./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/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 a4f33aa2cc1f38311ba2397f8e50d98656063732fb966533fd95353a255f95b1 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:36:41,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:36:41,185 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:36:41,190 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:36:41,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:36:41,218 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:36:41,219 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:36:41,219 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:36:41,220 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:36:41,220 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:36:41,221 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:36:41,221 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:36:41,222 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:36:41,222 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:36:41,222 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:36:41,223 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:36:41,223 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:36:41,223 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:36:41,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:36:41,224 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:36:41,224 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:36:41,225 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:36:41,225 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:36:41,225 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:36:41,225 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:36:41,226 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:36:41,226 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:36:41,226 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:36:41,226 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:36:41,227 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:36:41,227 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:36:41,227 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:36:41,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:36:41,228 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:36:41,228 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:36:41,228 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:36:41,228 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:36:41,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:36:41,229 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:36:41,229 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:36:41,230 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:36:41,230 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:36:41,230 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4f33aa2cc1f38311ba2397f8e50d98656063732fb966533fd95353a255f95b1 [2024-10-14 14:36:41,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:36:41,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:36:41,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:36:41,523 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:36:41,523 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:36:41,524 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-10-14 14:36:42,988 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:36:43,193 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:36:43,194 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-10-14 14:36:43,205 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7957bf9b6/f0a413307ffa40758ece34f968812424/FLAGab6f4a1ad [2024-10-14 14:36:43,216 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7957bf9b6/f0a413307ffa40758ece34f968812424 [2024-10-14 14:36:43,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:36:43,220 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:36:43,221 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:36:43,221 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:36:43,226 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:36:43,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:36:43" (1/1) ... [2024-10-14 14:36:43,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@422ddad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:43, skipping insertion in model container [2024-10-14 14:36:43,232 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:36:43" (1/1) ... [2024-10-14 14:36:43,257 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:36:43,476 WARN L248 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[4249,4262] [2024-10-14 14:36:43,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:36:43,513 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:36:43,547 WARN L248 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[4249,4262] [2024-10-14 14:36:43,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:36:43,574 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:36:43,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:43 WrapperNode [2024-10-14 14:36:43,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:36:43,577 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:36:43,577 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:36:43,577 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:36:43,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:43" (1/1) ... [2024-10-14 14:36:43,594 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:43" (1/1) ... [2024-10-14 14:36:43,625 INFO L138 Inliner]: procedures = 24, calls = 74, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 228 [2024-10-14 14:36:43,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:36:43,626 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:36:43,627 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:36:43,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:36:43,637 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:43" (1/1) ... [2024-10-14 14:36:43,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:43" (1/1) ... [2024-10-14 14:36:43,641 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:43" (1/1) ... [2024-10-14 14:36:43,661 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]. [2024-10-14 14:36:43,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:43" (1/1) ... [2024-10-14 14:36:43,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:43" (1/1) ... [2024-10-14 14:36:43,668 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:43" (1/1) ... [2024-10-14 14:36:43,672 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:43" (1/1) ... [2024-10-14 14:36:43,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:43" (1/1) ... [2024-10-14 14:36:43,679 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:43" (1/1) ... [2024-10-14 14:36:43,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:36:43,685 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:36:43,686 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:36:43,686 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:36:43,687 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:43" (1/1) ... [2024-10-14 14:36:43,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:36:43,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:43,722 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) [2024-10-14 14:36:43,725 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 [2024-10-14 14:36:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:36:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 14:36:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 14:36:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 14:36:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 14:36:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 14:36:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 14:36:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:36:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 14:36:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 14:36:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 14:36:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 14:36:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 14:36:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 14:36:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:36:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:36:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 14:36:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 14:36:43,778 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 14:36:43,882 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:36:43,884 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:36:44,166 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:36:44,166 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:36:44,489 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:36:44,489 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 14:36:44,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:36:44 BoogieIcfgContainer [2024-10-14 14:36:44,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:36:44,493 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:36:44,493 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:36:44,497 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:36:44,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:36:43" (1/3) ... [2024-10-14 14:36:44,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdbc3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:36:44, skipping insertion in model container [2024-10-14 14:36:44,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:36:43" (2/3) ... [2024-10-14 14:36:44,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdbc3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:36:44, skipping insertion in model container [2024-10-14 14:36:44,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:36:44" (3/3) ... [2024-10-14 14:36:44,500 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2024-10-14 14:36:44,514 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:36:44,514 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:36:44,514 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:36:44,554 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 14:36:44,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 115 flow [2024-10-14 14:36:44,635 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-10-14 14:36:44,635 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 14:36:44,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 1/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-10-14 14:36:44,638 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 115 flow [2024-10-14 14:36:44,642 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 104 flow [2024-10-14 14:36:44,654 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:36:44,664 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;@1de932b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:36:44,664 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 14:36:44,687 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:36:44,688 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2024-10-14 14:36:44,688 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 14:36:44,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:44,689 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] [2024-10-14 14:36:44,689 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)] === [2024-10-14 14:36:44,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:44,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1033759554, now seen corresponding path program 1 times [2024-10-14 14:36:44,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:44,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871031583] [2024-10-14 14:36:44,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:44,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:45,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:45,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:45,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871031583] [2024-10-14 14:36:45,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871031583] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:45,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:45,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 14:36:45,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926447015] [2024-10-14 14:36:45,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:45,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 14:36:45,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:45,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 14:36:45,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 14:36:45,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-14 14:36:45,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-10-14 14:36:45,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:45,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-14 14:36:45,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:45,678 INFO L124 PetriNetUnfolderBase]: 893/1581 cut-off events. [2024-10-14 14:36:45,679 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-10-14 14:36:45,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3085 conditions, 1581 events. 893/1581 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9098 event pairs, 892 based on Foata normal form. 0/1538 useless extension candidates. Maximal degree in co-relation 2851. Up to 1377 conditions per place. [2024-10-14 14:36:45,702 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 26 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2024-10-14 14:36:45,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 162 flow [2024-10-14 14:36:45,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 14:36:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 14:36:45,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-10-14 14:36:45,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6099290780141844 [2024-10-14 14:36:45,718 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 104 flow. Second operand 3 states and 86 transitions. [2024-10-14 14:36:45,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 162 flow [2024-10-14 14:36:45,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 14:36:45,731 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 104 flow [2024-10-14 14:36:45,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2024-10-14 14:36:45,738 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2024-10-14 14:36:45,739 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 104 flow [2024-10-14 14:36:45,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-10-14 14:36:45,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:45,740 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] [2024-10-14 14:36:45,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:36:45,741 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)] === [2024-10-14 14:36:45,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:45,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1217611630, now seen corresponding path program 1 times [2024-10-14 14:36:45,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:45,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667198840] [2024-10-14 14:36:45,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:45,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:46,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:46,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667198840] [2024-10-14 14:36:46,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667198840] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:46,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:46,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 14:36:46,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453362240] [2024-10-14 14:36:46,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:46,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 14:36:46,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:46,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 14:36:46,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 14:36:46,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-14 14:36:46,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 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) [2024-10-14 14:36:46,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:46,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-14 14:36:46,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:46,839 INFO L124 PetriNetUnfolderBase]: 3808/6261 cut-off events. [2024-10-14 14:36:46,839 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-10-14 14:36:46,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12179 conditions, 6261 events. 3808/6261 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 39268 event pairs, 705 based on Foata normal form. 60/6305 useless extension candidates. Maximal degree in co-relation 12168. Up to 1665 conditions per place. [2024-10-14 14:36:46,873 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 127 selfloop transitions, 16 changer transitions 0/153 dead transitions. [2024-10-14 14:36:46,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 153 transitions, 622 flow [2024-10-14 14:36:46,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 14:36:46,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 14:36:46,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 260 transitions. [2024-10-14 14:36:46,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6146572104018913 [2024-10-14 14:36:46,876 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 104 flow. Second operand 9 states and 260 transitions. [2024-10-14 14:36:46,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 153 transitions, 622 flow [2024-10-14 14:36:46,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 153 transitions, 618 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-14 14:36:46,880 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 196 flow [2024-10-14 14:36:46,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=196, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-10-14 14:36:46,881 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-10-14 14:36:46,881 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 196 flow [2024-10-14 14:36:46,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 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) [2024-10-14 14:36:46,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:46,882 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] [2024-10-14 14:36:46,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:36:46,882 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)] === [2024-10-14 14:36:46,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:46,883 INFO L85 PathProgramCache]: Analyzing trace with hash -151464718, now seen corresponding path program 2 times [2024-10-14 14:36:46,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:46,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077645587] [2024-10-14 14:36:46,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:46,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:47,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:47,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077645587] [2024-10-14 14:36:47,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077645587] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:47,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405215673] [2024-10-14 14:36:47,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 14:36:47,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:47,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:47,662 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) [2024-10-14 14:36:47,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 14:36:47,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 14:36:47,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:36:47,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 14:36:47,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:48,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:36:48,147 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 [2024-10-14 14:36:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:48,164 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 14:36:48,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405215673] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:48,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 14:36:48,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-14 14:36:48,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385642821] [2024-10-14 14:36:48,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:48,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:36:48,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:48,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:36:48,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-10-14 14:36:48,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 14:36:48,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 196 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:48,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:48,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 14:36:48,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:49,067 INFO L124 PetriNetUnfolderBase]: 4271/7048 cut-off events. [2024-10-14 14:36:49,068 INFO L125 PetriNetUnfolderBase]: For 735/735 co-relation queries the response was YES. [2024-10-14 14:36:49,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14583 conditions, 7048 events. 4271/7048 cut-off events. For 735/735 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 46664 event pairs, 767 based on Foata normal form. 2/6893 useless extension candidates. Maximal degree in co-relation 14562. Up to 3666 conditions per place. [2024-10-14 14:36:49,119 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 82 selfloop transitions, 16 changer transitions 16/142 dead transitions. [2024-10-14 14:36:49,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 142 transitions, 608 flow [2024-10-14 14:36:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 14:36:49,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 14:36:49,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 284 transitions. [2024-10-14 14:36:49,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6042553191489362 [2024-10-14 14:36:49,122 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 196 flow. Second operand 10 states and 284 transitions. [2024-10-14 14:36:49,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 142 transitions, 608 flow [2024-10-14 14:36:49,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 142 transitions, 608 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 14:36:49,144 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 283 flow [2024-10-14 14:36:49,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=283, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2024-10-14 14:36:49,145 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2024-10-14 14:36:49,145 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 283 flow [2024-10-14 14:36:49,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:49,146 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:49,146 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] [2024-10-14 14:36:49,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 14:36:49,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:49,348 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)] === [2024-10-14 14:36:49,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:49,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1872739512, now seen corresponding path program 3 times [2024-10-14 14:36:49,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:49,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410800810] [2024-10-14 14:36:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:49,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:49,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:49,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410800810] [2024-10-14 14:36:49,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410800810] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:49,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972917979] [2024-10-14 14:36:49,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 14:36:49,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:49,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:49,863 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) [2024-10-14 14:36:49,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 14:36:49,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-14 14:36:49,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:36:49,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 14:36:49,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:50,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:36:50,174 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 [2024-10-14 14:36:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:50,190 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 14:36:50,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972917979] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:50,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 14:36:50,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-14 14:36:50,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094195486] [2024-10-14 14:36:50,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:50,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:36:50,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:50,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:36:50,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-10-14 14:36:50,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 14:36:50,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 283 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:50,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:50,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 14:36:50,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:51,725 INFO L124 PetriNetUnfolderBase]: 7013/11619 cut-off events. [2024-10-14 14:36:51,725 INFO L125 PetriNetUnfolderBase]: For 3192/3192 co-relation queries the response was YES. [2024-10-14 14:36:51,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27125 conditions, 11619 events. 7013/11619 cut-off events. For 3192/3192 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 84633 event pairs, 1950 based on Foata normal form. 2/11408 useless extension candidates. Maximal degree in co-relation 27098. Up to 5193 conditions per place. [2024-10-14 14:36:51,817 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 132 selfloop transitions, 25 changer transitions 7/192 dead transitions. [2024-10-14 14:36:51,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 192 transitions, 965 flow [2024-10-14 14:36:51,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 14:36:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 14:36:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 327 transitions. [2024-10-14 14:36:51,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.632495164410058 [2024-10-14 14:36:51,820 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 283 flow. Second operand 11 states and 327 transitions. [2024-10-14 14:36:51,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 192 transitions, 965 flow [2024-10-14 14:36:51,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 192 transitions, 959 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-14 14:36:51,849 INFO L231 Difference]: Finished difference. Result has 89 places, 94 transitions, 503 flow [2024-10-14 14:36:51,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=503, PETRI_PLACES=89, PETRI_TRANSITIONS=94} [2024-10-14 14:36:51,852 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2024-10-14 14:36:51,852 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 94 transitions, 503 flow [2024-10-14 14:36:51,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:51,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:51,853 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] [2024-10-14 14:36:51,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 14:36:52,053 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,SelfDestructingSolverStorable3 [2024-10-14 14:36:52,054 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)] === [2024-10-14 14:36:52,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:52,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1977101006, now seen corresponding path program 4 times [2024-10-14 14:36:52,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:52,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889207734] [2024-10-14 14:36:52,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:52,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:52,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:52,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:52,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889207734] [2024-10-14 14:36:52,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889207734] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:52,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571893939] [2024-10-14 14:36:52,537 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 14:36:52,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:52,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:52,541 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) [2024-10-14 14:36:52,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 14:36:52,617 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 14:36:52,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:36:52,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 14:36:52,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:52,908 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:36:52,908 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 [2024-10-14 14:36:52,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:52,922 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 14:36:52,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571893939] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:52,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 14:36:52,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-14 14:36:52,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050938644] [2024-10-14 14:36:52,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:52,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:36:52,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:52,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:36:52,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-10-14 14:36:52,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 14:36:52,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 94 transitions, 503 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:52,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:52,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 14:36:52,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:54,475 INFO L124 PetriNetUnfolderBase]: 7832/13192 cut-off events. [2024-10-14 14:36:54,475 INFO L125 PetriNetUnfolderBase]: For 11745/11745 co-relation queries the response was YES. [2024-10-14 14:36:54,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35044 conditions, 13192 events. 7832/13192 cut-off events. For 11745/11745 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 99559 event pairs, 1925 based on Foata normal form. 2/12933 useless extension candidates. Maximal degree in co-relation 35008. Up to 8983 conditions per place. [2024-10-14 14:36:54,689 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 99 selfloop transitions, 24 changer transitions 18/169 dead transitions. [2024-10-14 14:36:54,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 169 transitions, 1041 flow [2024-10-14 14:36:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 14:36:54,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 14:36:54,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 282 transitions. [2024-10-14 14:36:54,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-14 14:36:54,692 INFO L175 Difference]: Start difference. First operand has 89 places, 94 transitions, 503 flow. Second operand 10 states and 282 transitions. [2024-10-14 14:36:54,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 169 transitions, 1041 flow [2024-10-14 14:36:54,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 169 transitions, 1025 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-14 14:36:54,841 INFO L231 Difference]: Finished difference. Result has 100 places, 102 transitions, 626 flow [2024-10-14 14:36:54,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=626, PETRI_PLACES=100, PETRI_TRANSITIONS=102} [2024-10-14 14:36:54,844 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 48 predicate places. [2024-10-14 14:36:54,844 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 102 transitions, 626 flow [2024-10-14 14:36:54,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:54,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:54,845 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] [2024-10-14 14:36:54,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 14:36:55,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:55,050 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)] === [2024-10-14 14:36:55,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:55,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1027043792, now seen corresponding path program 5 times [2024-10-14 14:36:55,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:55,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180845204] [2024-10-14 14:36:55,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:55,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:55,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:55,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180845204] [2024-10-14 14:36:55,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180845204] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:55,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080018100] [2024-10-14 14:36:55,563 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 14:36:55,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:55,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:55,565 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) [2024-10-14 14:36:55,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 14:36:55,661 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 14:36:55,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:36:55,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-14 14:36:55,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:55,981 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-10-14 14:36:55,982 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 36 treesize of output 20 [2024-10-14 14:36:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:56,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:36:56,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:36:56,414 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 66 treesize of output 38 [2024-10-14 14:36:56,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:56,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080018100] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:36:56,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:36:56,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 22 [2024-10-14 14:36:56,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120908035] [2024-10-14 14:36:56,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:36:56,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-14 14:36:56,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:56,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-14 14:36:56,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2024-10-14 14:36:56,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-10-14 14:36:56,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 102 transitions, 626 flow. Second operand has 23 states, 23 states have (on average 21.434782608695652) internal successors, (493), 23 states have internal predecessors, (493), 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) [2024-10-14 14:36:56,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:56,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-10-14 14:36:56,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:59,745 INFO L124 PetriNetUnfolderBase]: 16947/28740 cut-off events. [2024-10-14 14:36:59,745 INFO L125 PetriNetUnfolderBase]: For 32708/32768 co-relation queries the response was YES. [2024-10-14 14:36:59,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77881 conditions, 28740 events. 16947/28740 cut-off events. For 32708/32768 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 247718 event pairs, 5807 based on Foata normal form. 74/28132 useless extension candidates. Maximal degree in co-relation 77785. Up to 10762 conditions per place. [2024-10-14 14:36:59,927 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 73 selfloop transitions, 9 changer transitions 235/348 dead transitions. [2024-10-14 14:36:59,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 348 transitions, 2598 flow [2024-10-14 14:36:59,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 14:36:59,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-14 14:36:59,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 482 transitions. [2024-10-14 14:36:59,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6409574468085106 [2024-10-14 14:36:59,929 INFO L175 Difference]: Start difference. First operand has 100 places, 102 transitions, 626 flow. Second operand 16 states and 482 transitions. [2024-10-14 14:36:59,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 348 transitions, 2598 flow [2024-10-14 14:37:00,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 348 transitions, 2414 flow, removed 71 selfloop flow, removed 3 redundant places. [2024-10-14 14:37:00,484 INFO L231 Difference]: Finished difference. Result has 122 places, 103 transitions, 754 flow [2024-10-14 14:37:00,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=754, PETRI_PLACES=122, PETRI_TRANSITIONS=103} [2024-10-14 14:37:00,485 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 70 predicate places. [2024-10-14 14:37:00,485 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 103 transitions, 754 flow [2024-10-14 14:37:00,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 21.434782608695652) internal successors, (493), 23 states have internal predecessors, (493), 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) [2024-10-14 14:37:00,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:00,486 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] [2024-10-14 14:37:00,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 14:37:00,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:37:00,687 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)] === [2024-10-14 14:37:00,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:00,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1088648126, now seen corresponding path program 6 times [2024-10-14 14:37:00,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:00,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544923406] [2024-10-14 14:37:00,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:00,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:02,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:02,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544923406] [2024-10-14 14:37:02,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544923406] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:37:02,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996479762] [2024-10-14 14:37:02,770 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 14:37:02,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:37:02,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:37:02,772 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) [2024-10-14 14:37:02,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 14:37:02,876 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-14 14:37:02,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:37:02,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 14:37:02,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:37:03,092 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:37:03,093 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 [2024-10-14 14:37:03,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:37:03,101 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 14:37:03,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996479762] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:37:03,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 14:37:03,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2024-10-14 14:37:03,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180086673] [2024-10-14 14:37:03,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:37:03,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:37:03,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:03,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:37:03,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2024-10-14 14:37:03,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 14:37:03,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 103 transitions, 754 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:03,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:03,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 14:37:03,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:37:05,012 INFO L124 PetriNetUnfolderBase]: 8742/14751 cut-off events. [2024-10-14 14:37:05,012 INFO L125 PetriNetUnfolderBase]: For 66440/66440 co-relation queries the response was YES. [2024-10-14 14:37:05,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59776 conditions, 14751 events. 8742/14751 cut-off events. For 66440/66440 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 114327 event pairs, 2439 based on Foata normal form. 2/14478 useless extension candidates. Maximal degree in co-relation 59721. Up to 8940 conditions per place. [2024-10-14 14:37:05,118 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 130 selfloop transitions, 35 changer transitions 7/200 dead transitions. [2024-10-14 14:37:05,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 200 transitions, 1714 flow [2024-10-14 14:37:05,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 14:37:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 14:37:05,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 317 transitions. [2024-10-14 14:37:05,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6131528046421664 [2024-10-14 14:37:05,123 INFO L175 Difference]: Start difference. First operand has 122 places, 103 transitions, 754 flow. Second operand 11 states and 317 transitions. [2024-10-14 14:37:05,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 200 transitions, 1714 flow [2024-10-14 14:37:05,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 200 transitions, 1582 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-10-14 14:37:05,369 INFO L231 Difference]: Finished difference. Result has 122 places, 120 transitions, 1017 flow [2024-10-14 14:37:05,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1017, PETRI_PLACES=122, PETRI_TRANSITIONS=120} [2024-10-14 14:37:05,370 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 70 predicate places. [2024-10-14 14:37:05,370 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 120 transitions, 1017 flow [2024-10-14 14:37:05,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:05,371 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:05,371 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] [2024-10-14 14:37:05,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 14:37:05,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:37:05,576 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)] === [2024-10-14 14:37:05,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:05,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2117586246, now seen corresponding path program 7 times [2024-10-14 14:37:05,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:05,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840811533] [2024-10-14 14:37:05,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:05,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:08,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:08,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:08,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840811533] [2024-10-14 14:37:08,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840811533] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:37:08,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726731551] [2024-10-14 14:37:08,170 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 14:37:08,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:37:08,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:37:08,172 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) [2024-10-14 14:37:08,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 14:37:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:08,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-14 14:37:08,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:37:08,491 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:37:08,492 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 [2024-10-14 14:37:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:37:08,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:37:08,741 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2024-10-14 14:37:08,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2024-10-14 14:37:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:37:08,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726731551] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 14:37:08,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 14:37:08,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 9] total 25 [2024-10-14 14:37:08,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352574575] [2024-10-14 14:37:08,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:37:08,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:37:08,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:08,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:37:08,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2024-10-14 14:37:08,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 14:37:08,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 120 transitions, 1017 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:08,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:08,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 14:37:08,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:37:11,442 INFO L124 PetriNetUnfolderBase]: 11460/19508 cut-off events. [2024-10-14 14:37:11,442 INFO L125 PetriNetUnfolderBase]: For 76454/76454 co-relation queries the response was YES. [2024-10-14 14:37:11,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75620 conditions, 19508 events. 11460/19508 cut-off events. For 76454/76454 co-relation queries the response was YES. Maximal size of possible extension queue 1049. Compared 159189 event pairs, 3189 based on Foata normal form. 2/19196 useless extension candidates. Maximal degree in co-relation 75564. Up to 9374 conditions per place. [2024-10-14 14:37:11,573 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 197 selfloop transitions, 63 changer transitions 5/293 dead transitions. [2024-10-14 14:37:11,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 293 transitions, 2701 flow [2024-10-14 14:37:11,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 14:37:11,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-14 14:37:11,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 498 transitions. [2024-10-14 14:37:11,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.623279098873592 [2024-10-14 14:37:11,576 INFO L175 Difference]: Start difference. First operand has 122 places, 120 transitions, 1017 flow. Second operand 17 states and 498 transitions. [2024-10-14 14:37:11,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 293 transitions, 2701 flow [2024-10-14 14:37:12,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 293 transitions, 2490 flow, removed 101 selfloop flow, removed 1 redundant places. [2024-10-14 14:37:12,186 INFO L231 Difference]: Finished difference. Result has 142 places, 151 transitions, 1480 flow [2024-10-14 14:37:12,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1480, PETRI_PLACES=142, PETRI_TRANSITIONS=151} [2024-10-14 14:37:12,186 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 90 predicate places. [2024-10-14 14:37:12,187 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 151 transitions, 1480 flow [2024-10-14 14:37:12,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:12,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:12,187 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] [2024-10-14 14:37:12,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 14:37:12,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:37:12,388 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)] === [2024-10-14 14:37:12,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:12,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1096708916, now seen corresponding path program 8 times [2024-10-14 14:37:12,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:12,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578114497] [2024-10-14 14:37:12,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:12,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:14,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:14,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:14,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578114497] [2024-10-14 14:37:14,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578114497] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:37:14,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920874291] [2024-10-14 14:37:14,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 14:37:14,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:37:14,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:37:14,104 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) [2024-10-14 14:37:14,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 14:37:14,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 14:37:14,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:37:14,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 14:37:14,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:37:14,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:37:14,411 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 [2024-10-14 14:37:14,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:37:14,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 14:37:14,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920874291] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:37:14,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 14:37:14,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2024-10-14 14:37:14,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299465279] [2024-10-14 14:37:14,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:37:14,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:37:14,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:14,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:37:14,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2024-10-14 14:37:14,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 14:37:14,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 151 transitions, 1480 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:14,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:14,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 14:37:14,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:37:16,575 INFO L124 PetriNetUnfolderBase]: 11426/19428 cut-off events. [2024-10-14 14:37:16,575 INFO L125 PetriNetUnfolderBase]: For 78537/78537 co-relation queries the response was YES. [2024-10-14 14:37:16,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76653 conditions, 19428 events. 11426/19428 cut-off events. For 78537/78537 co-relation queries the response was YES. Maximal size of possible extension queue 1058. Compared 158795 event pairs, 3954 based on Foata normal form. 2/19077 useless extension candidates. Maximal degree in co-relation 76591. Up to 13668 conditions per place. [2024-10-14 14:37:16,771 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 121 selfloop transitions, 38 changer transitions 34/221 dead transitions. [2024-10-14 14:37:16,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 221 transitions, 2179 flow [2024-10-14 14:37:16,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 14:37:16,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 14:37:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 290 transitions. [2024-10-14 14:37:16,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-10-14 14:37:16,773 INFO L175 Difference]: Start difference. First operand has 142 places, 151 transitions, 1480 flow. Second operand 10 states and 290 transitions. [2024-10-14 14:37:16,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 221 transitions, 2179 flow [2024-10-14 14:37:17,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 221 transitions, 2048 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-10-14 14:37:17,173 INFO L231 Difference]: Finished difference. Result has 149 places, 142 transitions, 1343 flow [2024-10-14 14:37:17,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1343, PETRI_PLACES=149, PETRI_TRANSITIONS=142} [2024-10-14 14:37:17,174 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 97 predicate places. [2024-10-14 14:37:17,174 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 142 transitions, 1343 flow [2024-10-14 14:37:17,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:17,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:17,174 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] [2024-10-14 14:37:17,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 14:37:17,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:37:17,375 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)] === [2024-10-14 14:37:17,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:17,376 INFO L85 PathProgramCache]: Analyzing trace with hash -782318092, now seen corresponding path program 9 times [2024-10-14 14:37:17,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:17,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061919843] [2024-10-14 14:37:17,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:17,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:37:17,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:17,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061919843] [2024-10-14 14:37:17,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061919843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:37:17,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:37:17,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 14:37:17,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82272216] [2024-10-14 14:37:17,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:37:17,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 14:37:17,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:17,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 14:37:17,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 14:37:17,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-14 14:37:17,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 142 transitions, 1343 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 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) [2024-10-14 14:37:17,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:17,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-14 14:37:17,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:37:21,714 INFO L124 PetriNetUnfolderBase]: 23191/37129 cut-off events. [2024-10-14 14:37:21,714 INFO L125 PetriNetUnfolderBase]: For 158091/158497 co-relation queries the response was YES. [2024-10-14 14:37:22,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145590 conditions, 37129 events. 23191/37129 cut-off events. For 158091/158497 co-relation queries the response was YES. Maximal size of possible extension queue 1365. Compared 290181 event pairs, 9178 based on Foata normal form. 126/36959 useless extension candidates. Maximal degree in co-relation 145528. Up to 22863 conditions per place. [2024-10-14 14:37:22,175 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 410 selfloop transitions, 19 changer transitions 28/474 dead transitions. [2024-10-14 14:37:22,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 474 transitions, 5559 flow [2024-10-14 14:37:22,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 14:37:22,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 14:37:22,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 302 transitions. [2024-10-14 14:37:22,177 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5841392649903289 [2024-10-14 14:37:22,177 INFO L175 Difference]: Start difference. First operand has 149 places, 142 transitions, 1343 flow. Second operand 11 states and 302 transitions. [2024-10-14 14:37:22,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 474 transitions, 5559 flow [2024-10-14 14:37:23,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 474 transitions, 5342 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-10-14 14:37:23,091 INFO L231 Difference]: Finished difference. Result has 150 places, 156 transitions, 1431 flow [2024-10-14 14:37:23,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1431, PETRI_PLACES=150, PETRI_TRANSITIONS=156} [2024-10-14 14:37:23,092 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 98 predicate places. [2024-10-14 14:37:23,092 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 156 transitions, 1431 flow [2024-10-14 14:37:23,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 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) [2024-10-14 14:37:23,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:23,093 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] [2024-10-14 14:37:23,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 14:37:23,094 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)] === [2024-10-14 14:37:23,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:23,094 INFO L85 PathProgramCache]: Analyzing trace with hash 772484988, now seen corresponding path program 10 times [2024-10-14 14:37:23,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:23,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267086543] [2024-10-14 14:37:23,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:23,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:23,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:37:23,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:23,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267086543] [2024-10-14 14:37:23,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267086543] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:37:23,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:37:23,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 14:37:23,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544504644] [2024-10-14 14:37:23,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:37:23,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 14:37:23,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:23,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 14:37:23,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 14:37:23,166 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 14:37:23,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 156 transitions, 1431 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-10-14 14:37:23,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:23,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 14:37:23,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:37:25,921 INFO L124 PetriNetUnfolderBase]: 15057/26260 cut-off events. [2024-10-14 14:37:25,921 INFO L125 PetriNetUnfolderBase]: For 108261/108658 co-relation queries the response was YES. [2024-10-14 14:37:26,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102936 conditions, 26260 events. 15057/26260 cut-off events. For 108261/108658 co-relation queries the response was YES. Maximal size of possible extension queue 1355. Compared 226483 event pairs, 12798 based on Foata normal form. 152/25739 useless extension candidates. Maximal degree in co-relation 102870. Up to 22705 conditions per place. [2024-10-14 14:37:26,227 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 120 selfloop transitions, 2 changer transitions 5/177 dead transitions. [2024-10-14 14:37:26,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 177 transitions, 1872 flow [2024-10-14 14:37:26,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 14:37:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 14:37:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-10-14 14:37:26,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-10-14 14:37:26,229 INFO L175 Difference]: Start difference. First operand has 150 places, 156 transitions, 1431 flow. Second operand 3 states and 93 transitions. [2024-10-14 14:37:26,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 177 transitions, 1872 flow [2024-10-14 14:37:27,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 177 transitions, 1866 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-14 14:37:27,149 INFO L231 Difference]: Finished difference. Result has 149 places, 155 transitions, 1424 flow [2024-10-14 14:37:27,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1424, PETRI_PLACES=149, PETRI_TRANSITIONS=155} [2024-10-14 14:37:27,150 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 97 predicate places. [2024-10-14 14:37:27,150 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 155 transitions, 1424 flow [2024-10-14 14:37:27,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-10-14 14:37:27,151 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:27,151 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] [2024-10-14 14:37:27,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 14:37:27,151 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)] === [2024-10-14 14:37:27,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:27,151 INFO L85 PathProgramCache]: Analyzing trace with hash -493662504, now seen corresponding path program 11 times [2024-10-14 14:37:27,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:27,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715641512] [2024-10-14 14:37:27,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:27,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:28,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:28,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:28,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715641512] [2024-10-14 14:37:28,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715641512] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:37:28,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412728863] [2024-10-14 14:37:28,741 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 14:37:28,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:37:28,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:37:28,743 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) [2024-10-14 14:37:28,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 14:37:28,827 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 14:37:28,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:37:28,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-14 14:37:28,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:37:28,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:37:28,974 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 [2024-10-14 14:37:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:37:28,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:37:29,109 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2024-10-14 14:37:29,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2024-10-14 14:37:29,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:37:29,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412728863] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 14:37:29,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 14:37:29,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 9] total 24 [2024-10-14 14:37:29,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565896943] [2024-10-14 14:37:29,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:37:29,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:37:29,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:29,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:37:29,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2024-10-14 14:37:29,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 14:37:29,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 155 transitions, 1424 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:29,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:29,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 14:37:29,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:37:32,572 INFO L124 PetriNetUnfolderBase]: 17054/29410 cut-off events. [2024-10-14 14:37:32,572 INFO L125 PetriNetUnfolderBase]: For 115419/115527 co-relation queries the response was YES. [2024-10-14 14:37:32,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116412 conditions, 29410 events. 17054/29410 cut-off events. For 115419/115527 co-relation queries the response was YES. Maximal size of possible extension queue 1552. Compared 255928 event pairs, 6471 based on Foata normal form. 97/29063 useless extension candidates. Maximal degree in co-relation 116346. Up to 16942 conditions per place. [2024-10-14 14:37:32,838 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 218 selfloop transitions, 51 changer transitions 1/313 dead transitions. [2024-10-14 14:37:32,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 313 transitions, 2876 flow [2024-10-14 14:37:32,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 14:37:32,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-14 14:37:32,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 513 transitions. [2024-10-14 14:37:32,840 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6063829787234043 [2024-10-14 14:37:32,841 INFO L175 Difference]: Start difference. First operand has 149 places, 155 transitions, 1424 flow. Second operand 18 states and 513 transitions. [2024-10-14 14:37:32,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 313 transitions, 2876 flow [2024-10-14 14:37:33,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 313 transitions, 2872 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 14:37:33,654 INFO L231 Difference]: Finished difference. Result has 168 places, 174 transitions, 1855 flow [2024-10-14 14:37:33,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1855, PETRI_PLACES=168, PETRI_TRANSITIONS=174} [2024-10-14 14:37:33,655 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 116 predicate places. [2024-10-14 14:37:33,655 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 174 transitions, 1855 flow [2024-10-14 14:37:33,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:33,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:33,655 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] [2024-10-14 14:37:33,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 14:37:33,856 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,SelfDestructingSolverStorable11 [2024-10-14 14:37:33,856 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)] === [2024-10-14 14:37:33,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:33,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1905502782, now seen corresponding path program 12 times [2024-10-14 14:37:33,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:33,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329004164] [2024-10-14 14:37:33,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:33,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:35,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329004164] [2024-10-14 14:37:35,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329004164] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:37:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64348546] [2024-10-14 14:37:35,391 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 14:37:35,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:37:35,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:37:35,392 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) [2024-10-14 14:37:35,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 14:37:35,472 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-14 14:37:35,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:37:35,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 14:37:35,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:37:35,617 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:37:35,617 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 [2024-10-14 14:37:35,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:37:35,624 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 14:37:35,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64348546] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:37:35,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 14:37:35,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2024-10-14 14:37:35,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49762027] [2024-10-14 14:37:35,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:37:35,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:37:35,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:35,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:37:35,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-10-14 14:37:35,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 14:37:35,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 174 transitions, 1855 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:35,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:35,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 14:37:35,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:37:39,154 INFO L124 PetriNetUnfolderBase]: 17883/30945 cut-off events. [2024-10-14 14:37:39,154 INFO L125 PetriNetUnfolderBase]: For 137900/138012 co-relation queries the response was YES. [2024-10-14 14:37:39,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126259 conditions, 30945 events. 17883/30945 cut-off events. For 137900/138012 co-relation queries the response was YES. Maximal size of possible extension queue 1681. Compared 272415 event pairs, 6165 based on Foata normal form. 101/30633 useless extension candidates. Maximal degree in co-relation 126189. Up to 19681 conditions per place. [2024-10-14 14:37:39,444 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 174 selfloop transitions, 40 changer transitions 5/262 dead transitions. [2024-10-14 14:37:39,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 262 transitions, 2758 flow [2024-10-14 14:37:39,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 14:37:39,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 14:37:39,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 319 transitions. [2024-10-14 14:37:39,446 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-10-14 14:37:39,447 INFO L175 Difference]: Start difference. First operand has 168 places, 174 transitions, 1855 flow. Second operand 11 states and 319 transitions. [2024-10-14 14:37:39,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 262 transitions, 2758 flow [2024-10-14 14:37:41,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 262 transitions, 2542 flow, removed 86 selfloop flow, removed 7 redundant places. [2024-10-14 14:37:41,178 INFO L231 Difference]: Finished difference. Result has 174 places, 178 transitions, 1787 flow [2024-10-14 14:37:41,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1639, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1787, PETRI_PLACES=174, PETRI_TRANSITIONS=178} [2024-10-14 14:37:41,179 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 122 predicate places. [2024-10-14 14:37:41,179 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 178 transitions, 1787 flow [2024-10-14 14:37:41,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:41,180 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:41,180 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] [2024-10-14 14:37:41,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-14 14:37:41,380 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,SelfDestructingSolverStorable12 [2024-10-14 14:37:41,380 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)] === [2024-10-14 14:37:41,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:41,381 INFO L85 PathProgramCache]: Analyzing trace with hash -380715410, now seen corresponding path program 13 times [2024-10-14 14:37:41,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:41,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677795768] [2024-10-14 14:37:41,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:41,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:43,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:37:43,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:37:43,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677795768] [2024-10-14 14:37:43,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677795768] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:37:43,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755061415] [2024-10-14 14:37:43,253 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 14:37:43,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:37:43,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:37:43,255 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) [2024-10-14 14:37:43,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 14:37:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:37:43,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-14 14:37:43,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:37:43,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 14:37:43,474 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 [2024-10-14 14:37:43,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:37:43,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:37:43,606 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2024-10-14 14:37:43,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2024-10-14 14:37:43,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 14:37:43,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755061415] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 14:37:43,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 14:37:43,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14, 9] total 25 [2024-10-14 14:37:43,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322970591] [2024-10-14 14:37:43,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:37:43,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:37:43,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:37:43,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:37:43,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2024-10-14 14:37:43,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-14 14:37:43,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 178 transitions, 1787 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:43,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:37:43,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-14 14:37:43,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:37:47,344 INFO L124 PetriNetUnfolderBase]: 19122/33210 cut-off events. [2024-10-14 14:37:47,344 INFO L125 PetriNetUnfolderBase]: For 133774/133898 co-relation queries the response was YES. [2024-10-14 14:37:47,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132258 conditions, 33210 events. 19122/33210 cut-off events. For 133774/133898 co-relation queries the response was YES. Maximal size of possible extension queue 1870. Compared 297856 event pairs, 5450 based on Foata normal form. 113/32793 useless extension candidates. Maximal degree in co-relation 132186. Up to 19264 conditions per place. [2024-10-14 14:37:47,826 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 182 selfloop transitions, 63 changer transitions 3/291 dead transitions. [2024-10-14 14:37:47,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 291 transitions, 2888 flow [2024-10-14 14:37:47,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 14:37:47,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 14:37:47,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 388 transitions. [2024-10-14 14:37:47,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6350245499181669 [2024-10-14 14:37:47,828 INFO L175 Difference]: Start difference. First operand has 174 places, 178 transitions, 1787 flow. Second operand 13 states and 388 transitions. [2024-10-14 14:37:47,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 291 transitions, 2888 flow [2024-10-14 14:37:49,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 291 transitions, 2776 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-10-14 14:37:49,247 INFO L231 Difference]: Finished difference. Result has 184 places, 185 transitions, 1991 flow [2024-10-14 14:37:49,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1991, PETRI_PLACES=184, PETRI_TRANSITIONS=185} [2024-10-14 14:37:49,248 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 132 predicate places. [2024-10-14 14:37:49,248 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 185 transitions, 1991 flow [2024-10-14 14:37:49,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:37:49,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:37:49,248 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] [2024-10-14 14:37:49,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-14 14:37:49,448 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,SelfDestructingSolverStorable13 [2024-10-14 14:37:49,449 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)] === [2024-10-14 14:37:49,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:37:49,449 INFO L85 PathProgramCache]: Analyzing trace with hash -257905010, now seen corresponding path program 14 times [2024-10-14 14:37:49,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:37:49,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881882338] [2024-10-14 14:37:49,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:37:49,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:37:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat