./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 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/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-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-11 14:29:04,332 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:29:04,390 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:29:04,395 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:29:04,395 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:29:04,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:29:04,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:29:04,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:29:04,418 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:29:04,418 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:29:04,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:29:04,419 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:29:04,419 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:29:04,420 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:29:04,421 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:29:04,421 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:29:04,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:29:04,422 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:29:04,422 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:29:04,423 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:29:04,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:29:04,429 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:29:04,429 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:29:04,430 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:29:04,430 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:29:04,430 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:29:04,430 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:29:04,430 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:29:04,430 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:29:04,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:29:04,431 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:29:04,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:29:04,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:29:04,431 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:29:04,431 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:29:04,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:29:04,432 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:29:04,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:29:04,432 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:29:04,432 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:29:04,432 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:29:04,434 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:29:04,434 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4f33aa2cc1f38311ba2397f8e50d98656063732fb966533fd95353a255f95b1 [2024-10-11 14:29:04,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:29:04,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:29:04,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:29:04,657 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:29:04,658 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:29:04,659 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-10-11 14:29:05,233 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:29:06,772 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:29:06,772 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-10-11 14:29:06,779 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/7cab52136/8d12fe290c3344e79cf0c561eb569b9f/FLAG257063a7b [2024-10-11 14:29:07,166 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/7cab52136/8d12fe290c3344e79cf0c561eb569b9f [2024-10-11 14:29:07,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:29:07,169 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:29:07,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:29:07,170 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:29:07,176 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:29:07,177 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:07" (1/1) ... [2024-10-11 14:29:07,178 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d9e2380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:07, skipping insertion in model container [2024-10-11 14:29:07,178 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:07" (1/1) ... [2024-10-11 14:29:07,194 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:29:07,391 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] [2024-10-11 14:29:07,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:29:07,405 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:29:07,427 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] [2024-10-11 14:29:07,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:29:07,445 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:29:07,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:07 WrapperNode [2024-10-11 14:29:07,446 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:29:07,447 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:29:07,447 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:29:07,447 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:29:07,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:07" (1/1) ... [2024-10-11 14:29:07,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:07" (1/1) ... [2024-10-11 14:29:07,476 INFO L138 Inliner]: procedures = 24, calls = 74, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 228 [2024-10-11 14:29:07,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:29:07,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:29:07,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:29:07,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:29:07,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:07" (1/1) ... [2024-10-11 14:29:07,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:07" (1/1) ... [2024-10-11 14:29:07,488 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:07" (1/1) ... [2024-10-11 14:29:07,499 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]. [2024-10-11 14:29:07,501 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:07" (1/1) ... [2024-10-11 14:29:07,502 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:07" (1/1) ... [2024-10-11 14:29:07,512 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:07" (1/1) ... [2024-10-11 14:29:07,515 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:07" (1/1) ... [2024-10-11 14:29:07,516 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:07" (1/1) ... [2024-10-11 14:29:07,517 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:07" (1/1) ... [2024-10-11 14:29:07,518 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:29:07,519 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:29:07,519 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:29:07,519 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:29:07,520 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:07" (1/1) ... [2024-10-11 14:29:07,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:29:07,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:07,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:29:07,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:29:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:29:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:29:07,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:29:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:29:07,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:29:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:29:07,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:29:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:29:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:29:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:29:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:29:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:29:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:29:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 14:29:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:29:07,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:29:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:29:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:29:07,601 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:29:07,707 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:29:07,709 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:29:07,955 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:29:07,955 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:29:08,162 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:29:08,163 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 14:29:08,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:08 BoogieIcfgContainer [2024-10-11 14:29:08,164 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:29:08,194 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:29:08,195 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:29:08,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:29:08,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:07" (1/3) ... [2024-10-11 14:29:08,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57807f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:08, skipping insertion in model container [2024-10-11 14:29:08,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:07" (2/3) ... [2024-10-11 14:29:08,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57807f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:08, skipping insertion in model container [2024-10-11 14:29:08,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:08" (3/3) ... [2024-10-11 14:29:08,201 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2024-10-11 14:29:08,216 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:29:08,216 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:29:08,217 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:29:08,270 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 14:29:08,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 115 flow [2024-10-11 14:29:08,355 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-10-11 14:29:08,356 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:29:08,361 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. [2024-10-11 14:29:08,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 115 flow [2024-10-11 14:29:08,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 104 flow [2024-10-11 14:29:08,373 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:29:08,378 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;@128241d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:29:08,378 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 14:29:08,396 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:29:08,396 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2024-10-11 14:29:08,396 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:29:08,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:08,398 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] [2024-10-11 14:29:08,398 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)] === [2024-10-11 14:29:08,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:08,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1033759554, now seen corresponding path program 1 times [2024-10-11 14:29:08,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:08,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39730559] [2024-10-11 14:29:08,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:08,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:08,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:08,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:08,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39730559] [2024-10-11 14:29:08,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39730559] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:08,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:29:08,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:29:08,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154265803] [2024-10-11 14:29:08,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:08,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:29:08,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:08,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:29:08,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:29:08,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-11 14:29:08,905 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) [2024-10-11 14:29:08,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:08,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-11 14:29:08,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:09,166 INFO L124 PetriNetUnfolderBase]: 893/1581 cut-off events. [2024-10-11 14:29:09,166 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-10-11 14:29:09,171 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. [2024-10-11 14:29:09,179 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 26 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2024-10-11 14:29:09,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 162 flow [2024-10-11 14:29:09,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:29:09,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:29:09,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-10-11 14:29:09,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6099290780141844 [2024-10-11 14:29:09,196 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 104 flow. Second operand 3 states and 86 transitions. [2024-10-11 14:29:09,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 162 flow [2024-10-11 14:29:09,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 14:29:09,207 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 104 flow [2024-10-11 14:29:09,209 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} [2024-10-11 14:29:09,215 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2024-10-11 14:29:09,215 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 104 flow [2024-10-11 14:29:09,216 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) [2024-10-11 14:29:09,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:09,216 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] [2024-10-11 14:29:09,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:29:09,216 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)] === [2024-10-11 14:29:09,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:09,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1217611630, now seen corresponding path program 1 times [2024-10-11 14:29:09,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:09,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245833420] [2024-10-11 14:29:09,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:09,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:29:09,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:09,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245833420] [2024-10-11 14:29:09,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245833420] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:09,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:29:09,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 14:29:09,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237674133] [2024-10-11 14:29:09,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:09,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:29:09,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:09,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:29:09,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:29:09,405 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-11 14:29:09,405 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) [2024-10-11 14:29:09,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:09,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-11 14:29:09,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:10,096 INFO L124 PetriNetUnfolderBase]: 3808/6261 cut-off events. [2024-10-11 14:29:10,097 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-10-11 14:29:10,117 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. [2024-10-11 14:29:10,142 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 127 selfloop transitions, 16 changer transitions 0/153 dead transitions. [2024-10-11 14:29:10,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 153 transitions, 622 flow [2024-10-11 14:29:10,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:29:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:29:10,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 260 transitions. [2024-10-11 14:29:10,146 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6146572104018913 [2024-10-11 14:29:10,147 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 104 flow. Second operand 9 states and 260 transitions. [2024-10-11 14:29:10,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 153 transitions, 622 flow [2024-10-11 14:29:10,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 153 transitions, 618 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 14:29:10,151 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 196 flow [2024-10-11 14:29:10,151 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} [2024-10-11 14:29:10,152 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-10-11 14:29:10,152 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 196 flow [2024-10-11 14:29:10,152 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) [2024-10-11 14:29:10,152 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:10,152 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] [2024-10-11 14:29:10,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:29:10,153 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)] === [2024-10-11 14:29:10,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:10,155 INFO L85 PathProgramCache]: Analyzing trace with hash -151464718, now seen corresponding path program 2 times [2024-10-11 14:29:10,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:10,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595182000] [2024-10-11 14:29:10,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:10,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:10,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:10,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595182000] [2024-10-11 14:29:10,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595182000] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:10,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744067861] [2024-10-11 14:29:10,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:29:10,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:10,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:10,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:10,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:29:10,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 14:29:10,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:10,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:29:10,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:11,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:29:11,086 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 [2024-10-11 14:29:11,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:29:11,096 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:29:11,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744067861] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:11,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:29:11,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-11 14:29:11,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70339342] [2024-10-11 14:29:11,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:11,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:29:11,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:11,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:29:11,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-10-11 14:29:11,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 14:29:11,106 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) [2024-10-11 14:29:11,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:11,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 14:29:11,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:11,825 INFO L124 PetriNetUnfolderBase]: 4271/7048 cut-off events. [2024-10-11 14:29:11,825 INFO L125 PetriNetUnfolderBase]: For 735/735 co-relation queries the response was YES. [2024-10-11 14:29:11,837 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. [2024-10-11 14:29:11,859 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 82 selfloop transitions, 16 changer transitions 16/142 dead transitions. [2024-10-11 14:29:11,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 142 transitions, 608 flow [2024-10-11 14:29:11,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:29:11,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:29:11,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 284 transitions. [2024-10-11 14:29:11,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6042553191489362 [2024-10-11 14:29:11,862 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 196 flow. Second operand 10 states and 284 transitions. [2024-10-11 14:29:11,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 142 transitions, 608 flow [2024-10-11 14:29:11,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 142 transitions, 608 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:29:11,874 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 283 flow [2024-10-11 14:29:11,875 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} [2024-10-11 14:29:11,875 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2024-10-11 14:29:11,875 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 283 flow [2024-10-11 14:29:11,876 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) [2024-10-11 14:29:11,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:11,876 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] [2024-10-11 14:29:11,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 14:29:12,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:12,077 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)] === [2024-10-11 14:29:12,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:12,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1872739512, now seen corresponding path program 3 times [2024-10-11 14:29:12,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:12,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882508797] [2024-10-11 14:29:12,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:12,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:12,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:12,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882508797] [2024-10-11 14:29:12,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882508797] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:12,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881874808] [2024-10-11 14:29:12,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:29:12,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:12,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:12,551 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:12,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:29:12,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-11 14:29:12,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:12,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:29:12,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:12,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:29:12,810 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 [2024-10-11 14:29:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:29:12,819 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:29:12,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881874808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:12,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:29:12,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-11 14:29:12,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823677711] [2024-10-11 14:29:12,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:12,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:29:12,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:12,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:29:12,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-10-11 14:29:12,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 14:29:12,831 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) [2024-10-11 14:29:12,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:12,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 14:29:12,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:13,892 INFO L124 PetriNetUnfolderBase]: 7013/11619 cut-off events. [2024-10-11 14:29:13,892 INFO L125 PetriNetUnfolderBase]: For 3192/3192 co-relation queries the response was YES. [2024-10-11 14:29:13,916 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. [2024-10-11 14:29:14,026 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 132 selfloop transitions, 25 changer transitions 7/192 dead transitions. [2024-10-11 14:29:14,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 192 transitions, 965 flow [2024-10-11 14:29:14,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:29:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:29:14,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 327 transitions. [2024-10-11 14:29:14,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.632495164410058 [2024-10-11 14:29:14,030 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 283 flow. Second operand 11 states and 327 transitions. [2024-10-11 14:29:14,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 192 transitions, 965 flow [2024-10-11 14:29:14,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 192 transitions, 959 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-11 14:29:14,043 INFO L231 Difference]: Finished difference. Result has 89 places, 94 transitions, 503 flow [2024-10-11 14:29:14,044 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} [2024-10-11 14:29:14,044 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2024-10-11 14:29:14,044 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 94 transitions, 503 flow [2024-10-11 14:29:14,045 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) [2024-10-11 14:29:14,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:14,045 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] [2024-10-11 14:29:14,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 14:29:14,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:14,250 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)] === [2024-10-11 14:29:14,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:14,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1977101006, now seen corresponding path program 4 times [2024-10-11 14:29:14,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:14,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769360716] [2024-10-11 14:29:14,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:14,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:14,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:14,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:14,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769360716] [2024-10-11 14:29:14,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769360716] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:14,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318079984] [2024-10-11 14:29:14,653 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:29:14,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:14,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:14,658 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:14,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:29:14,717 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:29:14,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:14,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:29:14,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:14,863 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:29:14,864 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 [2024-10-11 14:29:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:29:14,873 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:29:14,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318079984] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:14,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:29:14,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-11 14:29:14,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123815624] [2024-10-11 14:29:14,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:14,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:29:14,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:14,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:29:14,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-10-11 14:29:14,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 14:29:14,883 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) [2024-10-11 14:29:14,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:14,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 14:29:14,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:16,249 INFO L124 PetriNetUnfolderBase]: 7832/13192 cut-off events. [2024-10-11 14:29:16,250 INFO L125 PetriNetUnfolderBase]: For 11745/11745 co-relation queries the response was YES. [2024-10-11 14:29:16,298 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. [2024-10-11 14:29:16,331 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 99 selfloop transitions, 24 changer transitions 18/169 dead transitions. [2024-10-11 14:29:16,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 169 transitions, 1041 flow [2024-10-11 14:29:16,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:29:16,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:29:16,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 282 transitions. [2024-10-11 14:29:16,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-11 14:29:16,332 INFO L175 Difference]: Start difference. First operand has 89 places, 94 transitions, 503 flow. Second operand 10 states and 282 transitions. [2024-10-11 14:29:16,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 169 transitions, 1041 flow [2024-10-11 14:29:16,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 169 transitions, 1025 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-11 14:29:16,414 INFO L231 Difference]: Finished difference. Result has 100 places, 102 transitions, 626 flow [2024-10-11 14:29:16,414 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} [2024-10-11 14:29:16,415 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 48 predicate places. [2024-10-11 14:29:16,421 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 102 transitions, 626 flow [2024-10-11 14:29:16,421 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) [2024-10-11 14:29:16,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:16,422 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] [2024-10-11 14:29:16,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 14:29:16,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:16,623 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)] === [2024-10-11 14:29:16,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:16,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1027043792, now seen corresponding path program 5 times [2024-10-11 14:29:16,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:16,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448325801] [2024-10-11 14:29:16,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:16,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:17,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:17,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:17,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448325801] [2024-10-11 14:29:17,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448325801] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:17,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830746647] [2024-10-11 14:29:17,009 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:29:17,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:17,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:17,010 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:17,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:29:17,100 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:29:17,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:17,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 14:29:17,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:17,377 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-10-11 14:29:17,378 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 [2024-10-11 14:29:17,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:17,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:17,616 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:29:17,616 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 [2024-10-11 14:29:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:17,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830746647] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:17,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:17,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 22 [2024-10-11 14:29:17,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029525435] [2024-10-11 14:29:17,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:17,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 14:29:17,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:17,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 14:29:17,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2024-10-11 14:29:17,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-10-11 14:29:17,813 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) [2024-10-11 14:29:17,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:17,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-10-11 14:29:17,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:20,923 INFO L124 PetriNetUnfolderBase]: 16947/28740 cut-off events. [2024-10-11 14:29:20,923 INFO L125 PetriNetUnfolderBase]: For 32708/32768 co-relation queries the response was YES. [2024-10-11 14:29:21,161 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. [2024-10-11 14:29:21,204 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 73 selfloop transitions, 9 changer transitions 235/348 dead transitions. [2024-10-11 14:29:21,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 348 transitions, 2598 flow [2024-10-11 14:29:21,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 14:29:21,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 14:29:21,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 482 transitions. [2024-10-11 14:29:21,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6409574468085106 [2024-10-11 14:29:21,206 INFO L175 Difference]: Start difference. First operand has 100 places, 102 transitions, 626 flow. Second operand 16 states and 482 transitions. [2024-10-11 14:29:21,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 348 transitions, 2598 flow [2024-10-11 14:29:21,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 348 transitions, 2414 flow, removed 71 selfloop flow, removed 3 redundant places. [2024-10-11 14:29:21,571 INFO L231 Difference]: Finished difference. Result has 122 places, 103 transitions, 754 flow [2024-10-11 14:29:21,571 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} [2024-10-11 14:29:21,572 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 70 predicate places. [2024-10-11 14:29:21,572 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 103 transitions, 754 flow [2024-10-11 14:29:21,575 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) [2024-10-11 14:29:21,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:21,575 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] [2024-10-11 14:29:21,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 14:29:21,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-11 14:29:21,780 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)] === [2024-10-11 14:29:21,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:21,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1088648126, now seen corresponding path program 6 times [2024-10-11 14:29:21,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:21,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907192671] [2024-10-11 14:29:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:21,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:23,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:23,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:23,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907192671] [2024-10-11 14:29:23,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907192671] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:23,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810728318] [2024-10-11 14:29:23,276 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:29:23,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:23,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:23,278 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:23,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 14:29:23,347 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-11 14:29:23,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:23,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:29:23,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:23,525 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:29:23,526 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 [2024-10-11 14:29:23,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:29:23,533 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:29:23,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810728318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:23,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:29:23,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2024-10-11 14:29:23,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956397916] [2024-10-11 14:29:23,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:23,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:29:23,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:23,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:29:23,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2024-10-11 14:29:23,542 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 14:29:23,542 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) [2024-10-11 14:29:23,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:23,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 14:29:23,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:25,153 INFO L124 PetriNetUnfolderBase]: 8742/14751 cut-off events. [2024-10-11 14:29:25,154 INFO L125 PetriNetUnfolderBase]: For 66440/66440 co-relation queries the response was YES. [2024-10-11 14:29:25,213 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. [2024-10-11 14:29:25,264 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 130 selfloop transitions, 35 changer transitions 7/200 dead transitions. [2024-10-11 14:29:25,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 200 transitions, 1714 flow [2024-10-11 14:29:25,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:29:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:29:25,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 317 transitions. [2024-10-11 14:29:25,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6131528046421664 [2024-10-11 14:29:25,269 INFO L175 Difference]: Start difference. First operand has 122 places, 103 transitions, 754 flow. Second operand 11 states and 317 transitions. [2024-10-11 14:29:25,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 200 transitions, 1714 flow [2024-10-11 14:29:25,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 200 transitions, 1582 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-10-11 14:29:25,469 INFO L231 Difference]: Finished difference. Result has 122 places, 120 transitions, 1017 flow [2024-10-11 14:29:25,469 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} [2024-10-11 14:29:25,470 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 70 predicate places. [2024-10-11 14:29:25,470 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 120 transitions, 1017 flow [2024-10-11 14:29:25,470 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) [2024-10-11 14:29:25,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:25,470 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] [2024-10-11 14:29:25,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 14:29:25,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:25,678 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)] === [2024-10-11 14:29:25,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:25,678 INFO L85 PathProgramCache]: Analyzing trace with hash -2117586246, now seen corresponding path program 7 times [2024-10-11 14:29:25,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:25,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537398681] [2024-10-11 14:29:25,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:25,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:27,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:27,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:27,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537398681] [2024-10-11 14:29:27,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537398681] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:27,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037469145] [2024-10-11 14:29:27,587 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:29:27,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:27,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:27,590 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:27,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 14:29:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:27,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 14:29:27,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:27,848 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:29:27,849 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 [2024-10-11 14:29:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:29:27,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:28,016 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2024-10-11 14:29:28,017 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 [2024-10-11 14:29:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:29:28,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037469145] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:28,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:29:28,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 9] total 25 [2024-10-11 14:29:28,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053631515] [2024-10-11 14:29:28,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:28,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:29:28,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:28,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:29:28,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2024-10-11 14:29:28,107 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 14:29:28,108 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) [2024-10-11 14:29:28,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:28,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 14:29:28,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:30,430 INFO L124 PetriNetUnfolderBase]: 11460/19508 cut-off events. [2024-10-11 14:29:30,431 INFO L125 PetriNetUnfolderBase]: For 76454/76454 co-relation queries the response was YES. [2024-10-11 14:29:30,586 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. [2024-10-11 14:29:30,811 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 197 selfloop transitions, 63 changer transitions 5/293 dead transitions. [2024-10-11 14:29:30,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 293 transitions, 2701 flow [2024-10-11 14:29:30,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 14:29:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 14:29:30,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 498 transitions. [2024-10-11 14:29:30,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.623279098873592 [2024-10-11 14:29:30,813 INFO L175 Difference]: Start difference. First operand has 122 places, 120 transitions, 1017 flow. Second operand 17 states and 498 transitions. [2024-10-11 14:29:30,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 293 transitions, 2701 flow [2024-10-11 14:29:31,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 293 transitions, 2490 flow, removed 101 selfloop flow, removed 1 redundant places. [2024-10-11 14:29:31,181 INFO L231 Difference]: Finished difference. Result has 142 places, 151 transitions, 1480 flow [2024-10-11 14:29:31,181 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} [2024-10-11 14:29:31,181 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 90 predicate places. [2024-10-11 14:29:31,182 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 151 transitions, 1480 flow [2024-10-11 14:29:31,182 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) [2024-10-11 14:29:31,182 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:31,182 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] [2024-10-11 14:29:31,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 14:29:31,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 14:29:31,383 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)] === [2024-10-11 14:29:31,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:31,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1096708916, now seen corresponding path program 8 times [2024-10-11 14:29:31,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:31,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179363652] [2024-10-11 14:29:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:31,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:32,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:32,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:32,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179363652] [2024-10-11 14:29:32,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179363652] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:32,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446539581] [2024-10-11 14:29:32,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:29:32,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:32,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:32,621 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:32,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 14:29:32,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 14:29:32,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:32,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:29:32,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:32,843 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:29:32,843 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 [2024-10-11 14:29:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:29:32,856 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:29:32,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446539581] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:32,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:29:32,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2024-10-11 14:29:32,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405243700] [2024-10-11 14:29:32,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:32,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:29:32,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:32,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:29:32,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2024-10-11 14:29:32,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 14:29:32,875 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) [2024-10-11 14:29:32,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:32,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 14:29:32,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:35,298 INFO L124 PetriNetUnfolderBase]: 11426/19428 cut-off events. [2024-10-11 14:29:35,298 INFO L125 PetriNetUnfolderBase]: For 78537/78537 co-relation queries the response was YES. [2024-10-11 14:29:35,382 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. [2024-10-11 14:29:35,436 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 121 selfloop transitions, 38 changer transitions 34/221 dead transitions. [2024-10-11 14:29:35,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 221 transitions, 2179 flow [2024-10-11 14:29:35,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:29:35,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:29:35,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 290 transitions. [2024-10-11 14:29:35,438 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-10-11 14:29:35,439 INFO L175 Difference]: Start difference. First operand has 142 places, 151 transitions, 1480 flow. Second operand 10 states and 290 transitions. [2024-10-11 14:29:35,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 221 transitions, 2179 flow [2024-10-11 14:29:35,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 221 transitions, 2048 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-10-11 14:29:35,822 INFO L231 Difference]: Finished difference. Result has 149 places, 142 transitions, 1343 flow [2024-10-11 14:29:35,822 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} [2024-10-11 14:29:35,823 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 97 predicate places. [2024-10-11 14:29:35,823 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 142 transitions, 1343 flow [2024-10-11 14:29:35,823 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) [2024-10-11 14:29:35,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:35,823 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] [2024-10-11 14:29:35,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 14:29:36,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:36,024 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)] === [2024-10-11 14:29:36,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:36,024 INFO L85 PathProgramCache]: Analyzing trace with hash -782318092, now seen corresponding path program 9 times [2024-10-11 14:29:36,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:36,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238255288] [2024-10-11 14:29:36,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:36,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:29:36,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:36,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238255288] [2024-10-11 14:29:36,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238255288] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:36,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:29:36,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 14:29:36,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17052823] [2024-10-11 14:29:36,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:36,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:29:36,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:36,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:29:36,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:29:36,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-11 14:29:36,188 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) [2024-10-11 14:29:36,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:36,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-11 14:29:36,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:40,266 INFO L124 PetriNetUnfolderBase]: 23191/37129 cut-off events. [2024-10-11 14:29:40,267 INFO L125 PetriNetUnfolderBase]: For 158091/158497 co-relation queries the response was YES. [2024-10-11 14:29:40,679 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. [2024-10-11 14:29:40,994 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 410 selfloop transitions, 19 changer transitions 28/474 dead transitions. [2024-10-11 14:29:40,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 474 transitions, 5559 flow [2024-10-11 14:29:40,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:29:40,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:29:40,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 302 transitions. [2024-10-11 14:29:40,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5841392649903289 [2024-10-11 14:29:40,996 INFO L175 Difference]: Start difference. First operand has 149 places, 142 transitions, 1343 flow. Second operand 11 states and 302 transitions. [2024-10-11 14:29:40,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 474 transitions, 5559 flow [2024-10-11 14:29:41,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 474 transitions, 5342 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-10-11 14:29:41,635 INFO L231 Difference]: Finished difference. Result has 150 places, 156 transitions, 1431 flow [2024-10-11 14:29:41,635 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} [2024-10-11 14:29:41,636 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 98 predicate places. [2024-10-11 14:29:41,637 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 156 transitions, 1431 flow [2024-10-11 14:29:41,637 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) [2024-10-11 14:29:41,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:41,638 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] [2024-10-11 14:29:41,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 14:29:41,638 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)] === [2024-10-11 14:29:41,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:41,638 INFO L85 PathProgramCache]: Analyzing trace with hash 772484988, now seen corresponding path program 10 times [2024-10-11 14:29:41,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:41,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492748803] [2024-10-11 14:29:41,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:41,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:29:41,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:41,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492748803] [2024-10-11 14:29:41,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492748803] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:41,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:29:41,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:29:41,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887682031] [2024-10-11 14:29:41,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:41,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:29:41,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:41,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:29:41,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:29:41,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 14:29:41,704 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) [2024-10-11 14:29:41,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:41,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 14:29:41,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:44,308 INFO L124 PetriNetUnfolderBase]: 15057/26260 cut-off events. [2024-10-11 14:29:44,308 INFO L125 PetriNetUnfolderBase]: For 108261/108658 co-relation queries the response was YES. [2024-10-11 14:29:44,487 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. [2024-10-11 14:29:44,578 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 120 selfloop transitions, 2 changer transitions 5/177 dead transitions. [2024-10-11 14:29:44,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 177 transitions, 1872 flow [2024-10-11 14:29:44,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:29:44,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:29:44,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-10-11 14:29:44,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-10-11 14:29:44,579 INFO L175 Difference]: Start difference. First operand has 150 places, 156 transitions, 1431 flow. Second operand 3 states and 93 transitions. [2024-10-11 14:29:44,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 177 transitions, 1872 flow [2024-10-11 14:29:45,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 177 transitions, 1866 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-11 14:29:45,176 INFO L231 Difference]: Finished difference. Result has 149 places, 155 transitions, 1424 flow [2024-10-11 14:29:45,176 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} [2024-10-11 14:29:45,177 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 97 predicate places. [2024-10-11 14:29:45,177 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 155 transitions, 1424 flow [2024-10-11 14:29:45,177 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) [2024-10-11 14:29:45,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:45,177 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] [2024-10-11 14:29:45,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 14:29:45,178 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)] === [2024-10-11 14:29:45,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:45,178 INFO L85 PathProgramCache]: Analyzing trace with hash -493662504, now seen corresponding path program 11 times [2024-10-11 14:29:45,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:45,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213873312] [2024-10-11 14:29:45,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:45,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:46,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:46,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213873312] [2024-10-11 14:29:46,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213873312] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:46,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366554421] [2024-10-11 14:29:46,283 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:29:46,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:46,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:46,284 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:46,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 14:29:46,354 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:29:46,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:46,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 14:29:46,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:46,491 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:29:46,491 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 [2024-10-11 14:29:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:29:46,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:46,626 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2024-10-11 14:29:46,626 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 [2024-10-11 14:29:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:29:46,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366554421] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:46,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:29:46,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 9] total 24 [2024-10-11 14:29:46,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284374324] [2024-10-11 14:29:46,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:46,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:29:46,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:46,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:29:46,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2024-10-11 14:29:46,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 14:29:46,814 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) [2024-10-11 14:29:46,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:46,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 14:29:46,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:50,345 INFO L124 PetriNetUnfolderBase]: 17054/29410 cut-off events. [2024-10-11 14:29:50,345 INFO L125 PetriNetUnfolderBase]: For 115419/115527 co-relation queries the response was YES. [2024-10-11 14:29:50,902 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. [2024-10-11 14:29:50,980 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 218 selfloop transitions, 51 changer transitions 1/313 dead transitions. [2024-10-11 14:29:50,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 313 transitions, 2876 flow [2024-10-11 14:29:50,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 14:29:50,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 14:29:50,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 513 transitions. [2024-10-11 14:29:50,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6063829787234043 [2024-10-11 14:29:50,982 INFO L175 Difference]: Start difference. First operand has 149 places, 155 transitions, 1424 flow. Second operand 18 states and 513 transitions. [2024-10-11 14:29:50,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 313 transitions, 2876 flow [2024-10-11 14:29:51,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 313 transitions, 2872 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:29:51,558 INFO L231 Difference]: Finished difference. Result has 168 places, 174 transitions, 1855 flow [2024-10-11 14:29:51,558 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} [2024-10-11 14:29:51,559 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 116 predicate places. [2024-10-11 14:29:51,559 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 174 transitions, 1855 flow [2024-10-11 14:29:51,559 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) [2024-10-11 14:29:51,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:51,559 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:51,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 14:29:51,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 14:29:51,760 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)] === [2024-10-11 14:29:51,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:51,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1905502782, now seen corresponding path program 12 times [2024-10-11 14:29:51,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:51,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198069771] [2024-10-11 14:29:51,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:51,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:52,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:52,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198069771] [2024-10-11 14:29:52,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198069771] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:52,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994112413] [2024-10-11 14:29:52,846 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:29:52,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:52,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:52,848 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:52,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 14:29:52,917 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-11 14:29:52,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:52,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:29:52,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:53,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:29:53,050 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 [2024-10-11 14:29:53,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:29:53,056 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:29:53,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994112413] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:53,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:29:53,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2024-10-11 14:29:53,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676323320] [2024-10-11 14:29:53,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:53,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:29:53,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:53,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:29:53,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-10-11 14:29:53,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 14:29:53,065 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) [2024-10-11 14:29:53,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:53,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 14:29:53,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:57,175 INFO L124 PetriNetUnfolderBase]: 17883/30945 cut-off events. [2024-10-11 14:29:57,175 INFO L125 PetriNetUnfolderBase]: For 137900/138012 co-relation queries the response was YES. [2024-10-11 14:29:57,493 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. [2024-10-11 14:29:57,580 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 174 selfloop transitions, 40 changer transitions 5/262 dead transitions. [2024-10-11 14:29:57,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 262 transitions, 2758 flow [2024-10-11 14:29:57,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:29:57,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:29:57,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 319 transitions. [2024-10-11 14:29:57,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-10-11 14:29:57,584 INFO L175 Difference]: Start difference. First operand has 168 places, 174 transitions, 1855 flow. Second operand 11 states and 319 transitions. [2024-10-11 14:29:57,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 262 transitions, 2758 flow [2024-10-11 14:29:58,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 262 transitions, 2542 flow, removed 86 selfloop flow, removed 7 redundant places. [2024-10-11 14:29:58,913 INFO L231 Difference]: Finished difference. Result has 174 places, 178 transitions, 1787 flow [2024-10-11 14:29:58,914 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} [2024-10-11 14:29:58,914 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 122 predicate places. [2024-10-11 14:29:58,915 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 178 transitions, 1787 flow [2024-10-11 14:29:58,915 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) [2024-10-11 14:29:58,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:58,915 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] [2024-10-11 14:29:58,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 14:29:59,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:59,116 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)] === [2024-10-11 14:29:59,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:59,116 INFO L85 PathProgramCache]: Analyzing trace with hash -380715410, now seen corresponding path program 13 times [2024-10-11 14:29:59,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:59,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001600435] [2024-10-11 14:29:59,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:59,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:00,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:00,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001600435] [2024-10-11 14:30:00,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001600435] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:30:00,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770995427] [2024-10-11 14:30:00,386 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:30:00,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:30:00,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:30:00,387 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:30:00,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 14:30:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:00,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 14:30:00,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:30:00,607 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:30:00,607 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 [2024-10-11 14:30:00,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:30:00,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:30:00,743 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2024-10-11 14:30:00,743 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 [2024-10-11 14:30:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:30:00,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770995427] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:30:00,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:30:00,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14, 9] total 25 [2024-10-11 14:30:00,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724306385] [2024-10-11 14:30:00,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:30:00,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:30:00,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:00,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:30:00,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2024-10-11 14:30:00,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-11 14:30:00,786 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) [2024-10-11 14:30:00,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:00,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-11 14:30:00,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand