./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-array-sum.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 e4a4a131c0d4df2db1bf018027395318bc112945cbb20d5c862562c48934e5a1 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:25:31,546 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:25:31,615 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:25:31,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:25:31,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:25:31,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:25:31,654 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:25:31,654 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:25:31,655 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:25:31,655 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:25:31,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:25:31,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:25:31,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:25:31,656 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:25:31,657 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:25:31,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:25:31,660 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:25:31,662 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:25:31,662 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:25:31,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:25:31,662 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:25:31,664 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:25:31,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:25:31,664 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:25:31,664 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:25:31,665 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:25:31,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:25:31,665 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:25:31,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:25:31,666 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:25:31,666 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:25:31,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:25:31,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:25:31,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:25:31,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:25:31,668 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:25:31,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:25:31,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:25:31,669 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:25:31,669 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:25:31,670 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:25:31,670 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:25:31,670 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4a4a131c0d4df2db1bf018027395318bc112945cbb20d5c862562c48934e5a1 [2024-11-12 08:25:31,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:25:31,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:25:31,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:25:31,973 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:25:31,973 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:25:31,974 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2024-11-12 08:25:33,431 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:25:33,630 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:25:33,631 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2024-11-12 08:25:33,638 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9d612e41/63008f5515cd4c65aec756942a393ce9/FLAGa188cc059 [2024-11-12 08:25:33,653 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9d612e41/63008f5515cd4c65aec756942a393ce9 [2024-11-12 08:25:33,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:25:33,659 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:25:33,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:25:33,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:25:33,668 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:25:33,669 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:25:33" (1/1) ... [2024-11-12 08:25:33,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b4c42f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:33, skipping insertion in model container [2024-11-12 08:25:33,671 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:25:33" (1/1) ... [2024-11-12 08:25:33,698 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:25:33,913 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c[2423,2436] [2024-11-12 08:25:33,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:25:33,931 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:25:33,951 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c[2423,2436] [2024-11-12 08:25:33,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:25:33,975 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:25:33,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:33 WrapperNode [2024-11-12 08:25:33,976 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:25:33,977 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:25:33,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:25:33,978 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:25:33,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:33" (1/1) ... [2024-11-12 08:25:33,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:33" (1/1) ... [2024-11-12 08:25:34,034 INFO L138 Inliner]: procedures = 22, calls = 31, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 264 [2024-11-12 08:25:34,035 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:25:34,036 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:25:34,036 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:25:34,036 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:25:34,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:33" (1/1) ... [2024-11-12 08:25:34,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:33" (1/1) ... [2024-11-12 08:25:34,052 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:33" (1/1) ... [2024-11-12 08:25:34,089 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-12 08:25:34,089 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:33" (1/1) ... [2024-11-12 08:25:34,089 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:33" (1/1) ... [2024-11-12 08:25:34,101 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:33" (1/1) ... [2024-11-12 08:25:34,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:33" (1/1) ... [2024-11-12 08:25:34,109 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:33" (1/1) ... [2024-11-12 08:25:34,111 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:33" (1/1) ... [2024-11-12 08:25:34,117 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:25:34,118 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:25:34,118 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:25:34,118 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:25:34,119 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:33" (1/1) ... [2024-11-12 08:25:34,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:25:34,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:25:34,150 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) [2024-11-12 08:25:34,152 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 [2024-11-12 08:25:34,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:25:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 08:25:34,196 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 08:25:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 08:25:34,196 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 08:25:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 08:25:34,196 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 08:25:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:25:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 08:25:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 08:25:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 08:25:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 08:25:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:25:34,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:25:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 08:25:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 08:25:34,199 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:25:34,301 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:25:34,303 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:25:34,735 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:25:34,735 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:25:35,196 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:25:35,197 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-12 08:25:35,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:25:35 BoogieIcfgContainer [2024-11-12 08:25:35,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:25:35,199 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:25:35,199 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:25:35,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:25:35,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:25:33" (1/3) ... [2024-11-12 08:25:35,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f8b752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:25:35, skipping insertion in model container [2024-11-12 08:25:35,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:33" (2/3) ... [2024-11-12 08:25:35,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f8b752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:25:35, skipping insertion in model container [2024-11-12 08:25:35,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:25:35" (3/3) ... [2024-11-12 08:25:35,208 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2024-11-12 08:25:35,225 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:25:35,226 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:25:35,226 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:25:35,294 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 08:25:35,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 87 flow [2024-11-12 08:25:35,362 INFO L124 PetriNetUnfolderBase]: 5/30 cut-off events. [2024-11-12 08:25:35,362 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 08:25:35,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 5/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-11-12 08:25:35,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 33 transitions, 87 flow [2024-11-12 08:25:35,369 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 29 transitions, 76 flow [2024-11-12 08:25:35,382 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:25:35,390 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;@33f20f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:25:35,390 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-12 08:25:35,403 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:25:35,403 INFO L124 PetriNetUnfolderBase]: 5/28 cut-off events. [2024-11-12 08:25:35,404 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 08:25:35,404 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:25:35,405 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:25:35,406 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)] === [2024-11-12 08:25:35,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:25:35,413 INFO L85 PathProgramCache]: Analyzing trace with hash -870904551, now seen corresponding path program 1 times [2024-11-12 08:25:35,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:25:35,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972289156] [2024-11-12 08:25:35,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:35,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:25:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:25:35,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:25:35,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972289156] [2024-11-12 08:25:35,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972289156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:25:35,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:25:35,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:25:35,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668088375] [2024-11-12 08:25:35,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:25:35,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:25:35,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:25:35,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:25:35,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:25:35,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-12 08:25:35,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-11-12 08:25:35,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:25:35,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-12 08:25:35,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:25:36,216 INFO L124 PetriNetUnfolderBase]: 818/1181 cut-off events. [2024-11-12 08:25:36,216 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-11-12 08:25:36,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2482 conditions, 1181 events. 818/1181 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4418 event pairs, 226 based on Foata normal form. 1/936 useless extension candidates. Maximal degree in co-relation 2122. Up to 803 conditions per place. [2024-11-12 08:25:36,229 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 42 selfloop transitions, 4 changer transitions 1/48 dead transitions. [2024-11-12 08:25:36,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 48 transitions, 223 flow [2024-11-12 08:25:36,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:25:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:25:36,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-11-12 08:25:36,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-11-12 08:25:36,244 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 76 flow. Second operand 3 states and 60 transitions. [2024-11-12 08:25:36,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 48 transitions, 223 flow [2024-11-12 08:25:36,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 48 transitions, 201 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-12 08:25:36,254 INFO L231 Difference]: Finished difference. Result has 31 places, 32 transitions, 90 flow [2024-11-12 08:25:36,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=31, PETRI_TRANSITIONS=32} [2024-11-12 08:25:36,260 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2024-11-12 08:25:36,261 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 32 transitions, 90 flow [2024-11-12 08:25:36,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-11-12 08:25:36,261 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:25:36,261 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:25:36,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:25:36,262 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)] === [2024-11-12 08:25:36,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:25:36,263 INFO L85 PathProgramCache]: Analyzing trace with hash -840248134, now seen corresponding path program 1 times [2024-11-12 08:25:36,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:25:36,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235943910] [2024-11-12 08:25:36,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:36,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:25:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:36,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:25:36,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:25:36,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235943910] [2024-11-12 08:25:36,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235943910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:25:36,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:25:36,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:25:36,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609292900] [2024-11-12 08:25:36,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:25:36,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:25:36,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:25:36,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:25:36,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:25:36,449 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-12 08:25:36,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-11-12 08:25:36,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:25:36,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-12 08:25:36,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:25:36,706 INFO L124 PetriNetUnfolderBase]: 715/1074 cut-off events. [2024-11-12 08:25:36,706 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2024-11-12 08:25:36,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 1074 events. 715/1074 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4038 event pairs, 478 based on Foata normal form. 0/933 useless extension candidates. Maximal degree in co-relation 780. Up to 991 conditions per place. [2024-11-12 08:25:36,719 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 25 selfloop transitions, 4 changer transitions 3/37 dead transitions. [2024-11-12 08:25:36,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 164 flow [2024-11-12 08:25:36,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:25:36,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:25:36,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-11-12 08:25:36,724 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-11-12 08:25:36,724 INFO L175 Difference]: Start difference. First operand has 31 places, 32 transitions, 90 flow. Second operand 5 states and 64 transitions. [2024-11-12 08:25:36,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 164 flow [2024-11-12 08:25:36,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:25:36,727 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 114 flow [2024-11-12 08:25:36,728 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2024-11-12 08:25:36,729 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2024-11-12 08:25:36,730 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 114 flow [2024-11-12 08:25:36,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-11-12 08:25:36,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:25:36,731 INFO L206 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] [2024-11-12 08:25:36,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:25:36,732 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)] === [2024-11-12 08:25:36,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:25:36,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1323465691, now seen corresponding path program 1 times [2024-11-12 08:25:36,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:25:36,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801313673] [2024-11-12 08:25:36,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:36,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:25:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:36,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:25:36,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:25:36,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801313673] [2024-11-12 08:25:36,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801313673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:25:36,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:25:36,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:25:36,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515182099] [2024-11-12 08:25:36,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:25:36,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:25:36,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:25:36,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:25:36,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:25:36,900 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-12 08:25:36,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2024-11-12 08:25:36,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:25:36,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-12 08:25:36,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:25:37,140 INFO L124 PetriNetUnfolderBase]: 719/1084 cut-off events. [2024-11-12 08:25:37,142 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-11-12 08:25:37,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2329 conditions, 1084 events. 719/1084 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4040 event pairs, 254 based on Foata normal form. 0/976 useless extension candidates. Maximal degree in co-relation 2304. Up to 528 conditions per place. [2024-11-12 08:25:37,149 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 37 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-11-12 08:25:37,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 226 flow [2024-11-12 08:25:37,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:25:37,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:25:37,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-11-12 08:25:37,152 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-11-12 08:25:37,153 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 114 flow. Second operand 4 states and 62 transitions. [2024-11-12 08:25:37,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 226 flow [2024-11-12 08:25:37,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 214 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-12 08:25:37,157 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 123 flow [2024-11-12 08:25:37,158 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2024-11-12 08:25:37,158 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2024-11-12 08:25:37,159 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 123 flow [2024-11-12 08:25:37,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2024-11-12 08:25:37,159 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:25:37,160 INFO L206 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] [2024-11-12 08:25:37,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 08:25:37,160 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)] === [2024-11-12 08:25:37,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:25:37,161 INFO L85 PathProgramCache]: Analyzing trace with hash 674066740, now seen corresponding path program 1 times [2024-11-12 08:25:37,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:25:37,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256388449] [2024-11-12 08:25:37,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:37,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:25:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:25:37,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:25:37,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256388449] [2024-11-12 08:25:37,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256388449] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:25:37,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50205311] [2024-11-12 08:25:37,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:37,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:25:37,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:25:37,314 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) [2024-11-12 08:25:37,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 08:25:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:37,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 08:25:37,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:25:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:25:37,535 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:25:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:25:37,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50205311] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:25:37,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:25:37,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-12 08:25:37,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170694999] [2024-11-12 08:25:37,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:25:37,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:25:37,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:25:37,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:25:37,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:25:37,597 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-12 08:25:37,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:25:37,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:25:37,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-12 08:25:37,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:25:37,809 INFO L124 PetriNetUnfolderBase]: 760/1123 cut-off events. [2024-11-12 08:25:37,810 INFO L125 PetriNetUnfolderBase]: For 477/490 co-relation queries the response was YES. [2024-11-12 08:25:37,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2860 conditions, 1123 events. 760/1123 cut-off events. For 477/490 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4267 event pairs, 324 based on Foata normal form. 94/1124 useless extension candidates. Maximal degree in co-relation 2830. Up to 805 conditions per place. [2024-11-12 08:25:37,820 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 40 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2024-11-12 08:25:37,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 263 flow [2024-11-12 08:25:37,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:25:37,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:25:37,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-11-12 08:25:37,823 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-11-12 08:25:37,824 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 123 flow. Second operand 5 states and 72 transitions. [2024-11-12 08:25:37,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 263 flow [2024-11-12 08:25:37,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 50 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 08:25:37,829 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 140 flow [2024-11-12 08:25:37,829 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-11-12 08:25:37,830 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2024-11-12 08:25:37,831 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 140 flow [2024-11-12 08:25:37,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:25:37,831 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:25:37,832 INFO L206 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] [2024-11-12 08:25:37,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 08:25:38,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:25:38,036 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)] === [2024-11-12 08:25:38,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:25:38,037 INFO L85 PathProgramCache]: Analyzing trace with hash 667121893, now seen corresponding path program 1 times [2024-11-12 08:25:38,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:25:38,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429072317] [2024-11-12 08:25:38,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:38,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:25:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:25:39,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:25:39,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429072317] [2024-11-12 08:25:39,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429072317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:25:39,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535669370] [2024-11-12 08:25:39,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:39,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:25:39,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:25:39,321 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) [2024-11-12 08:25:39,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 08:25:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:39,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-12 08:25:39,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:25:39,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-12 08:25:39,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 08:25:39,589 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 08:25:39,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-12 08:25:39,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 08:25:39,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-12 08:25:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:25:39,963 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:25:52,732 INFO L349 Elim1Store]: treesize reduction 28, result has 64.6 percent of original size [2024-11-12 08:25:52,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 1578 treesize of output 1148 [2024-11-12 08:25:52,833 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:25:52,834 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 809 treesize of output 749 [2024-11-12 08:25:58,271 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-12 08:26:01,540 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-12 08:26:09,673 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-12 08:26:10,002 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-12 08:26:10,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:26:10,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 89 [2024-11-12 08:26:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:26:14,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535669370] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:26:14,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:26:14,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2024-11-12 08:26:14,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789964994] [2024-11-12 08:26:14,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:26:14,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 08:26:14,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:26:14,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 08:26:14,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=642, Unknown=3, NotChecked=0, Total=756 [2024-11-12 08:26:14,560 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-12 08:26:14,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 140 flow. Second operand has 28 states, 28 states have (on average 6.178571428571429) internal successors, (173), 28 states have internal predecessors, (173), 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) [2024-11-12 08:26:14,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:26:14,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-12 08:26:14,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:26:18,993 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] [2024-11-12 08:26:23,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 08:26:33,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 08:26:37,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 08:26:39,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 08:26:43,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 08:26:48,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 08:26:52,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 08:26:57,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 08:27:01,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 08:27:03,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]