./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/weaver/popl20-bad-ring.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 be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:48:36,066 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:48:36,129 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:48:36,133 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:48:36,134 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:48:36,160 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:48:36,160 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:48:36,161 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:48:36,161 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:48:36,164 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:48:36,164 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:48:36,165 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:48:36,165 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:48:36,165 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:48:36,166 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:48:36,166 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:48:36,166 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:48:36,166 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:48:36,166 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:48:36,167 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:48:36,168 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:48:36,168 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:48:36,168 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:48:36,168 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:48:36,169 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:48:36,169 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:48:36,169 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:48:36,169 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:48:36,169 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:48:36,170 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:48:36,170 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:48:36,170 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:48:36,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:48:36,171 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:48:36,171 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:48:36,171 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:48:36,172 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:48:36,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:48:36,172 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:48:36,173 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:48:36,173 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:48:36,173 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:48:36,173 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe [2024-11-22 13:48:36,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:48:36,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:48:36,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:48:36,417 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:48:36,417 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:48:36,418 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-11-22 13:48:37,728 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:48:37,910 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:48:37,910 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-11-22 13:48:37,918 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/649d9f02e/588a7607daad419cae79f23b3a0ab9ce/FLAGb3d4c22dd [2024-11-22 13:48:38,305 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/649d9f02e/588a7607daad419cae79f23b3a0ab9ce [2024-11-22 13:48:38,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:48:38,308 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:48:38,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:48:38,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:48:38,317 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:48:38,318 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:48:38" (1/1) ... [2024-11-22 13:48:38,319 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d5e8485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:38, skipping insertion in model container [2024-11-22 13:48:38,319 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:48:38" (1/1) ... [2024-11-22 13:48:38,344 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:48:38,558 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-bad-ring.wvr.c[3986,3999] [2024-11-22 13:48:38,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:48:38,598 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:48:38,634 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-bad-ring.wvr.c[3986,3999] [2024-11-22 13:48:38,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:48:38,678 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:48:38,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:38 WrapperNode [2024-11-22 13:48:38,678 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:48:38,689 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:48:38,689 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:48:38,690 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:48:38,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:38" (1/1) ... [2024-11-22 13:48:38,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:38" (1/1) ... [2024-11-22 13:48:38,766 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 312 [2024-11-22 13:48:38,766 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:48:38,767 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:48:38,767 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:48:38,767 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:48:38,780 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:38" (1/1) ... [2024-11-22 13:48:38,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:38" (1/1) ... [2024-11-22 13:48:38,783 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:38" (1/1) ... [2024-11-22 13:48:38,823 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-22 13:48:38,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:38" (1/1) ... [2024-11-22 13:48:38,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:38" (1/1) ... [2024-11-22 13:48:38,856 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:38" (1/1) ... [2024-11-22 13:48:38,864 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:38" (1/1) ... [2024-11-22 13:48:38,870 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:38" (1/1) ... [2024-11-22 13:48:38,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:38" (1/1) ... [2024-11-22 13:48:38,884 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:48:38,889 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:48:38,889 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:48:38,889 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:48:38,890 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:38" (1/1) ... [2024-11-22 13:48:38,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:48:38,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:48:38,930 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) [2024-11-22 13:48:38,933 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 [2024-11-22 13:48:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:48:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 13:48:38,997 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 13:48:38,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 13:48:38,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 13:48:38,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 13:48:38,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 13:48:38,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:48:38,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:48:38,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:48:38,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:48:38,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 13:48:38,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 13:48:38,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 13:48:38,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:48:39,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:48:39,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:48:39,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:48:39,002 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:48:39,124 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:48:39,126 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:48:39,510 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:48:39,510 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:48:39,824 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:48:39,824 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-22 13:48:39,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:48:39 BoogieIcfgContainer [2024-11-22 13:48:39,825 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:48:39,826 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:48:39,826 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:48:39,829 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:48:39,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:48:38" (1/3) ... [2024-11-22 13:48:39,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7b89a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:48:39, skipping insertion in model container [2024-11-22 13:48:39,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:48:38" (2/3) ... [2024-11-22 13:48:39,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7b89a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:48:39, skipping insertion in model container [2024-11-22 13:48:39,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:48:39" (3/3) ... [2024-11-22 13:48:39,833 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2024-11-22 13:48:39,848 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:48:39,849 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:48:39,849 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:48:39,896 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 13:48:39,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 117 flow [2024-11-22 13:48:39,955 INFO L124 PetriNetUnfolderBase]: 8/45 cut-off events. [2024-11-22 13:48:39,955 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:48:39,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 8/45 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-11-22 13:48:39,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 117 flow [2024-11-22 13:48:39,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 106 flow [2024-11-22 13:48:39,970 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:48:39,975 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;@6aedbf8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:48:39,975 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 13:48:39,985 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:48:39,986 INFO L124 PetriNetUnfolderBase]: 8/43 cut-off events. [2024-11-22 13:48:39,986 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 13:48:39,986 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:39,986 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] [2024-11-22 13:48:39,987 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)] === [2024-11-22 13:48:39,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:39,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1548629740, now seen corresponding path program 1 times [2024-11-22 13:48:39,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:39,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726232070] [2024-11-22 13:48:39,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:39,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:40,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:48:40,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:40,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726232070] [2024-11-22 13:48:40,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726232070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:40,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:48:40,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:48:40,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875011816] [2024-11-22 13:48:40,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:40,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 13:48:40,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:40,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 13:48:40,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 13:48:40,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-22 13:48:40,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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) [2024-11-22 13:48:40,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:40,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-22 13:48:40,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:40,530 INFO L124 PetriNetUnfolderBase]: 1049/1799 cut-off events. [2024-11-22 13:48:40,531 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-22 13:48:40,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3314 conditions, 1799 events. 1049/1799 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9508 event pairs, 858 based on Foata normal form. 165/1779 useless extension candidates. Maximal degree in co-relation 3107. Up to 1394 conditions per place. [2024-11-22 13:48:40,546 INFO L140 encePairwiseOnDemand]: 46/48 looper letters, 32 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2024-11-22 13:48:40,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 42 transitions, 166 flow [2024-11-22 13:48:40,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 13:48:40,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 13:48:40,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2024-11-22 13:48:40,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-22 13:48:40,557 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 106 flow. Second operand 2 states and 60 transitions. [2024-11-22 13:48:40,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 42 transitions, 166 flow [2024-11-22 13:48:40,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 154 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-22 13:48:40,563 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 90 flow [2024-11-22 13:48:40,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2024-11-22 13:48:40,567 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2024-11-22 13:48:40,567 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 90 flow [2024-11-22 13:48:40,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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) [2024-11-22 13:48:40,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:40,568 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:40,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:48:40,568 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)] === [2024-11-22 13:48:40,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:40,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1379772624, now seen corresponding path program 1 times [2024-11-22 13:48:40,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:40,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197585626] [2024-11-22 13:48:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:40,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:40,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:48:40,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:40,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197585626] [2024-11-22 13:48:40,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197585626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:40,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:48:40,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:48:40,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297136490] [2024-11-22 13:48:40,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:40,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:48:40,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:40,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:48:40,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:48:40,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-22 13:48:40,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-22 13:48:40,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:40,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-22 13:48:40,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:40,967 INFO L124 PetriNetUnfolderBase]: 1040/1732 cut-off events. [2024-11-22 13:48:40,967 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-22 13:48:40,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3223 conditions, 1732 events. 1040/1732 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8672 event pairs, 266 based on Foata normal form. 33/1662 useless extension candidates. Maximal degree in co-relation 3220. Up to 1251 conditions per place. [2024-11-22 13:48:40,978 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 42 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2024-11-22 13:48:40,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 208 flow [2024-11-22 13:48:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:48:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:48:40,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-22 13:48:40,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-11-22 13:48:40,981 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 90 flow. Second operand 3 states and 85 transitions. [2024-11-22 13:48:40,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 208 flow [2024-11-22 13:48:40,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 208 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 13:48:40,984 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 109 flow [2024-11-22 13:48:40,986 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2024-11-22 13:48:40,987 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2024-11-22 13:48:40,987 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 109 flow [2024-11-22 13:48:40,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-22 13:48:40,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:40,987 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:40,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:48:40,988 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)] === [2024-11-22 13:48:40,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:40,989 INFO L85 PathProgramCache]: Analyzing trace with hash 58375550, now seen corresponding path program 2 times [2024-11-22 13:48:40,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:40,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845636071] [2024-11-22 13:48:40,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:48:40,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:41,020 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:48:41,020 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:48:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:48:41,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:41,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845636071] [2024-11-22 13:48:41,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845636071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:41,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:48:41,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:48:41,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083051358] [2024-11-22 13:48:41,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:41,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:48:41,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:41,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:48:41,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:48:41,126 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-22 13:48:41,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-22 13:48:41,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:41,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-22 13:48:41,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:41,281 INFO L124 PetriNetUnfolderBase]: 871/1554 cut-off events. [2024-11-22 13:48:41,281 INFO L125 PetriNetUnfolderBase]: For 239/241 co-relation queries the response was YES. [2024-11-22 13:48:41,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 1554 events. 871/1554 cut-off events. For 239/241 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7971 event pairs, 315 based on Foata normal form. 32/1477 useless extension candidates. Maximal degree in co-relation 3132. Up to 794 conditions per place. [2024-11-22 13:48:41,289 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 45 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-11-22 13:48:41,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 237 flow [2024-11-22 13:48:41,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:48:41,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:48:41,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-22 13:48:41,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-11-22 13:48:41,292 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 109 flow. Second operand 3 states and 85 transitions. [2024-11-22 13:48:41,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 237 flow [2024-11-22 13:48:41,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:48:41,294 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 118 flow [2024-11-22 13:48:41,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-11-22 13:48:41,295 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2024-11-22 13:48:41,296 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 118 flow [2024-11-22 13:48:41,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-22 13:48:41,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:41,296 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:41,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:48:41,296 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)] === [2024-11-22 13:48:41,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:41,297 INFO L85 PathProgramCache]: Analyzing trace with hash -2118938302, now seen corresponding path program 3 times [2024-11-22 13:48:41,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:41,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166980504] [2024-11-22 13:48:41,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:48:41,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:41,320 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:48:41,321 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:48:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:48:41,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:41,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166980504] [2024-11-22 13:48:41,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166980504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:41,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:48:41,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:48:41,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16129009] [2024-11-22 13:48:41,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:41,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:48:41,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:41,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:48:41,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:48:41,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-22 13:48:41,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-22 13:48:41,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:41,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-22 13:48:41,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:41,604 INFO L124 PetriNetUnfolderBase]: 1319/2209 cut-off events. [2024-11-22 13:48:41,605 INFO L125 PetriNetUnfolderBase]: For 472/500 co-relation queries the response was YES. [2024-11-22 13:48:41,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4910 conditions, 2209 events. 1319/2209 cut-off events. For 472/500 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12431 event pairs, 426 based on Foata normal form. 1/2109 useless extension candidates. Maximal degree in co-relation 4904. Up to 1175 conditions per place. [2024-11-22 13:48:41,615 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 48 selfloop transitions, 2 changer transitions 6/66 dead transitions. [2024-11-22 13:48:41,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 286 flow [2024-11-22 13:48:41,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:48:41,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:48:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-11-22 13:48:41,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-11-22 13:48:41,621 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 118 flow. Second operand 3 states and 94 transitions. [2024-11-22 13:48:41,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 286 flow [2024-11-22 13:48:41,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:48:41,623 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 124 flow [2024-11-22 13:48:41,623 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-11-22 13:48:41,623 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-11-22 13:48:41,623 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 124 flow [2024-11-22 13:48:41,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-22 13:48:41,624 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:41,624 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:41,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:48:41,628 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)] === [2024-11-22 13:48:41,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:41,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2126932116, now seen corresponding path program 1 times [2024-11-22 13:48:41,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:41,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969813374] [2024-11-22 13:48:41,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:41,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:41,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:48:41,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:41,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969813374] [2024-11-22 13:48:41,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969813374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:41,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:48:41,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:48:41,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577828186] [2024-11-22 13:48:41,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:41,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:48:41,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:41,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:48:41,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:48:41,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-22 13:48:41,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-11-22 13:48:41,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:41,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-22 13:48:41,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:41,802 INFO L124 PetriNetUnfolderBase]: 496/826 cut-off events. [2024-11-22 13:48:41,803 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-11-22 13:48:41,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1890 conditions, 826 events. 496/826 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3791 event pairs, 190 based on Foata normal form. 44/825 useless extension candidates. Maximal degree in co-relation 1883. Up to 546 conditions per place. [2024-11-22 13:48:41,806 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 39 selfloop transitions, 2 changer transitions 1/52 dead transitions. [2024-11-22 13:48:41,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 52 transitions, 228 flow [2024-11-22 13:48:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:48:41,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:48:41,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-22 13:48:41,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-22 13:48:41,808 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 124 flow. Second operand 3 states and 80 transitions. [2024-11-22 13:48:41,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 52 transitions, 228 flow [2024-11-22 13:48:41,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 224 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 13:48:41,809 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 132 flow [2024-11-22 13:48:41,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-11-22 13:48:41,810 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2024-11-22 13:48:41,810 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 132 flow [2024-11-22 13:48:41,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-11-22 13:48:41,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:41,811 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:41,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:48:41,811 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)] === [2024-11-22 13:48:41,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:41,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1398072178, now seen corresponding path program 2 times [2024-11-22 13:48:41,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:41,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949083583] [2024-11-22 13:48:41,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:48:41,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:41,828 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:48:41,828 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:48:41,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:48:41,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:41,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949083583] [2024-11-22 13:48:41,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949083583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:41,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:48:41,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:48:41,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712375235] [2024-11-22 13:48:41,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:41,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:48:41,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:41,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:48:41,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:48:41,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-22 13:48:41,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:48:41,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:41,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-22 13:48:41,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:42,027 INFO L124 PetriNetUnfolderBase]: 545/932 cut-off events. [2024-11-22 13:48:42,027 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-11-22 13:48:42,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 932 events. 545/932 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4388 event pairs, 411 based on Foata normal form. 13/898 useless extension candidates. Maximal degree in co-relation 2176. Up to 745 conditions per place. [2024-11-22 13:48:42,031 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 35 selfloop transitions, 2 changer transitions 15/62 dead transitions. [2024-11-22 13:48:42,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 271 flow [2024-11-22 13:48:42,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:48:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:48:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-11-22 13:48:42,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-11-22 13:48:42,033 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 132 flow. Second operand 5 states and 114 transitions. [2024-11-22 13:48:42,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 271 flow [2024-11-22 13:48:42,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:48:42,034 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 146 flow [2024-11-22 13:48:42,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-11-22 13:48:42,035 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2024-11-22 13:48:42,035 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 146 flow [2024-11-22 13:48:42,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:48:42,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:42,036 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:42,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:48:42,036 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)] === [2024-11-22 13:48:42,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:42,036 INFO L85 PathProgramCache]: Analyzing trace with hash 437576286, now seen corresponding path program 1 times [2024-11-22 13:48:42,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:42,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993430059] [2024-11-22 13:48:42,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:42,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:42,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:48:42,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:42,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993430059] [2024-11-22 13:48:42,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993430059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:42,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:48:42,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:48:42,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008894104] [2024-11-22 13:48:42,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:42,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:48:42,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:42,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:48:42,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:48:42,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-22 13:48:42,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2024-11-22 13:48:42,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:42,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-22 13:48:42,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:42,346 INFO L124 PetriNetUnfolderBase]: 570/981 cut-off events. [2024-11-22 13:48:42,347 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2024-11-22 13:48:42,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2334 conditions, 981 events. 570/981 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4716 event pairs, 437 based on Foata normal form. 6/941 useless extension candidates. Maximal degree in co-relation 2323. Up to 746 conditions per place. [2024-11-22 13:48:42,351 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 36 selfloop transitions, 2 changer transitions 15/63 dead transitions. [2024-11-22 13:48:42,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 295 flow [2024-11-22 13:48:42,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:48:42,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:48:42,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-11-22 13:48:42,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2024-11-22 13:48:42,353 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 146 flow. Second operand 4 states and 101 transitions. [2024-11-22 13:48:42,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 295 flow [2024-11-22 13:48:42,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 283 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-22 13:48:42,355 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 152 flow [2024-11-22 13:48:42,355 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-11-22 13:48:42,355 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2024-11-22 13:48:42,355 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 152 flow [2024-11-22 13:48:42,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2024-11-22 13:48:42,356 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:42,356 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:42,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:48:42,356 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)] === [2024-11-22 13:48:42,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:42,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1816335908, now seen corresponding path program 1 times [2024-11-22 13:48:42,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:42,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533919354] [2024-11-22 13:48:42,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:42,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:48:42,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:42,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533919354] [2024-11-22 13:48:42,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533919354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:42,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:48:42,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:48:42,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583793413] [2024-11-22 13:48:42,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:42,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:48:42,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:42,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:48:42,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:48:42,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-22 13:48:42,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:48:42,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:42,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-22 13:48:42,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:42,612 INFO L124 PetriNetUnfolderBase]: 602/1061 cut-off events. [2024-11-22 13:48:42,612 INFO L125 PetriNetUnfolderBase]: For 303/303 co-relation queries the response was YES. [2024-11-22 13:48:42,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2486 conditions, 1061 events. 602/1061 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5196 event pairs, 462 based on Foata normal form. 6/1012 useless extension candidates. Maximal degree in co-relation 2475. Up to 747 conditions per place. [2024-11-22 13:48:42,617 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 37 selfloop transitions, 2 changer transitions 17/66 dead transitions. [2024-11-22 13:48:42,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 315 flow [2024-11-22 13:48:42,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:48:42,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:48:42,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-22 13:48:42,618 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-22 13:48:42,618 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 152 flow. Second operand 4 states and 102 transitions. [2024-11-22 13:48:42,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 315 flow [2024-11-22 13:48:42,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 307 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-22 13:48:42,620 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 160 flow [2024-11-22 13:48:42,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-11-22 13:48:42,621 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2024-11-22 13:48:42,621 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 160 flow [2024-11-22 13:48:42,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:48:42,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:42,622 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:42,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:48:42,622 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)] === [2024-11-22 13:48:42,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:42,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1361437026, now seen corresponding path program 1 times [2024-11-22 13:48:42,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:42,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846138142] [2024-11-22 13:48:42,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:42,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:42,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:48:42,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:42,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846138142] [2024-11-22 13:48:42,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846138142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:48:42,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907109396] [2024-11-22 13:48:42,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:42,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:48:42,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:48:42,889 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) [2024-11-22 13:48:42,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:48:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:43,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 13:48:43,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:48:43,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:48:43,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:48:43,213 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 12 treesize of output 4 [2024-11-22 13:48:43,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:48:43,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907109396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:48:43,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:48:43,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-22 13:48:43,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433283793] [2024-11-22 13:48:43,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:48:43,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 13:48:43,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:43,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 13:48:43,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:48:43,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-22 13:48:43,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 160 flow. Second operand has 16 states, 16 states have (on average 18.0) internal successors, (288), 16 states have internal predecessors, (288), 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) [2024-11-22 13:48:43,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:43,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-22 13:48:43,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:43,775 INFO L124 PetriNetUnfolderBase]: 772/1342 cut-off events. [2024-11-22 13:48:43,775 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2024-11-22 13:48:43,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3166 conditions, 1342 events. 772/1342 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6989 event pairs, 380 based on Foata normal form. 36/1307 useless extension candidates. Maximal degree in co-relation 3154. Up to 649 conditions per place. [2024-11-22 13:48:43,780 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 43 selfloop transitions, 4 changer transitions 42/99 dead transitions. [2024-11-22 13:48:43,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 488 flow [2024-11-22 13:48:43,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:48:43,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:48:43,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-11-22 13:48:43,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46064814814814814 [2024-11-22 13:48:43,782 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 160 flow. Second operand 9 states and 199 transitions. [2024-11-22 13:48:43,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 488 flow [2024-11-22 13:48:43,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 99 transitions, 476 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-22 13:48:43,783 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 180 flow [2024-11-22 13:48:43,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=180, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2024-11-22 13:48:43,784 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2024-11-22 13:48:43,784 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 180 flow [2024-11-22 13:48:43,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.0) internal successors, (288), 16 states have internal predecessors, (288), 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) [2024-11-22 13:48:43,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:43,785 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:43,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:48:43,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:48:43,986 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)] === [2024-11-22 13:48:43,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:43,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1083772964, now seen corresponding path program 2 times [2024-11-22 13:48:43,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:43,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130326075] [2024-11-22 13:48:43,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:48:43,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:44,030 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:48:44,030 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:48:44,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:48:44,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:44,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130326075] [2024-11-22 13:48:44,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130326075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:48:44,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823731618] [2024-11-22 13:48:44,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:48:44,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:48:44,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:48:44,556 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) [2024-11-22 13:48:44,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:48:44,654 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:48:44,654 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:48:44,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 13:48:44,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:48:44,769 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 13:48:44,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:48:44,848 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 13:48:44,848 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 24 treesize of output 11 [2024-11-22 13:48:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 13:48:44,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823731618] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:48:44,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:48:44,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2024-11-22 13:48:44,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594382160] [2024-11-22 13:48:44,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:44,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:48:44,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:44,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:48:44,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:48:44,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-11-22 13:48:44,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-11-22 13:48:44,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:44,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-11-22 13:48:44,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:45,101 INFO L124 PetriNetUnfolderBase]: 907/1447 cut-off events. [2024-11-22 13:48:45,101 INFO L125 PetriNetUnfolderBase]: For 682/694 co-relation queries the response was YES. [2024-11-22 13:48:45,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3580 conditions, 1447 events. 907/1447 cut-off events. For 682/694 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 7108 event pairs, 160 based on Foata normal form. 0/1367 useless extension candidates. Maximal degree in co-relation 3565. Up to 793 conditions per place. [2024-11-22 13:48:45,107 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 66 selfloop transitions, 5 changer transitions 1/80 dead transitions. [2024-11-22 13:48:45,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 413 flow [2024-11-22 13:48:45,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:48:45,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:48:45,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-22 13:48:45,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-22 13:48:45,109 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 180 flow. Second operand 5 states and 120 transitions. [2024-11-22 13:48:45,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 413 flow [2024-11-22 13:48:45,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 389 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-11-22 13:48:45,112 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 188 flow [2024-11-22 13:48:45,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-11-22 13:48:45,113 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 17 predicate places. [2024-11-22 13:48:45,113 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 188 flow [2024-11-22 13:48:45,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-11-22 13:48:45,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:45,114 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:45,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 13:48:45,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 13:48:45,315 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)] === [2024-11-22 13:48:45,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:45,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1769912796, now seen corresponding path program 1 times [2024-11-22 13:48:45,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:45,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098325869] [2024-11-22 13:48:45,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:45,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:45,504 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:48:45,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:45,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098325869] [2024-11-22 13:48:45,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098325869] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:48:45,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787879150] [2024-11-22 13:48:45,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:45,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:48:45,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:48:45,507 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) [2024-11-22 13:48:45,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 13:48:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:45,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 13:48:45,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:48:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:48:45,744 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:48:45,947 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 13:48:45,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787879150] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:48:45,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:48:45,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-22 13:48:45,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508671092] [2024-11-22 13:48:45,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:48:45,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 13:48:45,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:45,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 13:48:45,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-22 13:48:45,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-22 13:48:45,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 188 flow. Second operand has 18 states, 18 states have (on average 17.88888888888889) internal successors, (322), 18 states have internal predecessors, (322), 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) [2024-11-22 13:48:45,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:45,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-22 13:48:45,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:46,258 INFO L124 PetriNetUnfolderBase]: 928/1594 cut-off events. [2024-11-22 13:48:46,258 INFO L125 PetriNetUnfolderBase]: For 1435/1537 co-relation queries the response was YES. [2024-11-22 13:48:46,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4227 conditions, 1594 events. 928/1594 cut-off events. For 1435/1537 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 8422 event pairs, 487 based on Foata normal form. 59/1593 useless extension candidates. Maximal degree in co-relation 4214. Up to 793 conditions per place. [2024-11-22 13:48:46,265 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 41 selfloop transitions, 5 changer transitions 38/95 dead transitions. [2024-11-22 13:48:46,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 499 flow [2024-11-22 13:48:46,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:48:46,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:48:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 195 transitions. [2024-11-22 13:48:46,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4513888888888889 [2024-11-22 13:48:46,266 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 188 flow. Second operand 9 states and 195 transitions. [2024-11-22 13:48:46,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 499 flow [2024-11-22 13:48:46,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 95 transitions, 492 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-22 13:48:46,268 INFO L231 Difference]: Finished difference. Result has 74 places, 53 transitions, 212 flow [2024-11-22 13:48:46,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=212, PETRI_PLACES=74, PETRI_TRANSITIONS=53} [2024-11-22 13:48:46,269 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2024-11-22 13:48:46,269 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 212 flow [2024-11-22 13:48:46,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.88888888888889) internal successors, (322), 18 states have internal predecessors, (322), 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) [2024-11-22 13:48:46,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:46,269 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:46,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 13:48:46,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:48:46,471 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)] === [2024-11-22 13:48:46,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:46,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1781446640, now seen corresponding path program 2 times [2024-11-22 13:48:46,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:46,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173282465] [2024-11-22 13:48:46,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:48:46,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:46,512 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:48:46,512 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:48:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 13:48:46,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:46,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173282465] [2024-11-22 13:48:46,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173282465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:46,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:48:46,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:48:46,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320335373] [2024-11-22 13:48:46,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:46,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:48:46,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:46,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:48:46,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:48:46,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-22 13:48:46,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 53 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2024-11-22 13:48:46,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:46,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-22 13:48:46,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:46,872 INFO L124 PetriNetUnfolderBase]: 1153/2065 cut-off events. [2024-11-22 13:48:46,872 INFO L125 PetriNetUnfolderBase]: For 2698/2860 co-relation queries the response was YES. [2024-11-22 13:48:46,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5649 conditions, 2065 events. 1153/2065 cut-off events. For 2698/2860 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 12909 event pairs, 335 based on Foata normal form. 57/2093 useless extension candidates. Maximal degree in co-relation 5631. Up to 600 conditions per place. [2024-11-22 13:48:46,884 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 73 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-11-22 13:48:46,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 92 transitions, 506 flow [2024-11-22 13:48:46,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:48:46,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:48:46,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-22 13:48:46,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-11-22 13:48:46,886 INFO L175 Difference]: Start difference. First operand has 74 places, 53 transitions, 212 flow. Second operand 4 states and 124 transitions. [2024-11-22 13:48:46,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 92 transitions, 506 flow [2024-11-22 13:48:46,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 92 transitions, 476 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-11-22 13:48:46,889 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 255 flow [2024-11-22 13:48:46,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-11-22 13:48:46,891 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-11-22 13:48:46,892 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 255 flow [2024-11-22 13:48:46,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2024-11-22 13:48:46,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:46,892 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:46,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 13:48:46,892 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)] === [2024-11-22 13:48:46,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:46,893 INFO L85 PathProgramCache]: Analyzing trace with hash -841575620, now seen corresponding path program 3 times [2024-11-22 13:48:46,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:46,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682005155] [2024-11-22 13:48:46,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:48:46,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:46,982 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 13:48:46,984 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:48:48,230 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 13:48:48,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:48,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682005155] [2024-11-22 13:48:48,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682005155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:48:48,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203265941] [2024-11-22 13:48:48,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:48:48,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:48:48,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:48:48,233 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) [2024-11-22 13:48:48,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 13:48:48,349 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 13:48:48,350 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:48:48,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-22 13:48:48,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:48:48,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 13:48:48,554 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 34 treesize of output 30 [2024-11-22 13:48:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 13:48:48,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:48:48,859 INFO L349 Elim1Store]: treesize reduction 4, result has 95.7 percent of original size [2024-11-22 13:48:48,860 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 45 treesize of output 101 [2024-11-22 13:48:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 13:48:48,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203265941] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 13:48:48,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 13:48:48,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15, 8] total 25 [2024-11-22 13:48:48,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587887334] [2024-11-22 13:48:48,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:48,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:48:48,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:48,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:48:48,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2024-11-22 13:48:49,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-11-22 13:48:49,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 255 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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) [2024-11-22 13:48:49,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:49,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-11-22 13:48:49,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:49,508 INFO L124 PetriNetUnfolderBase]: 2221/3752 cut-off events. [2024-11-22 13:48:49,508 INFO L125 PetriNetUnfolderBase]: For 6355/6511 co-relation queries the response was YES. [2024-11-22 13:48:49,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10518 conditions, 3752 events. 2221/3752 cut-off events. For 6355/6511 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22974 event pairs, 359 based on Foata normal form. 0/3596 useless extension candidates. Maximal degree in co-relation 10501. Up to 2047 conditions per place. [2024-11-22 13:48:49,534 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 78 selfloop transitions, 7 changer transitions 1/95 dead transitions. [2024-11-22 13:48:49,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 95 transitions, 567 flow [2024-11-22 13:48:49,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:48:49,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:48:49,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-11-22 13:48:49,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-22 13:48:49,536 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 255 flow. Second operand 7 states and 147 transitions. [2024-11-22 13:48:49,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 95 transitions, 567 flow [2024-11-22 13:48:49,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 95 transitions, 555 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-22 13:48:49,540 INFO L231 Difference]: Finished difference. Result has 77 places, 60 transitions, 279 flow [2024-11-22 13:48:49,540 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=279, PETRI_PLACES=77, PETRI_TRANSITIONS=60} [2024-11-22 13:48:49,541 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2024-11-22 13:48:49,542 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 60 transitions, 279 flow [2024-11-22 13:48:49,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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) [2024-11-22 13:48:49,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:49,542 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:49,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 13:48:49,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:48:49,743 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)] === [2024-11-22 13:48:49,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:49,745 INFO L85 PathProgramCache]: Analyzing trace with hash -18317673, now seen corresponding path program 1 times [2024-11-22 13:48:49,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:49,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925017673] [2024-11-22 13:48:49,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:49,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:49,974 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 13:48:49,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:49,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925017673] [2024-11-22 13:48:49,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925017673] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:48:49,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940820502] [2024-11-22 13:48:49,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:48:49,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:48:49,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:48:49,977 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) [2024-11-22 13:48:49,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 13:48:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:48:50,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 13:48:50,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:48:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 13:48:50,322 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:48:50,552 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 13:48:50,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940820502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:48:50,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:48:50,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2024-11-22 13:48:50,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201126852] [2024-11-22 13:48:50,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:48:50,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 13:48:50,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:50,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 13:48:50,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:48:50,554 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-22 13:48:50,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 60 transitions, 279 flow. Second operand has 16 states, 16 states have (on average 18.875) internal successors, (302), 16 states have internal predecessors, (302), 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) [2024-11-22 13:48:50,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:50,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-22 13:48:50,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:51,054 INFO L124 PetriNetUnfolderBase]: 2149/4379 cut-off events. [2024-11-22 13:48:51,055 INFO L125 PetriNetUnfolderBase]: For 8554/9052 co-relation queries the response was YES. [2024-11-22 13:48:51,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12816 conditions, 4379 events. 2149/4379 cut-off events. For 8554/9052 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 33357 event pairs, 1096 based on Foata normal form. 154/4480 useless extension candidates. Maximal degree in co-relation 12797. Up to 2047 conditions per place. [2024-11-22 13:48:51,074 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 45 selfloop transitions, 5 changer transitions 39/101 dead transitions. [2024-11-22 13:48:51,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 101 transitions, 643 flow [2024-11-22 13:48:51,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:48:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:48:51,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-11-22 13:48:51,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4661458333333333 [2024-11-22 13:48:51,076 INFO L175 Difference]: Start difference. First operand has 77 places, 60 transitions, 279 flow. Second operand 8 states and 179 transitions. [2024-11-22 13:48:51,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 101 transitions, 643 flow [2024-11-22 13:48:51,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 101 transitions, 627 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-22 13:48:51,082 INFO L231 Difference]: Finished difference. Result has 84 places, 61 transitions, 295 flow [2024-11-22 13:48:51,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=295, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2024-11-22 13:48:51,083 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 38 predicate places. [2024-11-22 13:48:51,083 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 295 flow [2024-11-22 13:48:51,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.875) internal successors, (302), 16 states have internal predecessors, (302), 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) [2024-11-22 13:48:51,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:51,083 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:51,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 13:48:51,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 13:48:51,284 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)] === [2024-11-22 13:48:51,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:51,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1190082331, now seen corresponding path program 2 times [2024-11-22 13:48:51,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:51,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101452947] [2024-11-22 13:48:51,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:48:51,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:51,376 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:48:51,377 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:48:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 13:48:51,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:51,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101452947] [2024-11-22 13:48:51,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101452947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:48:51,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:48:51,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:48:51,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543675315] [2024-11-22 13:48:51,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:48:51,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:48:51,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:48:51,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:48:51,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:48:51,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-22 13:48:51,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 295 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2024-11-22 13:48:51,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:48:51,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-22 13:48:51,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:48:52,114 INFO L124 PetriNetUnfolderBase]: 3124/6415 cut-off events. [2024-11-22 13:48:52,115 INFO L125 PetriNetUnfolderBase]: For 12288/12697 co-relation queries the response was YES. [2024-11-22 13:48:52,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18501 conditions, 6415 events. 3124/6415 cut-off events. For 12288/12697 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 50668 event pairs, 849 based on Foata normal form. 187/6593 useless extension candidates. Maximal degree in co-relation 18478. Up to 1755 conditions per place. [2024-11-22 13:48:52,144 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 89 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2024-11-22 13:48:52,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 107 transitions, 706 flow [2024-11-22 13:48:52,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:48:52,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:48:52,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-11-22 13:48:52,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2024-11-22 13:48:52,145 INFO L175 Difference]: Start difference. First operand has 84 places, 61 transitions, 295 flow. Second operand 4 states and 121 transitions. [2024-11-22 13:48:52,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 107 transitions, 706 flow [2024-11-22 13:48:52,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 107 transitions, 678 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-11-22 13:48:52,176 INFO L231 Difference]: Finished difference. Result has 81 places, 64 transitions, 323 flow [2024-11-22 13:48:52,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=81, PETRI_TRANSITIONS=64} [2024-11-22 13:48:52,178 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2024-11-22 13:48:52,178 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 64 transitions, 323 flow [2024-11-22 13:48:52,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2024-11-22 13:48:52,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:48:52,178 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:48:52,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 13:48:52,179 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)] === [2024-11-22 13:48:52,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:48:52,179 INFO L85 PathProgramCache]: Analyzing trace with hash 969904853, now seen corresponding path program 3 times [2024-11-22 13:48:52,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:48:52,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730944004] [2024-11-22 13:48:52,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:48:52,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:48:52,282 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 13:48:52,282 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:48:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:48:55,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:48:55,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730944004] [2024-11-22 13:48:55,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730944004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:48:55,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567576059] [2024-11-22 13:48:55,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:48:55,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:48:55,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:48:55,739 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) [2024-11-22 13:48:55,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 13:48:55,861 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 13:48:55,862 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:48:55,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-22 13:48:55,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:48:57,076 INFO L349 Elim1Store]: treesize reduction 9, result has 83.9 percent of original size [2024-11-22 13:48:57,076 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 56 treesize of output 64 [2024-11-22 13:48:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:48:57,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:48:58,120 INFO L349 Elim1Store]: treesize reduction 8, result has 96.8 percent of original size [2024-11-22 13:48:58,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 79 treesize of output 267 [2024-11-22 13:49:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 13:49:10,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567576059] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:49:10,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:49:10,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 17, 13] total 51 [2024-11-22 13:49:10,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137106165] [2024-11-22 13:49:10,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:49:10,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-22 13:49:10,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:49:10,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-22 13:49:10,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2349, Unknown=0, NotChecked=0, Total=2550 [2024-11-22 13:49:11,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-11-22 13:49:11,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 64 transitions, 323 flow. Second operand has 51 states, 51 states have (on average 12.215686274509803) internal successors, (623), 51 states have internal predecessors, (623), 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) [2024-11-22 13:49:11,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:49:11,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-11-22 13:49:11,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:49:20,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 13:49:25,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 13:49:36,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 13:49:51,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 13:49:56,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 13:50:06,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 13:50:10,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]