./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/popl20-more-multiply-verify.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:42:54,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:42:54,103 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:42:54,106 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:42:54,107 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:42:54,122 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:42:54,123 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:42:54,123 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:42:54,124 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:42:54,125 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:42:54,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:42:54,152 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:42:54,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:42:54,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:42:54,153 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:42:54,154 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:42:54,154 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:42:54,154 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:42:54,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:42:54,157 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:42:54,158 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:42:54,159 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:42:54,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:42:54,160 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:42:54,160 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:42:54,160 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:42:54,162 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:42:54,169 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:42:54,169 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:42:54,169 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:42:54,169 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:42:54,170 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:42:54,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:42:54,170 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:42:54,170 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:42:54,170 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:42:54,170 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:42:54,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:42:54,171 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:42:54,171 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:42:54,171 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:42:54,172 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:42:54,172 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 [2024-11-20 09:42:54,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:42:54,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:42:54,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:42:54,436 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:42:54,436 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:42:54,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-11-20 09:42:55,734 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:42:55,899 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:42:55,900 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-11-20 09:42:55,934 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dce3eb576/f899a24b2d1c4717b4f50eabdf7d4255/FLAGbbd5b96aa [2024-11-20 09:42:55,949 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dce3eb576/f899a24b2d1c4717b4f50eabdf7d4255 [2024-11-20 09:42:55,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:42:55,953 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:42:55,955 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:42:55,955 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:42:55,959 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:42:55,960 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:42:55" (1/1) ... [2024-11-20 09:42:55,961 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48757817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:42:55, skipping insertion in model container [2024-11-20 09:42:55,962 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:42:55" (1/1) ... [2024-11-20 09:42:55,982 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:42:56,176 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c[3081,3094] [2024-11-20 09:42:56,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:42:56,197 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:42:56,224 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c[3081,3094] [2024-11-20 09:42:56,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:42:56,244 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:42:56,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:42:56 WrapperNode [2024-11-20 09:42:56,245 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:42:56,246 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:42:56,246 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:42:56,246 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:42:56,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:42:56" (1/1) ... [2024-11-20 09:42:56,263 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:42:56" (1/1) ... [2024-11-20 09:42:56,286 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 171 [2024-11-20 09:42:56,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:42:56,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:42:56,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:42:56,287 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:42:56,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:42:56" (1/1) ... [2024-11-20 09:42:56,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:42:56" (1/1) ... [2024-11-20 09:42:56,308 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:42:56" (1/1) ... [2024-11-20 09:42:56,330 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-20 09:42:56,331 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:42:56" (1/1) ... [2024-11-20 09:42:56,331 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:42:56" (1/1) ... [2024-11-20 09:42:56,336 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:42:56" (1/1) ... [2024-11-20 09:42:56,339 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:42:56" (1/1) ... [2024-11-20 09:42:56,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:42:56" (1/1) ... [2024-11-20 09:42:56,346 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:42:56" (1/1) ... [2024-11-20 09:42:56,350 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:42:56,351 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:42:56,351 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:42:56,351 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:42:56,351 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:42:56" (1/1) ... [2024-11-20 09:42:56,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:42:56,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:42:56,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 09:42:56,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 09:42:56,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:42:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 09:42:56,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 09:42:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 09:42:56,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 09:42:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 09:42:56,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 09:42:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:42:56,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 09:42:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 09:42:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 09:42:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 09:42:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 09:42:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 09:42:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:42:56,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:42:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 09:42:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 09:42:56,425 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:42:56,519 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:42:56,524 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:42:56,751 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:42:56,752 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:42:56,928 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:42:56,929 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-20 09:42:56,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:42:56 BoogieIcfgContainer [2024-11-20 09:42:56,930 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:42:56,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:42:56,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:42:56,936 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:42:56,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:42:55" (1/3) ... [2024-11-20 09:42:56,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41afb9c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:42:56, skipping insertion in model container [2024-11-20 09:42:56,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:42:56" (2/3) ... [2024-11-20 09:42:56,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41afb9c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:42:56, skipping insertion in model container [2024-11-20 09:42:56,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:42:56" (3/3) ... [2024-11-20 09:42:56,938 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2024-11-20 09:42:56,951 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:42:56,951 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:42:56,951 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:42:57,008 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 09:42:57,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 91 flow [2024-11-20 09:42:57,103 INFO L124 PetriNetUnfolderBase]: 3/32 cut-off events. [2024-11-20 09:42:57,106 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 09:42:57,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 32 events. 3/32 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-20 09:42:57,112 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 35 transitions, 91 flow [2024-11-20 09:42:57,114 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 31 transitions, 80 flow [2024-11-20 09:42:57,135 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:42:57,145 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;@5e498624, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:42:57,145 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-20 09:42:57,170 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:42:57,171 INFO L124 PetriNetUnfolderBase]: 3/30 cut-off events. [2024-11-20 09:42:57,171 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 09:42:57,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:42:57,172 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] [2024-11-20 09:42:57,172 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:42:57,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:42:57,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1962402328, now seen corresponding path program 1 times [2024-11-20 09:42:57,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:42:57,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418978334] [2024-11-20 09:42:57,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:42:57,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:42:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:42:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:42:57,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:42:57,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418978334] [2024-11-20 09:42:57,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418978334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:42:57,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:42:57,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:42:57,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753909502] [2024-11-20 09:42:57,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:42:57,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:42:57,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:42:57,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:42:57,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:42:57,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-11-20 09:42:57,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:42:57,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:42:57,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-11-20 09:42:57,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:42:57,704 INFO L124 PetriNetUnfolderBase]: 350/569 cut-off events. [2024-11-20 09:42:57,704 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-20 09:42:57,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 569 events. 350/569 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2010 event pairs, 118 based on Foata normal form. 15/571 useless extension candidates. Maximal degree in co-relation 1072. Up to 432 conditions per place. [2024-11-20 09:42:57,710 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 35 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-11-20 09:42:57,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 188 flow [2024-11-20 09:42:57,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:42:57,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:42:57,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-11-20 09:42:57,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-11-20 09:42:57,722 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 80 flow. Second operand 3 states and 66 transitions. [2024-11-20 09:42:57,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 188 flow [2024-11-20 09:42:57,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 172 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-20 09:42:57,727 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 87 flow [2024-11-20 09:42:57,728 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-11-20 09:42:57,731 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2024-11-20 09:42:57,731 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 87 flow [2024-11-20 09:42:57,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:42:57,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:42:57,732 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] [2024-11-20 09:42:57,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:42:57,732 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:42:57,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:42:57,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1662219836, now seen corresponding path program 2 times [2024-11-20 09:42:57,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:42:57,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063449441] [2024-11-20 09:42:57,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:42:57,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:42:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:42:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:42:57,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:42:57,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063449441] [2024-11-20 09:42:57,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063449441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:42:57,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:42:57,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:42:57,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512867199] [2024-11-20 09:42:57,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:42:57,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:42:57,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:42:57,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:42:57,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:42:57,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-11-20 09:42:57,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:42:57,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:42:57,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-11-20 09:42:57,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:42:58,090 INFO L124 PetriNetUnfolderBase]: 420/707 cut-off events. [2024-11-20 09:42:58,091 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-11-20 09:42:58,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 707 events. 420/707 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2726 event pairs, 316 based on Foata normal form. 26/710 useless extension candidates. Maximal degree in co-relation 526. Up to 547 conditions per place. [2024-11-20 09:42:58,097 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 26 selfloop transitions, 2 changer transitions 13/47 dead transitions. [2024-11-20 09:42:58,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 200 flow [2024-11-20 09:42:58,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 09:42:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 09:42:58,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-11-20 09:42:58,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-20 09:42:58,099 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 87 flow. Second operand 4 states and 77 transitions. [2024-11-20 09:42:58,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 200 flow [2024-11-20 09:42:58,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:42:58,100 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 100 flow [2024-11-20 09:42:58,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-20 09:42:58,101 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2024-11-20 09:42:58,102 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 100 flow [2024-11-20 09:42:58,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:42:58,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:42:58,103 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] [2024-11-20 09:42:58,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:42:58,103 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:42:58,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:42:58,105 INFO L85 PathProgramCache]: Analyzing trace with hash -388477036, now seen corresponding path program 1 times [2024-11-20 09:42:58,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:42:58,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541796437] [2024-11-20 09:42:58,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:42:58,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:42:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:42:58,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:42:58,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:42:58,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541796437] [2024-11-20 09:42:58,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541796437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:42:58,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:42:58,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:42:58,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194900172] [2024-11-20 09:42:58,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:42:58,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:42:58,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:42:58,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:42:58,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:42:58,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-11-20 09:42:58,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:42:58,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:42:58,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-11-20 09:42:58,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:42:58,303 INFO L124 PetriNetUnfolderBase]: 224/390 cut-off events. [2024-11-20 09:42:58,303 INFO L125 PetriNetUnfolderBase]: For 94/97 co-relation queries the response was YES. [2024-11-20 09:42:58,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 390 events. 224/390 cut-off events. For 94/97 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1296 event pairs, 56 based on Foata normal form. 29/406 useless extension candidates. Maximal degree in co-relation 866. Up to 146 conditions per place. [2024-11-20 09:42:58,306 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 40 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2024-11-20 09:42:58,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 228 flow [2024-11-20 09:42:58,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 09:42:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 09:42:58,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-11-20 09:42:58,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5785714285714286 [2024-11-20 09:42:58,307 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 100 flow. Second operand 4 states and 81 transitions. [2024-11-20 09:42:58,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 228 flow [2024-11-20 09:42:58,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 51 transitions, 220 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-20 09:42:58,309 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 108 flow [2024-11-20 09:42:58,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-11-20 09:42:58,310 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2024-11-20 09:42:58,310 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 108 flow [2024-11-20 09:42:58,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:42:58,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:42:58,310 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] [2024-11-20 09:42:58,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:42:58,311 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:42:58,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:42:58,311 INFO L85 PathProgramCache]: Analyzing trace with hash -2031575406, now seen corresponding path program 2 times [2024-11-20 09:42:58,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:42:58,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219136804] [2024-11-20 09:42:58,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:42:58,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:42:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:42:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:42:58,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:42:58,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219136804] [2024-11-20 09:42:58,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219136804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:42:58,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328340043] [2024-11-20 09:42:58,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:42:58,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:42:58,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:42:58,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:42:58,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 09:42:58,539 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 09:42:58,539 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:42:58,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 09:42:58,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:42:58,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:42:58,773 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:42:58,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328340043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:42:58,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:42:58,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-11-20 09:42:58,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178332066] [2024-11-20 09:42:58,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:42:58,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:42:58,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:42:58,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:42:58,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-20 09:42:58,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:42:58,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 108 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:42:58,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:42:58,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:42:58,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:42:59,101 INFO L124 PetriNetUnfolderBase]: 548/925 cut-off events. [2024-11-20 09:42:59,101 INFO L125 PetriNetUnfolderBase]: For 415/415 co-relation queries the response was YES. [2024-11-20 09:42:59,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2179 conditions, 925 events. 548/925 cut-off events. For 415/415 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4205 event pairs, 131 based on Foata normal form. 1/923 useless extension candidates. Maximal degree in co-relation 2160. Up to 341 conditions per place. [2024-11-20 09:42:59,107 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 62 selfloop transitions, 14 changer transitions 17/97 dead transitions. [2024-11-20 09:42:59,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 97 transitions, 467 flow [2024-11-20 09:42:59,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:42:59,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:42:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-11-20 09:42:59,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5321428571428571 [2024-11-20 09:42:59,111 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 108 flow. Second operand 8 states and 149 transitions. [2024-11-20 09:42:59,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 97 transitions, 467 flow [2024-11-20 09:42:59,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 97 transitions, 447 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-20 09:42:59,115 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 207 flow [2024-11-20 09:42:59,116 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=207, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-11-20 09:42:59,116 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2024-11-20 09:42:59,117 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 207 flow [2024-11-20 09:42:59,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:42:59,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:42:59,118 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] [2024-11-20 09:42:59,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 09:42:59,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:42:59,322 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:42:59,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:42:59,322 INFO L85 PathProgramCache]: Analyzing trace with hash 476846050, now seen corresponding path program 3 times [2024-11-20 09:42:59,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:42:59,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206822031] [2024-11-20 09:42:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:42:59,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:42:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:42:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:42:59,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:42:59,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206822031] [2024-11-20 09:42:59,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206822031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:42:59,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763102852] [2024-11-20 09:42:59,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 09:42:59,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:42:59,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:42:59,436 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:42:59,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 09:42:59,502 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-20 09:42:59,502 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:42:59,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 09:42:59,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:42:59,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:42:59,638 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:42:59,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763102852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:42:59,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:42:59,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-11-20 09:42:59,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240273159] [2024-11-20 09:42:59,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:42:59,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:42:59,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:42:59,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:42:59,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-20 09:42:59,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:42:59,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 207 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:42:59,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:42:59,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:42:59,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:42:59,942 INFO L124 PetriNetUnfolderBase]: 742/1251 cut-off events. [2024-11-20 09:42:59,943 INFO L125 PetriNetUnfolderBase]: For 1228/1233 co-relation queries the response was YES. [2024-11-20 09:42:59,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3595 conditions, 1251 events. 742/1251 cut-off events. For 1228/1233 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6093 event pairs, 185 based on Foata normal form. 6/1255 useless extension candidates. Maximal degree in co-relation 3579. Up to 405 conditions per place. [2024-11-20 09:42:59,950 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 64 selfloop transitions, 21 changer transitions 17/106 dead transitions. [2024-11-20 09:42:59,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 106 transitions, 627 flow [2024-11-20 09:42:59,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:42:59,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:42:59,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-11-20 09:42:59,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-11-20 09:42:59,954 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 207 flow. Second operand 8 states and 148 transitions. [2024-11-20 09:42:59,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 106 transitions, 627 flow [2024-11-20 09:42:59,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 106 transitions, 599 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-20 09:42:59,962 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 355 flow [2024-11-20 09:42:59,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=355, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2024-11-20 09:42:59,963 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2024-11-20 09:42:59,964 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 355 flow [2024-11-20 09:42:59,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:42:59,964 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:42:59,964 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] [2024-11-20 09:42:59,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 09:43:00,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:00,169 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:43:00,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:43:00,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1592852712, now seen corresponding path program 4 times [2024-11-20 09:43:00,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:43:00,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210430846] [2024-11-20 09:43:00,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:00,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:43:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:00,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:00,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:43:00,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210430846] [2024-11-20 09:43:00,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210430846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:43:00,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137703197] [2024-11-20 09:43:00,416 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 09:43:00,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:00,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:43:00,418 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:43:00,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 09:43:00,485 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 09:43:00,485 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:43:00,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 09:43:00,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:43:00,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:00,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:43:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:00,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137703197] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:43:00,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:43:00,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-11-20 09:43:00,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108518095] [2024-11-20 09:43:00,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:43:00,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 09:43:00,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:43:00,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 09:43:00,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-20 09:43:00,599 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-11-20 09:43:00,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 355 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:00,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:43:00,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-11-20 09:43:00,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:43:00,873 INFO L124 PetriNetUnfolderBase]: 1071/1882 cut-off events. [2024-11-20 09:43:00,874 INFO L125 PetriNetUnfolderBase]: For 2867/2875 co-relation queries the response was YES. [2024-11-20 09:43:00,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5843 conditions, 1882 events. 1071/1882 cut-off events. For 2867/2875 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10720 event pairs, 580 based on Foata normal form. 37/1887 useless extension candidates. Maximal degree in co-relation 5823. Up to 868 conditions per place. [2024-11-20 09:43:00,884 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 40 selfloop transitions, 3 changer transitions 39/97 dead transitions. [2024-11-20 09:43:00,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 97 transitions, 731 flow [2024-11-20 09:43:00,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:43:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:43:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-11-20 09:43:00,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-20 09:43:00,886 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 355 flow. Second operand 6 states and 112 transitions. [2024-11-20 09:43:00,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 97 transitions, 731 flow [2024-11-20 09:43:00,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 97 transitions, 719 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-20 09:43:00,894 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 387 flow [2024-11-20 09:43:00,895 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=387, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-20 09:43:00,896 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2024-11-20 09:43:00,896 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 387 flow [2024-11-20 09:43:00,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:00,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:43:00,897 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] [2024-11-20 09:43:00,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 09:43:01,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:01,102 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:43:01,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:43:01,106 INFO L85 PathProgramCache]: Analyzing trace with hash -952130302, now seen corresponding path program 5 times [2024-11-20 09:43:01,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:43:01,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603558323] [2024-11-20 09:43:01,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:01,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:43:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:02,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:02,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:43:02,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603558323] [2024-11-20 09:43:02,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603558323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:43:02,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558691022] [2024-11-20 09:43:02,731 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 09:43:02,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:02,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:43:02,736 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:43:02,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 09:43:02,818 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:43:02,818 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:43:02,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-20 09:43:02,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:43:02,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-20 09:43:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:03,283 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:43:04,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2024-11-20 09:43:04,234 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-20 09:43:04,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 136 treesize of output 134 [2024-11-20 09:43:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:05,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558691022] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:43:05,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:43:05,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2024-11-20 09:43:05,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395854111] [2024-11-20 09:43:05,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:43:05,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-20 09:43:05,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:43:05,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-20 09:43:05,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2024-11-20 09:43:05,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:43:05,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 387 flow. Second operand has 32 states, 32 states have (on average 9.25) internal successors, (296), 32 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:05,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:43:05,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:43:05,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:43:07,728 INFO L124 PetriNetUnfolderBase]: 1801/3075 cut-off events. [2024-11-20 09:43:07,728 INFO L125 PetriNetUnfolderBase]: For 5529/5534 co-relation queries the response was YES. [2024-11-20 09:43:07,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9731 conditions, 3075 events. 1801/3075 cut-off events. For 5529/5534 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17996 event pairs, 626 based on Foata normal form. 5/3073 useless extension candidates. Maximal degree in co-relation 9699. Up to 1070 conditions per place. [2024-11-20 09:43:07,742 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 167 selfloop transitions, 35 changer transitions 22/228 dead transitions. [2024-11-20 09:43:07,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 228 transitions, 1569 flow [2024-11-20 09:43:07,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-20 09:43:07,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-20 09:43:07,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 321 transitions. [2024-11-20 09:43:07,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4585714285714286 [2024-11-20 09:43:07,744 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 387 flow. Second operand 20 states and 321 transitions. [2024-11-20 09:43:07,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 228 transitions, 1569 flow [2024-11-20 09:43:07,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 228 transitions, 1491 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-11-20 09:43:07,755 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 802 flow [2024-11-20 09:43:07,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=802, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2024-11-20 09:43:07,756 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 47 predicate places. [2024-11-20 09:43:07,756 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 802 flow [2024-11-20 09:43:07,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.25) internal successors, (296), 32 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:07,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:43:07,756 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] [2024-11-20 09:43:07,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 09:43:07,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:07,960 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:43:07,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:43:07,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1394521730, now seen corresponding path program 6 times [2024-11-20 09:43:07,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:43:07,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365136750] [2024-11-20 09:43:07,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:07,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:43:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:09,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:09,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:43:09,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365136750] [2024-11-20 09:43:09,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365136750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:43:09,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384632891] [2024-11-20 09:43:09,363 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 09:43:09,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:09,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:43:09,365 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:43:09,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 09:43:09,466 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-20 09:43:09,467 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:43:09,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 09:43:09,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:43:09,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:43:09,619 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:43:09,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384632891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:43:09,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:43:09,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2024-11-20 09:43:09,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346719880] [2024-11-20 09:43:09,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:43:09,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:43:09,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:43:09,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:43:09,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-20 09:43:09,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:43:09,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 802 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:09,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:43:09,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:43:09,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:43:10,018 INFO L124 PetriNetUnfolderBase]: 1920/3308 cut-off events. [2024-11-20 09:43:10,019 INFO L125 PetriNetUnfolderBase]: For 8069/8074 co-relation queries the response was YES. [2024-11-20 09:43:10,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11282 conditions, 3308 events. 1920/3308 cut-off events. For 8069/8074 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 19953 event pairs, 452 based on Foata normal form. 6/3309 useless extension candidates. Maximal degree in co-relation 11236. Up to 1469 conditions per place. [2024-11-20 09:43:10,038 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 87 selfloop transitions, 37 changer transitions 18/146 dead transitions. [2024-11-20 09:43:10,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 146 transitions, 1278 flow [2024-11-20 09:43:10,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:43:10,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:43:10,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-11-20 09:43:10,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-20 09:43:10,039 INFO L175 Difference]: Start difference. First operand has 85 places, 90 transitions, 802 flow. Second operand 8 states and 152 transitions. [2024-11-20 09:43:10,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 146 transitions, 1278 flow [2024-11-20 09:43:10,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 146 transitions, 1224 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-11-20 09:43:10,061 INFO L231 Difference]: Finished difference. Result has 87 places, 92 transitions, 867 flow [2024-11-20 09:43:10,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=867, PETRI_PLACES=87, PETRI_TRANSITIONS=92} [2024-11-20 09:43:10,062 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 49 predicate places. [2024-11-20 09:43:10,062 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 92 transitions, 867 flow [2024-11-20 09:43:10,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:10,062 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:43:10,062 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] [2024-11-20 09:43:10,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 09:43:10,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:10,266 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:43:10,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:43:10,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1632198074, now seen corresponding path program 7 times [2024-11-20 09:43:10,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:43:10,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77633585] [2024-11-20 09:43:10,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:10,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:43:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:11,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:11,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:43:11,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77633585] [2024-11-20 09:43:11,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77633585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:43:11,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480082045] [2024-11-20 09:43:11,334 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 09:43:11,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:11,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:43:11,336 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:43:11,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 09:43:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:11,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-20 09:43:11,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:43:11,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-20 09:43:11,755 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2024-11-20 09:43:11,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 34 [2024-11-20 09:43:11,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:11,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:43:12,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2024-11-20 09:43:12,470 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-20 09:43:12,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 140 treesize of output 138 [2024-11-20 09:43:13,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:13,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480082045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:43:13,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:43:13,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2024-11-20 09:43:13,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952124068] [2024-11-20 09:43:13,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:43:13,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-20 09:43:13,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:43:13,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-20 09:43:13,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2024-11-20 09:43:13,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:43:13,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 92 transitions, 867 flow. Second operand has 30 states, 30 states have (on average 9.4) internal successors, (282), 30 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:13,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:43:13,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:43:13,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:43:17,057 INFO L124 PetriNetUnfolderBase]: 2387/4195 cut-off events. [2024-11-20 09:43:17,057 INFO L125 PetriNetUnfolderBase]: For 11930/11943 co-relation queries the response was YES. [2024-11-20 09:43:17,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14064 conditions, 4195 events. 2387/4195 cut-off events. For 11930/11943 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 26626 event pairs, 828 based on Foata normal form. 14/4207 useless extension candidates. Maximal degree in co-relation 14001. Up to 1201 conditions per place. [2024-11-20 09:43:17,091 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 197 selfloop transitions, 50 changer transitions 18/269 dead transitions. [2024-11-20 09:43:17,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 269 transitions, 2073 flow [2024-11-20 09:43:17,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-20 09:43:17,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-20 09:43:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 373 transitions. [2024-11-20 09:43:17,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4844155844155844 [2024-11-20 09:43:17,093 INFO L175 Difference]: Start difference. First operand has 87 places, 92 transitions, 867 flow. Second operand 22 states and 373 transitions. [2024-11-20 09:43:17,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 269 transitions, 2073 flow [2024-11-20 09:43:17,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 269 transitions, 1981 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-11-20 09:43:17,118 INFO L231 Difference]: Finished difference. Result has 113 places, 117 transitions, 1225 flow [2024-11-20 09:43:17,118 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1225, PETRI_PLACES=113, PETRI_TRANSITIONS=117} [2024-11-20 09:43:17,119 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 75 predicate places. [2024-11-20 09:43:17,119 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 117 transitions, 1225 flow [2024-11-20 09:43:17,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.4) internal successors, (282), 30 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:17,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:43:17,120 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] [2024-11-20 09:43:17,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-20 09:43:17,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:17,321 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:43:17,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:43:17,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1331719358, now seen corresponding path program 8 times [2024-11-20 09:43:17,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:43:17,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109949892] [2024-11-20 09:43:17,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:17,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:43:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:18,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:43:18,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109949892] [2024-11-20 09:43:18,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109949892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:43:18,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327539573] [2024-11-20 09:43:18,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:43:18,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:18,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:43:18,502 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:43:18,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 09:43:18,559 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 09:43:18,559 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:43:18,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 09:43:18,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:43:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:43:18,732 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:43:18,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327539573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:43:18,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:43:18,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2024-11-20 09:43:18,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699652934] [2024-11-20 09:43:18,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:43:18,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:43:18,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:43:18,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:43:18,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2024-11-20 09:43:18,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:43:18,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 117 transitions, 1225 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:18,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:43:18,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:43:18,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:43:19,234 INFO L124 PetriNetUnfolderBase]: 2407/4229 cut-off events. [2024-11-20 09:43:19,234 INFO L125 PetriNetUnfolderBase]: For 16504/16551 co-relation queries the response was YES. [2024-11-20 09:43:19,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15334 conditions, 4229 events. 2407/4229 cut-off events. For 16504/16551 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26784 event pairs, 725 based on Foata normal form. 33/4260 useless extension candidates. Maximal degree in co-relation 15264. Up to 2241 conditions per place. [2024-11-20 09:43:19,254 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 101 selfloop transitions, 41 changer transitions 18/164 dead transitions. [2024-11-20 09:43:19,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 164 transitions, 1723 flow [2024-11-20 09:43:19,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:43:19,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:43:19,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-11-20 09:43:19,256 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5035714285714286 [2024-11-20 09:43:19,256 INFO L175 Difference]: Start difference. First operand has 113 places, 117 transitions, 1225 flow. Second operand 8 states and 141 transitions. [2024-11-20 09:43:19,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 164 transitions, 1723 flow [2024-11-20 09:43:19,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 164 transitions, 1656 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-11-20 09:43:19,299 INFO L231 Difference]: Finished difference. Result has 117 places, 118 transitions, 1278 flow [2024-11-20 09:43:19,299 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1278, PETRI_PLACES=117, PETRI_TRANSITIONS=118} [2024-11-20 09:43:19,300 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 79 predicate places. [2024-11-20 09:43:19,300 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 118 transitions, 1278 flow [2024-11-20 09:43:19,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:19,300 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:43:19,300 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:43:19,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 09:43:19,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:19,501 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:43:19,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:43:19,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1833805908, now seen corresponding path program 9 times [2024-11-20 09:43:19,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:43:19,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935675992] [2024-11-20 09:43:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:19,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:43:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:21,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:43:21,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935675992] [2024-11-20 09:43:21,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935675992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:43:21,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216114495] [2024-11-20 09:43:21,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 09:43:21,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:21,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:43:21,325 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:43:21,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 09:43:21,398 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-20 09:43:21,398 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:43:21,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 09:43:21,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:43:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 09:43:21,635 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:43:21,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216114495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:43:21,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:43:21,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 18 [2024-11-20 09:43:21,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024022397] [2024-11-20 09:43:21,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:43:21,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:43:21,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:43:21,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:43:21,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-20 09:43:21,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:43:21,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 118 transitions, 1278 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:21,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:43:21,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:43:21,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:43:22,142 INFO L124 PetriNetUnfolderBase]: 2377/4175 cut-off events. [2024-11-20 09:43:22,143 INFO L125 PetriNetUnfolderBase]: For 18837/18852 co-relation queries the response was YES. [2024-11-20 09:43:22,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15484 conditions, 4175 events. 2377/4175 cut-off events. For 18837/18852 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 26353 event pairs, 659 based on Foata normal form. 13/4185 useless extension candidates. Maximal degree in co-relation 15411. Up to 2265 conditions per place. [2024-11-20 09:43:22,193 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 113 selfloop transitions, 39 changer transitions 17/173 dead transitions. [2024-11-20 09:43:22,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 173 transitions, 1830 flow [2024-11-20 09:43:22,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:43:22,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:43:22,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-11-20 09:43:22,198 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-20 09:43:22,198 INFO L175 Difference]: Start difference. First operand has 117 places, 118 transitions, 1278 flow. Second operand 8 states and 147 transitions. [2024-11-20 09:43:22,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 173 transitions, 1830 flow [2024-11-20 09:43:22,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 173 transitions, 1744 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-20 09:43:22,268 INFO L231 Difference]: Finished difference. Result has 120 places, 120 transitions, 1325 flow [2024-11-20 09:43:22,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1325, PETRI_PLACES=120, PETRI_TRANSITIONS=120} [2024-11-20 09:43:22,269 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 82 predicate places. [2024-11-20 09:43:22,269 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 120 transitions, 1325 flow [2024-11-20 09:43:22,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:22,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:43:22,269 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:43:22,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-20 09:43:22,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-20 09:43:22,473 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:43:22,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:43:22,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1931691570, now seen corresponding path program 10 times [2024-11-20 09:43:22,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:43:22,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923646562] [2024-11-20 09:43:22,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:22,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:43:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:23,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:23,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:43:23,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923646562] [2024-11-20 09:43:23,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923646562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:43:23,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978354109] [2024-11-20 09:43:23,685 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 09:43:23,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:23,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:43:23,687 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:43:23,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 09:43:23,749 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 09:43:23,749 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:43:23,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-20 09:43:23,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:43:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:43:23,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:43:24,005 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:43:24,005 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 24 [2024-11-20 09:43:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 09:43:24,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978354109] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:43:24,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:43:24,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12, 9] total 25 [2024-11-20 09:43:24,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766164982] [2024-11-20 09:43:24,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:43:24,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:43:24,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:43:24,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:43:24,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2024-11-20 09:43:24,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:43:24,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 120 transitions, 1325 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:24,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:43:24,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:43:24,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:43:24,804 INFO L124 PetriNetUnfolderBase]: 2652/4720 cut-off events. [2024-11-20 09:43:24,804 INFO L125 PetriNetUnfolderBase]: For 20964/21011 co-relation queries the response was YES. [2024-11-20 09:43:24,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17146 conditions, 4720 events. 2652/4720 cut-off events. For 20964/21011 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 30721 event pairs, 745 based on Foata normal form. 48/4766 useless extension candidates. Maximal degree in co-relation 17051. Up to 1385 conditions per place. [2024-11-20 09:43:24,831 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 110 selfloop transitions, 66 changer transitions 23/203 dead transitions. [2024-11-20 09:43:24,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 203 transitions, 2046 flow [2024-11-20 09:43:24,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 09:43:24,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 09:43:24,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-11-20 09:43:24,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-20 09:43:24,835 INFO L175 Difference]: Start difference. First operand has 120 places, 120 transitions, 1325 flow. Second operand 10 states and 190 transitions. [2024-11-20 09:43:24,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 203 transitions, 2046 flow [2024-11-20 09:43:24,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 203 transitions, 1955 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-20 09:43:24,890 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 1480 flow [2024-11-20 09:43:24,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1480, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2024-11-20 09:43:24,890 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 89 predicate places. [2024-11-20 09:43:24,890 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 1480 flow [2024-11-20 09:43:24,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:24,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:43:24,890 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] [2024-11-20 09:43:24,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 09:43:25,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:25,091 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:43:25,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:43:25,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2068844379, now seen corresponding path program 1 times [2024-11-20 09:43:25,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:43:25,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640661905] [2024-11-20 09:43:25,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:25,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:43:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:25,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:43:25,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:43:25,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640661905] [2024-11-20 09:43:25,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640661905] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:43:25,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478929772] [2024-11-20 09:43:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:25,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:25,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:43:25,193 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:43:25,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 09:43:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:25,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 09:43:25,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:43:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:43:25,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:43:25,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:43:25,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478929772] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:43:25,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:43:25,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2024-11-20 09:43:25,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369735049] [2024-11-20 09:43:25,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:43:25,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:43:25,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:43:25,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:43:25,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-20 09:43:25,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:43:25,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 1480 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:25,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:43:25,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:43:25,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:43:25,777 INFO L124 PetriNetUnfolderBase]: 3271/5605 cut-off events. [2024-11-20 09:43:25,777 INFO L125 PetriNetUnfolderBase]: For 25862/25888 co-relation queries the response was YES. [2024-11-20 09:43:25,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20137 conditions, 5605 events. 3271/5605 cut-off events. For 25862/25888 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 35561 event pairs, 904 based on Foata normal form. 15/5048 useless extension candidates. Maximal degree in co-relation 20039. Up to 3251 conditions per place. [2024-11-20 09:43:25,817 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 125 selfloop transitions, 11 changer transitions 0/173 dead transitions. [2024-11-20 09:43:25,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 173 transitions, 2297 flow [2024-11-20 09:43:25,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 09:43:25,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 09:43:25,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-11-20 09:43:25,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2024-11-20 09:43:25,819 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 1480 flow. Second operand 4 states and 83 transitions. [2024-11-20 09:43:25,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 173 transitions, 2297 flow [2024-11-20 09:43:25,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 173 transitions, 2146 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-11-20 09:43:25,901 INFO L231 Difference]: Finished difference. Result has 123 places, 130 transitions, 1464 flow [2024-11-20 09:43:25,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1348, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1464, PETRI_PLACES=123, PETRI_TRANSITIONS=130} [2024-11-20 09:43:25,902 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 85 predicate places. [2024-11-20 09:43:25,902 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 130 transitions, 1464 flow [2024-11-20 09:43:25,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:25,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:43:25,903 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] [2024-11-20 09:43:25,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-20 09:43:26,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-20 09:43:26,105 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:43:26,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:43:26,106 INFO L85 PathProgramCache]: Analyzing trace with hash 142896955, now seen corresponding path program 2 times [2024-11-20 09:43:26,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:43:26,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81930826] [2024-11-20 09:43:26,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:26,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:43:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:26,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:43:26,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:43:26,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81930826] [2024-11-20 09:43:26,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81930826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:43:26,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:43:26,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:43:26,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757771035] [2024-11-20 09:43:26,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:43:26,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:43:26,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:43:26,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:43:26,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:43:26,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:43:26,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 130 transitions, 1464 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:26,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:43:26,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:43:26,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:43:26,641 INFO L124 PetriNetUnfolderBase]: 3324/5828 cut-off events. [2024-11-20 09:43:26,641 INFO L125 PetriNetUnfolderBase]: For 24291/24323 co-relation queries the response was YES. [2024-11-20 09:43:26,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21278 conditions, 5828 events. 3324/5828 cut-off events. For 24291/24323 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 38696 event pairs, 2103 based on Foata normal form. 47/5824 useless extension candidates. Maximal degree in co-relation 20271. Up to 4516 conditions per place. [2024-11-20 09:43:26,676 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 114 selfloop transitions, 21 changer transitions 5/177 dead transitions. [2024-11-20 09:43:26,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 177 transitions, 2110 flow [2024-11-20 09:43:26,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:43:26,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:43:26,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-11-20 09:43:26,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5314285714285715 [2024-11-20 09:43:26,678 INFO L175 Difference]: Start difference. First operand has 123 places, 130 transitions, 1464 flow. Second operand 5 states and 93 transitions. [2024-11-20 09:43:26,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 177 transitions, 2110 flow [2024-11-20 09:43:26,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 177 transitions, 2110 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 09:43:26,753 INFO L231 Difference]: Finished difference. Result has 130 places, 141 transitions, 1637 flow [2024-11-20 09:43:26,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1637, PETRI_PLACES=130, PETRI_TRANSITIONS=141} [2024-11-20 09:43:26,754 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 92 predicate places. [2024-11-20 09:43:26,754 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 141 transitions, 1637 flow [2024-11-20 09:43:26,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:26,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:43:26,754 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] [2024-11-20 09:43:26,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 09:43:26,755 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:43:26,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:43:26,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1339935092, now seen corresponding path program 1 times [2024-11-20 09:43:26,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:43:26,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586580537] [2024-11-20 09:43:26,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:26,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:43:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:43:26,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:43:26,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586580537] [2024-11-20 09:43:26,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586580537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:43:26,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:43:26,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:43:26,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227558321] [2024-11-20 09:43:26,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:43:26,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:43:26,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:43:26,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:43:26,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:43:26,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:43:26,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 141 transitions, 1637 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:26,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:43:26,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:43:26,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:43:27,417 INFO L124 PetriNetUnfolderBase]: 3349/5950 cut-off events. [2024-11-20 09:43:27,418 INFO L125 PetriNetUnfolderBase]: For 28820/28859 co-relation queries the response was YES. [2024-11-20 09:43:27,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23608 conditions, 5950 events. 3349/5950 cut-off events. For 28820/28859 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 40131 event pairs, 1962 based on Foata normal form. 95/5992 useless extension candidates. Maximal degree in co-relation 22839. Up to 4190 conditions per place. [2024-11-20 09:43:27,455 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 117 selfloop transitions, 31 changer transitions 7/190 dead transitions. [2024-11-20 09:43:27,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 190 transitions, 2439 flow [2024-11-20 09:43:27,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:43:27,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:43:27,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-11-20 09:43:27,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5371428571428571 [2024-11-20 09:43:27,457 INFO L175 Difference]: Start difference. First operand has 130 places, 141 transitions, 1637 flow. Second operand 5 states and 94 transitions. [2024-11-20 09:43:27,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 190 transitions, 2439 flow [2024-11-20 09:43:27,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 190 transitions, 2406 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-20 09:43:27,533 INFO L231 Difference]: Finished difference. Result has 136 places, 144 transitions, 1745 flow [2024-11-20 09:43:27,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1745, PETRI_PLACES=136, PETRI_TRANSITIONS=144} [2024-11-20 09:43:27,534 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 98 predicate places. [2024-11-20 09:43:27,534 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 144 transitions, 1745 flow [2024-11-20 09:43:27,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:27,535 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:43:27,535 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] [2024-11-20 09:43:27,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 09:43:27,535 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:43:27,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:43:27,535 INFO L85 PathProgramCache]: Analyzing trace with hash -344117236, now seen corresponding path program 2 times [2024-11-20 09:43:27,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:43:27,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275845071] [2024-11-20 09:43:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:27,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:43:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:27,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:43:27,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:43:27,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275845071] [2024-11-20 09:43:27,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275845071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:43:27,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:43:27,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:43:27,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392216028] [2024-11-20 09:43:27,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:43:27,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:43:27,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:43:27,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:43:27,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:43:27,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:43:27,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 144 transitions, 1745 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:27,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:43:27,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:43:27,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:43:28,238 INFO L124 PetriNetUnfolderBase]: 3453/6149 cut-off events. [2024-11-20 09:43:28,239 INFO L125 PetriNetUnfolderBase]: For 33905/33927 co-relation queries the response was YES. [2024-11-20 09:43:28,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26493 conditions, 6149 events. 3453/6149 cut-off events. For 33905/33927 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 41722 event pairs, 778 based on Foata normal form. 57/6169 useless extension candidates. Maximal degree in co-relation 25725. Up to 3578 conditions per place. [2024-11-20 09:43:28,279 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 139 selfloop transitions, 35 changer transitions 4/213 dead transitions. [2024-11-20 09:43:28,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 213 transitions, 2775 flow [2024-11-20 09:43:28,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:43:28,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:43:28,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-11-20 09:43:28,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-11-20 09:43:28,282 INFO L175 Difference]: Start difference. First operand has 136 places, 144 transitions, 1745 flow. Second operand 7 states and 130 transitions. [2024-11-20 09:43:28,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 213 transitions, 2775 flow [2024-11-20 09:43:28,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 213 transitions, 2765 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-20 09:43:28,364 INFO L231 Difference]: Finished difference. Result has 142 places, 147 transitions, 1875 flow [2024-11-20 09:43:28,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1735, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1875, PETRI_PLACES=142, PETRI_TRANSITIONS=147} [2024-11-20 09:43:28,365 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 104 predicate places. [2024-11-20 09:43:28,366 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 147 transitions, 1875 flow [2024-11-20 09:43:28,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:28,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:43:28,366 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] [2024-11-20 09:43:28,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 09:43:28,366 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:43:28,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:43:28,366 INFO L85 PathProgramCache]: Analyzing trace with hash 747233996, now seen corresponding path program 3 times [2024-11-20 09:43:28,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:43:28,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196890282] [2024-11-20 09:43:28,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:28,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:43:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:43:28,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:43:28,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196890282] [2024-11-20 09:43:28,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196890282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:43:28,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:43:28,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:43:28,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624167952] [2024-11-20 09:43:28,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:43:28,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:43:28,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:43:28,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:43:28,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:43:28,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:43:28,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 147 transitions, 1875 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:28,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:43:28,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:43:28,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:43:29,068 INFO L124 PetriNetUnfolderBase]: 3440/6153 cut-off events. [2024-11-20 09:43:29,068 INFO L125 PetriNetUnfolderBase]: For 40211/40297 co-relation queries the response was YES. [2024-11-20 09:43:29,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26974 conditions, 6153 events. 3440/6153 cut-off events. For 40211/40297 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 42005 event pairs, 1536 based on Foata normal form. 210/6290 useless extension candidates. Maximal degree in co-relation 26372. Up to 3119 conditions per place. [2024-11-20 09:43:29,109 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 123 selfloop transitions, 20 changer transitions 19/195 dead transitions. [2024-11-20 09:43:29,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 195 transitions, 2566 flow [2024-11-20 09:43:29,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:43:29,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:43:29,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-11-20 09:43:29,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5885714285714285 [2024-11-20 09:43:29,110 INFO L175 Difference]: Start difference. First operand has 142 places, 147 transitions, 1875 flow. Second operand 5 states and 103 transitions. [2024-11-20 09:43:29,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 195 transitions, 2566 flow [2024-11-20 09:43:29,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 195 transitions, 2481 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-11-20 09:43:29,210 INFO L231 Difference]: Finished difference. Result has 142 places, 140 transitions, 1730 flow [2024-11-20 09:43:29,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1730, PETRI_PLACES=142, PETRI_TRANSITIONS=140} [2024-11-20 09:43:29,211 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 104 predicate places. [2024-11-20 09:43:29,211 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 140 transitions, 1730 flow [2024-11-20 09:43:29,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:29,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:43:29,211 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] [2024-11-20 09:43:29,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 09:43:29,212 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:43:29,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:43:29,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2008831494, now seen corresponding path program 4 times [2024-11-20 09:43:29,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:43:29,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825561674] [2024-11-20 09:43:29,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:29,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:43:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:43:29,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:43:29,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825561674] [2024-11-20 09:43:29,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825561674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:43:29,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82433341] [2024-11-20 09:43:29,289 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 09:43:29,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:29,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:43:29,291 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:43:29,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 09:43:29,352 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 09:43:29,353 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:43:29,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 09:43:29,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:43:29,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:43:29,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:43:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:43:29,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82433341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:43:29,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:43:29,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-20 09:43:29,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094624898] [2024-11-20 09:43:29,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:43:29,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 09:43:29,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:43:29,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 09:43:29,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-20 09:43:29,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:43:29,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 140 transitions, 1730 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:29,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:43:29,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:43:29,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:43:29,966 INFO L124 PetriNetUnfolderBase]: 2822/5074 cut-off events. [2024-11-20 09:43:29,966 INFO L125 PetriNetUnfolderBase]: For 32011/32059 co-relation queries the response was YES. [2024-11-20 09:43:29,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22499 conditions, 5074 events. 2822/5074 cut-off events. For 32011/32059 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 33637 event pairs, 1326 based on Foata normal form. 95/5126 useless extension candidates. Maximal degree in co-relation 21702. Up to 3078 conditions per place. [2024-11-20 09:43:30,001 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 121 selfloop transitions, 35 changer transitions 10/195 dead transitions. [2024-11-20 09:43:30,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 195 transitions, 2502 flow [2024-11-20 09:43:30,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:43:30,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:43:30,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-11-20 09:43:30,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-11-20 09:43:30,002 INFO L175 Difference]: Start difference. First operand has 142 places, 140 transitions, 1730 flow. Second operand 7 states and 128 transitions. [2024-11-20 09:43:30,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 195 transitions, 2502 flow [2024-11-20 09:43:30,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 195 transitions, 2412 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-11-20 09:43:30,069 INFO L231 Difference]: Finished difference. Result has 138 places, 130 transitions, 1603 flow [2024-11-20 09:43:30,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1603, PETRI_PLACES=138, PETRI_TRANSITIONS=130} [2024-11-20 09:43:30,069 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 100 predicate places. [2024-11-20 09:43:30,070 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 130 transitions, 1603 flow [2024-11-20 09:43:30,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:30,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:43:30,070 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] [2024-11-20 09:43:30,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 09:43:30,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-20 09:43:30,271 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:43:30,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:43:30,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1608642223, now seen corresponding path program 3 times [2024-11-20 09:43:30,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:43:30,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697187228] [2024-11-20 09:43:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:30,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:43:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:30,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:43:30,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:43:30,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697187228] [2024-11-20 09:43:30,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697187228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:43:30,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:43:30,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:43:30,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246038188] [2024-11-20 09:43:30,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:43:30,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:43:30,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:43:30,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:43:30,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:43:30,363 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:43:30,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 130 transitions, 1603 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:30,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:43:30,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:43:30,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:43:30,708 INFO L124 PetriNetUnfolderBase]: 2068/3694 cut-off events. [2024-11-20 09:43:30,708 INFO L125 PetriNetUnfolderBase]: For 26581/26601 co-relation queries the response was YES. [2024-11-20 09:43:30,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17484 conditions, 3694 events. 2068/3694 cut-off events. For 26581/26601 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 22332 event pairs, 984 based on Foata normal form. 80/3732 useless extension candidates. Maximal degree in co-relation 17434. Up to 2256 conditions per place. [2024-11-20 09:43:30,780 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 85 selfloop transitions, 16 changer transitions 19/143 dead transitions. [2024-11-20 09:43:30,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 143 transitions, 1903 flow [2024-11-20 09:43:30,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:43:30,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:43:30,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-11-20 09:43:30,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5028571428571429 [2024-11-20 09:43:30,781 INFO L175 Difference]: Start difference. First operand has 138 places, 130 transitions, 1603 flow. Second operand 5 states and 88 transitions. [2024-11-20 09:43:30,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 143 transitions, 1903 flow [2024-11-20 09:43:30,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 143 transitions, 1817 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-11-20 09:43:30,831 INFO L231 Difference]: Finished difference. Result has 130 places, 110 transitions, 1321 flow [2024-11-20 09:43:30,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1321, PETRI_PLACES=130, PETRI_TRANSITIONS=110} [2024-11-20 09:43:30,831 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 92 predicate places. [2024-11-20 09:43:30,832 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 110 transitions, 1321 flow [2024-11-20 09:43:30,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:30,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:43:30,832 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] [2024-11-20 09:43:30,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-20 09:43:30,832 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:43:30,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:43:30,833 INFO L85 PathProgramCache]: Analyzing trace with hash 786915149, now seen corresponding path program 1 times [2024-11-20 09:43:30,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:43:30,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883678189] [2024-11-20 09:43:30,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:30,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:43:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:32,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:43:32,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883678189] [2024-11-20 09:43:32,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883678189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:43:32,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721760735] [2024-11-20 09:43:32,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:32,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:32,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:43:32,123 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:43:32,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 09:43:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:32,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-20 09:43:32,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:43:32,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 09:43:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:32,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:43:33,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 69 [2024-11-20 09:43:33,629 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-20 09:43:33,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 157 treesize of output 143 [2024-11-20 09:43:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:34,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721760735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:43:34,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:43:34,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-11-20 09:43:34,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288595709] [2024-11-20 09:43:34,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:43:34,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-20 09:43:34,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:43:34,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-20 09:43:34,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1111, Unknown=0, NotChecked=0, Total=1332 [2024-11-20 09:43:34,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:43:34,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 110 transitions, 1321 flow. Second operand has 37 states, 37 states have (on average 9.27027027027027) internal successors, (343), 37 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:34,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:43:34,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:43:34,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:43:38,010 INFO L124 PetriNetUnfolderBase]: 2585/4585 cut-off events. [2024-11-20 09:43:38,011 INFO L125 PetriNetUnfolderBase]: For 28724/28771 co-relation queries the response was YES. [2024-11-20 09:43:38,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21103 conditions, 4585 events. 2585/4585 cut-off events. For 28724/28771 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 28691 event pairs, 906 based on Foata normal form. 36/4586 useless extension candidates. Maximal degree in co-relation 21056. Up to 1408 conditions per place. [2024-11-20 09:43:38,043 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 199 selfloop transitions, 53 changer transitions 44/312 dead transitions. [2024-11-20 09:43:38,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 312 transitions, 3051 flow [2024-11-20 09:43:38,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-20 09:43:38,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-20 09:43:38,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 426 transitions. [2024-11-20 09:43:38,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4507936507936508 [2024-11-20 09:43:38,045 INFO L175 Difference]: Start difference. First operand has 130 places, 110 transitions, 1321 flow. Second operand 27 states and 426 transitions. [2024-11-20 09:43:38,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 312 transitions, 3051 flow [2024-11-20 09:43:38,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 312 transitions, 2979 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-20 09:43:38,097 INFO L231 Difference]: Finished difference. Result has 152 places, 136 transitions, 1714 flow [2024-11-20 09:43:38,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1714, PETRI_PLACES=152, PETRI_TRANSITIONS=136} [2024-11-20 09:43:38,098 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 114 predicate places. [2024-11-20 09:43:38,098 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 136 transitions, 1714 flow [2024-11-20 09:43:38,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 9.27027027027027) internal successors, (343), 37 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:38,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:43:38,099 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] [2024-11-20 09:43:38,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-20 09:43:38,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:38,303 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:43:38,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:43:38,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1984748315, now seen corresponding path program 2 times [2024-11-20 09:43:38,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:43:38,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135495274] [2024-11-20 09:43:38,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:38,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:43:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:40,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:40,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:43:40,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135495274] [2024-11-20 09:43:40,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135495274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:43:40,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20623710] [2024-11-20 09:43:40,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:43:40,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:40,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:43:40,822 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:43:40,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 09:43:40,916 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:43:40,916 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:43:40,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-20 09:43:40,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:43:40,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 09:43:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:41,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:43:42,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 70 [2024-11-20 09:43:42,520 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-20 09:43:42,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 138 [2024-11-20 09:43:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:42,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20623710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:43:42,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:43:42,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2024-11-20 09:43:42,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358788882] [2024-11-20 09:43:42,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:43:42,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-20 09:43:42,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:43:42,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-20 09:43:42,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1023, Unknown=0, NotChecked=0, Total=1190 [2024-11-20 09:43:42,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:43:42,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 136 transitions, 1714 flow. Second operand has 35 states, 35 states have (on average 9.4) internal successors, (329), 35 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:42,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:43:42,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:43:42,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:43:52,231 INFO L124 PetriNetUnfolderBase]: 5585/9758 cut-off events. [2024-11-20 09:43:52,232 INFO L125 PetriNetUnfolderBase]: For 70741/70823 co-relation queries the response was YES. [2024-11-20 09:43:52,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49004 conditions, 9758 events. 5585/9758 cut-off events. For 70741/70823 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 70152 event pairs, 1141 based on Foata normal form. 60/9785 useless extension candidates. Maximal degree in co-relation 48951. Up to 1443 conditions per place. [2024-11-20 09:43:52,309 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 394 selfloop transitions, 156 changer transitions 36/602 dead transitions. [2024-11-20 09:43:52,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 602 transitions, 6472 flow [2024-11-20 09:43:52,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-20 09:43:52,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-20 09:43:52,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 780 transitions. [2024-11-20 09:43:52,312 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-20 09:43:52,312 INFO L175 Difference]: Start difference. First operand has 152 places, 136 transitions, 1714 flow. Second operand 48 states and 780 transitions. [2024-11-20 09:43:52,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 602 transitions, 6472 flow [2024-11-20 09:43:52,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 602 transitions, 6244 flow, removed 76 selfloop flow, removed 14 redundant places. [2024-11-20 09:43:52,531 INFO L231 Difference]: Finished difference. Result has 197 places, 249 transitions, 3671 flow [2024-11-20 09:43:52,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=3671, PETRI_PLACES=197, PETRI_TRANSITIONS=249} [2024-11-20 09:43:52,532 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 159 predicate places. [2024-11-20 09:43:52,532 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 249 transitions, 3671 flow [2024-11-20 09:43:52,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.4) internal successors, (329), 35 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:52,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:43:52,532 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] [2024-11-20 09:43:52,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-20 09:43:52,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-20 09:43:52,734 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:43:52,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:43:52,734 INFO L85 PathProgramCache]: Analyzing trace with hash -866415199, now seen corresponding path program 3 times [2024-11-20 09:43:52,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:43:52,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641423849] [2024-11-20 09:43:52,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:43:52,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:43:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:43:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:54,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:43:54,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641423849] [2024-11-20 09:43:54,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641423849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:43:54,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664742845] [2024-11-20 09:43:54,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 09:43:54,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:43:54,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:43:54,126 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:43:54,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 09:43:54,216 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 09:43:54,217 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:43:54,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-20 09:43:54,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:43:54,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-20 09:43:54,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:54,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:43:55,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 69 [2024-11-20 09:43:55,687 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-20 09:43:55,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 157 treesize of output 143 [2024-11-20 09:43:56,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:43:56,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664742845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:43:56,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:43:56,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-11-20 09:43:56,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807105697] [2024-11-20 09:43:56,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:43:56,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-20 09:43:56,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:43:56,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-20 09:43:56,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1207, Unknown=0, NotChecked=0, Total=1406 [2024-11-20 09:43:56,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:43:56,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 249 transitions, 3671 flow. Second operand has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:43:56,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:43:56,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:43:56,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:44:00,218 INFO L124 PetriNetUnfolderBase]: 5806/10183 cut-off events. [2024-11-20 09:44:00,218 INFO L125 PetriNetUnfolderBase]: For 90108/90202 co-relation queries the response was YES. [2024-11-20 09:44:00,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53933 conditions, 10183 events. 5806/10183 cut-off events. For 90108/90202 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 74240 event pairs, 2385 based on Foata normal form. 78/10182 useless extension candidates. Maximal degree in co-relation 53867. Up to 4660 conditions per place. [2024-11-20 09:44:00,295 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 294 selfloop transitions, 59 changer transitions 17/386 dead transitions. [2024-11-20 09:44:00,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 386 transitions, 5206 flow [2024-11-20 09:44:00,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-20 09:44:00,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-20 09:44:00,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 295 transitions. [2024-11-20 09:44:00,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-11-20 09:44:00,297 INFO L175 Difference]: Start difference. First operand has 197 places, 249 transitions, 3671 flow. Second operand 18 states and 295 transitions. [2024-11-20 09:44:00,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 386 transitions, 5206 flow [2024-11-20 09:44:00,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 386 transitions, 4567 flow, removed 260 selfloop flow, removed 18 redundant places. [2024-11-20 09:44:00,681 INFO L231 Difference]: Finished difference. Result has 197 places, 257 transitions, 3346 flow [2024-11-20 09:44:00,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3084, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3346, PETRI_PLACES=197, PETRI_TRANSITIONS=257} [2024-11-20 09:44:00,682 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 159 predicate places. [2024-11-20 09:44:00,682 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 257 transitions, 3346 flow [2024-11-20 09:44:00,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:44:00,683 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:44:00,683 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] [2024-11-20 09:44:00,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-20 09:44:00,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:44:00,885 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:44:00,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:44:00,885 INFO L85 PathProgramCache]: Analyzing trace with hash -440745403, now seen corresponding path program 4 times [2024-11-20 09:44:00,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:44:00,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503925158] [2024-11-20 09:44:00,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:44:00,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:44:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:44:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:44:02,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:44:02,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503925158] [2024-11-20 09:44:02,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503925158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:44:02,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055166672] [2024-11-20 09:44:02,915 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 09:44:02,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:44:02,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:44:02,917 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:44:02,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 09:44:02,989 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 09:44:02,989 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:44:02,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-20 09:44:02,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:44:03,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 09:44:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:44:03,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:44:04,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 70 [2024-11-20 09:44:04,188 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-20 09:44:04,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 171 treesize of output 142 [2024-11-20 09:44:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:44:04,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055166672] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:44:04,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:44:04,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-11-20 09:44:04,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738078490] [2024-11-20 09:44:04,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:44:04,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-20 09:44:04,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:44:04,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-20 09:44:04,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1141, Unknown=0, NotChecked=0, Total=1332 [2024-11-20 09:44:04,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:44:04,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 257 transitions, 3346 flow. Second operand has 37 states, 37 states have (on average 9.27027027027027) internal successors, (343), 37 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:44:04,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:44:04,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:44:04,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:44:10,685 INFO L124 PetriNetUnfolderBase]: 6167/10874 cut-off events. [2024-11-20 09:44:10,686 INFO L125 PetriNetUnfolderBase]: For 72263/72337 co-relation queries the response was YES. [2024-11-20 09:44:10,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52333 conditions, 10874 events. 6167/10874 cut-off events. For 72263/72337 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 80156 event pairs, 1337 based on Foata normal form. 60/10901 useless extension candidates. Maximal degree in co-relation 52271. Up to 1607 conditions per place. [2024-11-20 09:44:10,790 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 415 selfloop transitions, 154 changer transitions 54/639 dead transitions. [2024-11-20 09:44:10,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 639 transitions, 6743 flow [2024-11-20 09:44:10,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-20 09:44:10,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-11-20 09:44:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 813 transitions. [2024-11-20 09:44:10,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45546218487394957 [2024-11-20 09:44:10,793 INFO L175 Difference]: Start difference. First operand has 197 places, 257 transitions, 3346 flow. Second operand 51 states and 813 transitions. [2024-11-20 09:44:10,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 639 transitions, 6743 flow [2024-11-20 09:44:11,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 639 transitions, 6652 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-11-20 09:44:11,110 INFO L231 Difference]: Finished difference. Result has 245 places, 269 transitions, 3731 flow [2024-11-20 09:44:11,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3271, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=3731, PETRI_PLACES=245, PETRI_TRANSITIONS=269} [2024-11-20 09:44:11,110 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 207 predicate places. [2024-11-20 09:44:11,110 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 269 transitions, 3731 flow [2024-11-20 09:44:11,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 9.27027027027027) internal successors, (343), 37 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:44:11,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:44:11,111 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] [2024-11-20 09:44:11,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-20 09:44:11,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:44:11,312 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:44:11,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:44:11,312 INFO L85 PathProgramCache]: Analyzing trace with hash 534286645, now seen corresponding path program 5 times [2024-11-20 09:44:11,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:44:11,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992488059] [2024-11-20 09:44:11,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:44:11,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:44:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:44:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:44:12,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:44:12,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992488059] [2024-11-20 09:44:12,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992488059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:44:12,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287733488] [2024-11-20 09:44:12,969 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 09:44:12,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:44:12,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:44:12,971 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:44:12,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-20 09:44:13,038 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:44:13,038 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:44:13,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-20 09:44:13,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:44:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:44:13,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:44:13,418 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:44:13,418 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 62 [2024-11-20 09:44:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:44:13,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287733488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:44:13,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:44:13,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 28 [2024-11-20 09:44:13,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731533955] [2024-11-20 09:44:13,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:44:13,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-20 09:44:13,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:44:13,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-20 09:44:13,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2024-11-20 09:44:13,710 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:44:13,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 269 transitions, 3731 flow. Second operand has 29 states, 29 states have (on average 9.517241379310345) internal successors, (276), 29 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:44:13,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:44:13,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:44:13,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:44:16,612 INFO L124 PetriNetUnfolderBase]: 6497/11438 cut-off events. [2024-11-20 09:44:16,612 INFO L125 PetriNetUnfolderBase]: For 84033/84117 co-relation queries the response was YES. [2024-11-20 09:44:16,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57284 conditions, 11438 events. 6497/11438 cut-off events. For 84033/84117 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 85378 event pairs, 1281 based on Foata normal form. 70/11454 useless extension candidates. Maximal degree in co-relation 57214. Up to 1536 conditions per place. [2024-11-20 09:44:16,737 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 259 selfloop transitions, 149 changer transitions 40/464 dead transitions. [2024-11-20 09:44:16,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 464 transitions, 5767 flow [2024-11-20 09:44:16,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-20 09:44:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-20 09:44:16,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 418 transitions. [2024-11-20 09:44:16,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4593406593406593 [2024-11-20 09:44:16,738 INFO L175 Difference]: Start difference. First operand has 245 places, 269 transitions, 3731 flow. Second operand 26 states and 418 transitions. [2024-11-20 09:44:16,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 464 transitions, 5767 flow [2024-11-20 09:44:17,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 464 transitions, 5454 flow, removed 32 selfloop flow, removed 39 redundant places. [2024-11-20 09:44:17,092 INFO L231 Difference]: Finished difference. Result has 236 places, 286 transitions, 4090 flow [2024-11-20 09:44:17,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3446, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4090, PETRI_PLACES=236, PETRI_TRANSITIONS=286} [2024-11-20 09:44:17,094 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 198 predicate places. [2024-11-20 09:44:17,094 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 286 transitions, 4090 flow [2024-11-20 09:44:17,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.517241379310345) internal successors, (276), 29 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:44:17,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:44:17,094 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] [2024-11-20 09:44:17,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-20 09:44:17,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-20 09:44:17,299 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:44:17,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:44:17,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1140571897, now seen corresponding path program 6 times [2024-11-20 09:44:17,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:44:17,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763209087] [2024-11-20 09:44:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:44:17,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:44:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:44:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:44:18,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:44:18,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763209087] [2024-11-20 09:44:18,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763209087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:44:18,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545663867] [2024-11-20 09:44:18,478 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 09:44:18,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:44:18,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:44:18,480 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:44:18,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-20 09:44:18,578 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-20 09:44:18,579 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:44:18,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-20 09:44:18,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:44:18,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-20 09:44:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:44:18,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:44:20,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2024-11-20 09:44:20,723 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-20 09:44:20,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 178 treesize of output 164 [2024-11-20 09:44:22,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:44:22,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545663867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:44:22,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:44:22,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-11-20 09:44:22,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273875570] [2024-11-20 09:44:22,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:44:22,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-20 09:44:22,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:44:22,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-20 09:44:22,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1195, Unknown=0, NotChecked=0, Total=1406 [2024-11-20 09:44:22,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-20 09:44:22,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 286 transitions, 4090 flow. Second operand has 38 states, 38 states have (on average 9.210526315789474) internal successors, (350), 38 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:44:22,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:44:22,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-20 09:44:22,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand