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-16 19:27:19,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1102, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 19:27:19,430 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 63 [2024-11-16 19:27:19,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 378 transitions, 3799 flow. Second operand has 36 states, 36 states have (on average 10.777777777777779) internal successors, (388), 36 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:27:19,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:19,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 63 [2024-11-16 19:27:19,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:28,358 INFO L124 PetriNetUnfolderBase]: 20100/31201 cut-off events. [2024-11-16 19:27:28,359 INFO L125 PetriNetUnfolderBase]: For 219862/219862 co-relation queries the response was YES. [2024-11-16 19:27:28,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152507 conditions, 31201 events. 20100/31201 cut-off events. For 219862/219862 co-relation queries the response was YES. Maximal size of possible extension queue 980. Compared 219902 event pairs, 3552 based on Foata normal form. 2/31200 useless extension candidates. Maximal degree in co-relation 152418. Up to 10151 conditions per place. [2024-11-16 19:27:29,056 INFO L140 encePairwiseOnDemand]: 40/63 looper letters, 489 selfloop transitions, 103 changer transitions 531/1127 dead transitions. [2024-11-16 19:27:29,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 1127 transitions, 11730 flow [2024-11-16 19:27:29,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-16 19:27:29,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-11-16 19:27:29,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 949 transitions. [2024-11-16 19:27:29,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30126984126984124 [2024-11-16 19:27:29,058 INFO L175 Difference]: Start difference. First operand has 267 places, 378 transitions, 3799 flow. Second operand 50 states and 949 transitions. [2024-11-16 19:27:29,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 1127 transitions, 11730 flow [2024-11-16 19:27:31,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 1127 transitions, 11365 flow, removed 143 selfloop flow, removed 10 redundant places. [2024-11-16 19:27:31,627 INFO L231 Difference]: Finished difference. Result has 321 places, 337 transitions, 3656 flow [2024-11-16 19:27:31,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=3547, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=3656, PETRI_PLACES=321, PETRI_TRANSITIONS=337} [2024-11-16 19:27:31,628 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 254 predicate places. [2024-11-16 19:27:31,628 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 337 transitions, 3656 flow [2024-11-16 19:27:31,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.777777777777779) internal successors, (388), 36 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:27:31,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:31,629 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:31,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 19:27:31,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 19:27:31,833 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:27:31,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:31,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1871581993, now seen corresponding path program 14 times [2024-11-16 19:27:31,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:31,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011373417] [2024-11-16 19:27:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:31,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:32,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:32,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011373417] [2024-11-16 19:27:32,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011373417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:32,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284262703] [2024-11-16 19:27:32,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:27:32,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:32,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:32,173 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:27:32,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 19:27:32,267 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 19:27:32,267 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:32,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 19:27:32,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:32,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:27:32,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-16 19:27:32,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:32,523 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:27:32,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284262703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:27:32,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:27:32,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 21 [2024-11-16 19:27:32,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357135925] [2024-11-16 19:27:32,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:27:32,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:27:32,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:32,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:27:32,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2024-11-16 19:27:32,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 63 [2024-11-16 19:27:32,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 337 transitions, 3656 flow. Second operand has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:27:32,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:32,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 63 [2024-11-16 19:27:32,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:37,359 INFO L124 PetriNetUnfolderBase]: 12512/19679 cut-off events. [2024-11-16 19:27:37,359 INFO L125 PetriNetUnfolderBase]: For 202240/202240 co-relation queries the response was YES. [2024-11-16 19:27:37,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102917 conditions, 19679 events. 12512/19679 cut-off events. For 202240/202240 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 130557 event pairs, 3870 based on Foata normal form. 3/19680 useless extension candidates. Maximal degree in co-relation 102808. Up to 15306 conditions per place. [2024-11-16 19:27:37,602 INFO L140 encePairwiseOnDemand]: 46/63 looper letters, 371 selfloop transitions, 85 changer transitions 57/519 dead transitions. [2024-11-16 19:27:37,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 519 transitions, 5979 flow [2024-11-16 19:27:37,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 19:27:37,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-16 19:27:37,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 422 transitions. [2024-11-16 19:27:37,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2912353347135956 [2024-11-16 19:27:37,607 INFO L175 Difference]: Start difference. First operand has 321 places, 337 transitions, 3656 flow. Second operand 23 states and 422 transitions. [2024-11-16 19:27:37,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 519 transitions, 5979 flow [2024-11-16 19:27:39,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 519 transitions, 5248 flow, removed 326 selfloop flow, removed 29 redundant places. [2024-11-16 19:27:39,748 INFO L231 Difference]: Finished difference. Result has 291 places, 345 transitions, 3477 flow [2024-11-16 19:27:39,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3477, PETRI_PLACES=291, PETRI_TRANSITIONS=345} [2024-11-16 19:27:39,748 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 224 predicate places. [2024-11-16 19:27:39,749 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 345 transitions, 3477 flow [2024-11-16 19:27:39,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:27:39,749 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:39,749 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:39,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 19:27:39,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-16 19:27:39,950 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:27:39,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:39,950 INFO L85 PathProgramCache]: Analyzing trace with hash -533408165, now seen corresponding path program 15 times [2024-11-16 19:27:39,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:39,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772447236] [2024-11-16 19:27:39,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:39,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:40,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:40,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:40,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772447236] [2024-11-16 19:27:40,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772447236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:40,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684969419] [2024-11-16 19:27:40,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:27:40,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:40,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:40,512 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:27:40,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 19:27:40,592 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-16 19:27:40,592 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:40,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 19:27:40,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:40,799 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:27:40,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-16 19:27:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:40,813 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:27:40,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684969419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:27:40,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:27:40,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 20 [2024-11-16 19:27:40,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69977969] [2024-11-16 19:27:40,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:27:40,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:27:40,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:40,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:27:40,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2024-11-16 19:27:40,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 63 [2024-11-16 19:27:40,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 345 transitions, 3477 flow. Second operand has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:27:40,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:40,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 63 [2024-11-16 19:27:40,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:45,111 INFO L124 PetriNetUnfolderBase]: 12444/19587 cut-off events. [2024-11-16 19:27:45,111 INFO L125 PetriNetUnfolderBase]: For 154062/154062 co-relation queries the response was YES. [2024-11-16 19:27:45,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96991 conditions, 19587 events. 12444/19587 cut-off events. For 154062/154062 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 130095 event pairs, 3676 based on Foata normal form. 2/19587 useless extension candidates. Maximal degree in co-relation 96893. Up to 14755 conditions per place. [2024-11-16 19:27:45,450 INFO L140 encePairwiseOnDemand]: 46/63 looper letters, 383 selfloop transitions, 110 changer transitions 43/542 dead transitions. [2024-11-16 19:27:45,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 542 transitions, 5884 flow [2024-11-16 19:27:45,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 19:27:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-16 19:27:45,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 454 transitions. [2024-11-16 19:27:45,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28825396825396826 [2024-11-16 19:27:45,452 INFO L175 Difference]: Start difference. First operand has 291 places, 345 transitions, 3477 flow. Second operand 25 states and 454 transitions. [2024-11-16 19:27:45,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 542 transitions, 5884 flow [2024-11-16 19:27:47,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 542 transitions, 5461 flow, removed 109 selfloop flow, removed 19 redundant places. [2024-11-16 19:27:47,092 INFO L231 Difference]: Finished difference. Result has 300 places, 366 transitions, 3682 flow [2024-11-16 19:27:47,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=3133, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3682, PETRI_PLACES=300, PETRI_TRANSITIONS=366} [2024-11-16 19:27:47,093 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 233 predicate places. [2024-11-16 19:27:47,097 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 366 transitions, 3682 flow [2024-11-16 19:27:47,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:27:47,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:47,098 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:47,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 19:27:47,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 19:27:47,298 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:27:47,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:47,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1187963845, now seen corresponding path program 16 times [2024-11-16 19:27:47,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:47,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493395943] [2024-11-16 19:27:47,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:47,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:47,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:47,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:47,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493395943] [2024-11-16 19:27:47,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493395943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:47,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136437956] [2024-11-16 19:27:47,546 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:27:47,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:47,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:47,549 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:27:47,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 19:27:47,618 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:27:47,618 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:47,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 19:27:47,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:48,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:27:48,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-16 19:27:48,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:48,066 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:27:48,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136437956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:27:48,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:27:48,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 21 [2024-11-16 19:27:48,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901750182] [2024-11-16 19:27:48,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:27:48,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:27:48,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:48,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:27:48,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2024-11-16 19:27:48,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 63 [2024-11-16 19:27:48,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 366 transitions, 3682 flow. Second operand has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:27:48,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:48,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 63 [2024-11-16 19:27:48,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:52,700 INFO L124 PetriNetUnfolderBase]: 12372/19556 cut-off events. [2024-11-16 19:27:52,701 INFO L125 PetriNetUnfolderBase]: For 149684/149684 co-relation queries the response was YES. [2024-11-16 19:27:52,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95988 conditions, 19556 events. 12372/19556 cut-off events. For 149684/149684 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 130296 event pairs, 3614 based on Foata normal form. 2/19556 useless extension candidates. Maximal degree in co-relation 95888. Up to 14426 conditions per place. [2024-11-16 19:27:52,925 INFO L140 encePairwiseOnDemand]: 46/63 looper letters, 392 selfloop transitions, 97 changer transitions 64/559 dead transitions. [2024-11-16 19:27:52,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 559 transitions, 5974 flow [2024-11-16 19:27:52,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-16 19:27:52,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-16 19:27:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 470 transitions. [2024-11-16 19:27:52,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2869352869352869 [2024-11-16 19:27:52,929 INFO L175 Difference]: Start difference. First operand has 300 places, 366 transitions, 3682 flow. Second operand 26 states and 470 transitions. [2024-11-16 19:27:52,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 559 transitions, 5974 flow [2024-11-16 19:27:54,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 559 transitions, 5662 flow, removed 81 selfloop flow, removed 17 redundant places. [2024-11-16 19:27:54,306 INFO L231 Difference]: Finished difference. Result has 310 places, 358 transitions, 3552 flow [2024-11-16 19:27:54,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=3418, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3552, PETRI_PLACES=310, PETRI_TRANSITIONS=358} [2024-11-16 19:27:54,307 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 243 predicate places. [2024-11-16 19:27:54,307 INFO L471 AbstractCegarLoop]: Abstraction has has 310 places, 358 transitions, 3552 flow [2024-11-16 19:27:54,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:27:54,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:54,307 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:54,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-16 19:27:54,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 19:27:54,512 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:27:54,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:54,512 INFO L85 PathProgramCache]: Analyzing trace with hash -557739033, now seen corresponding path program 17 times [2024-11-16 19:27:54,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:54,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948243226] [2024-11-16 19:27:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:54,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:54,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:54,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948243226] [2024-11-16 19:27:54,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948243226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:54,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117680029] [2024-11-16 19:27:54,770 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:27:54,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:54,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:54,772 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:27:54,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 19:27:54,844 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:27:54,844 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:54,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-16 19:27:54,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:54,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-16 19:27:54,995 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 15 treesize of output 7 [2024-11-16 19:27:55,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:55,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:55,492 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 33 treesize of output 29 [2024-11-16 19:27:55,501 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-16 19:27:55,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-11-16 19:27:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:55,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117680029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:55,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:55,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12] total 28 [2024-11-16 19:27:55,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642929146] [2024-11-16 19:27:55,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:55,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-16 19:27:55,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:55,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-16 19:27:55,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2024-11-16 19:27:55,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 63 [2024-11-16 19:27:55,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 358 transitions, 3552 flow. Second operand has 28 states, 28 states have (on average 12.392857142857142) internal successors, (347), 28 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:27:55,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:55,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 63 [2024-11-16 19:27:55,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:00,136 INFO L124 PetriNetUnfolderBase]: 11780/18842 cut-off events. [2024-11-16 19:28:00,137 INFO L125 PetriNetUnfolderBase]: For 146240/146288 co-relation queries the response was YES. [2024-11-16 19:28:00,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91997 conditions, 18842 events. 11780/18842 cut-off events. For 146240/146288 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 127021 event pairs, 3091 based on Foata normal form. 1/18840 useless extension candidates. Maximal degree in co-relation 91894. Up to 9979 conditions per place. [2024-11-16 19:28:00,311 INFO L140 encePairwiseOnDemand]: 43/63 looper letters, 456 selfloop transitions, 110 changer transitions 43/621 dead transitions. [2024-11-16 19:28:00,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 621 transitions, 6349 flow [2024-11-16 19:28:00,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-16 19:28:00,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-16 19:28:00,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 535 transitions. [2024-11-16 19:28:00,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3032879818594104 [2024-11-16 19:28:00,313 INFO L175 Difference]: Start difference. First operand has 310 places, 358 transitions, 3552 flow. Second operand 28 states and 535 transitions. [2024-11-16 19:28:00,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 621 transitions, 6349 flow [2024-11-16 19:28:01,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 621 transitions, 6079 flow, removed 31 selfloop flow, removed 24 redundant places. [2024-11-16 19:28:01,276 INFO L231 Difference]: Finished difference. Result has 317 places, 376 transitions, 3893 flow [2024-11-16 19:28:01,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=3332, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3893, PETRI_PLACES=317, PETRI_TRANSITIONS=376} [2024-11-16 19:28:01,277 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 250 predicate places. [2024-11-16 19:28:01,277 INFO L471 AbstractCegarLoop]: Abstraction has has 317 places, 376 transitions, 3893 flow [2024-11-16 19:28:01,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.392857142857142) internal successors, (347), 28 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:01,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:01,277 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:28:01,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-16 19:28:01,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:28:01,482 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:28:01,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:01,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1573108913, now seen corresponding path program 18 times [2024-11-16 19:28:01,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:01,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40608498] [2024-11-16 19:28:01,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:01,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:01,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:01,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40608498] [2024-11-16 19:28:01,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40608498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:28:01,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695719507] [2024-11-16 19:28:01,722 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:28:01,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:28:01,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:28:01,724 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:28:01,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 19:28:01,796 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-16 19:28:01,796 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:28:01,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 19:28:01,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:28:01,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:28:01,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-16 19:28:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:28:01,994 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:28:01,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695719507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:01,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:28:01,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 20 [2024-11-16 19:28:01,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939475505] [2024-11-16 19:28:01,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:01,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:28:01,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:01,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:28:01,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2024-11-16 19:28:02,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 63 [2024-11-16 19:28:02,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 376 transitions, 3893 flow. Second operand has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:02,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:02,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 63 [2024-11-16 19:28:02,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:06,484 INFO L124 PetriNetUnfolderBase]: 11935/18922 cut-off events. [2024-11-16 19:28:06,485 INFO L125 PetriNetUnfolderBase]: For 149018/149018 co-relation queries the response was YES. [2024-11-16 19:28:06,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93268 conditions, 18922 events. 11935/18922 cut-off events. For 149018/149018 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 125816 event pairs, 3705 based on Foata normal form. 4/18924 useless extension candidates. Maximal degree in co-relation 93160. Up to 14532 conditions per place. [2024-11-16 19:28:06,703 INFO L140 encePairwiseOnDemand]: 46/63 looper letters, 367 selfloop transitions, 76 changer transitions 94/543 dead transitions. [2024-11-16 19:28:06,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 543 transitions, 5908 flow [2024-11-16 19:28:06,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 19:28:06,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-16 19:28:06,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 451 transitions. [2024-11-16 19:28:06,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28634920634920635 [2024-11-16 19:28:06,705 INFO L175 Difference]: Start difference. First operand has 317 places, 376 transitions, 3893 flow. Second operand 25 states and 451 transitions. [2024-11-16 19:28:06,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 543 transitions, 5908 flow [2024-11-16 19:28:07,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 543 transitions, 5743 flow, removed 61 selfloop flow, removed 12 redundant places. [2024-11-16 19:28:07,865 INFO L231 Difference]: Finished difference. Result has 328 places, 346 transitions, 3591 flow [2024-11-16 19:28:07,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=3754, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3591, PETRI_PLACES=328, PETRI_TRANSITIONS=346} [2024-11-16 19:28:07,866 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 261 predicate places. [2024-11-16 19:28:07,866 INFO L471 AbstractCegarLoop]: Abstraction has has 328 places, 346 transitions, 3591 flow [2024-11-16 19:28:07,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:28:07,866 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:07,866 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:28:07,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-16 19:28:08,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:28:08,068 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:28:08,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:08,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1606935809, now seen corresponding path program 19 times [2024-11-16 19:28:08,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:08,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483284724] [2024-11-16 19:28:08,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:08,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:08,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:08,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483284724] [2024-11-16 19:28:08,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483284724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:28:08,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539375530] [2024-11-16 19:28:08,380 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:28:08,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:28:08,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:28:08,381 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:28:08,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 19:28:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:08,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-16 19:28:08,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:28:08,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1