./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe019_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/pthread-wmm/safe019_rmo.oepc.i -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 63f865703c59d821a54141355edec3427193a51b37abbaa1f96833fe96db9b5e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:18:52,231 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:18:52,307 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:18:52,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:18:52,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:18:52,363 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:18:52,364 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:18:52,364 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:18:52,364 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:18:52,365 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:18:52,366 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:18:52,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:18:52,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:18:52,369 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:18:52,370 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:18:52,371 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:18:52,371 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:18:52,371 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:18:52,372 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:18:52,376 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:18:52,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:18:52,377 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:18:52,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:18:52,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:18:52,378 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:18:52,378 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:18:52,378 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:18:52,378 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:18:52,384 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:18:52,385 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:18:52,385 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:18:52,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:18:52,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:18:52,386 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:18:52,386 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:18:52,386 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:18:52,386 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:18:52,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:18:52,387 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:18:52,387 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:18:52,387 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:18:52,388 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:18:52,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63f865703c59d821a54141355edec3427193a51b37abbaa1f96833fe96db9b5e [2024-11-10 10:18:52,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:18:52,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:18:52,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:18:52,663 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:18:52,664 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:18:52,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_rmo.oepc.i [2024-11-10 10:18:54,063 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:18:54,309 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:18:54,312 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_rmo.oepc.i [2024-11-10 10:18:54,330 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e6e9b6cf/9a66a2a428b94dce85bd05398b0b9749/FLAGabcdf62b7 [2024-11-10 10:18:54,342 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e6e9b6cf/9a66a2a428b94dce85bd05398b0b9749 [2024-11-10 10:18:54,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:18:54,347 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:18:54,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:18:54,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:18:54,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:18:54,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:18:54" (1/1) ... [2024-11-10 10:18:54,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e73999d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:54, skipping insertion in model container [2024-11-10 10:18:54,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:18:54" (1/1) ... [2024-11-10 10:18:54,404 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:18:54,602 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/pthread-wmm/safe019_rmo.oepc.i[993,1006] [2024-11-10 10:18:54,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:18:54,856 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:18:54,870 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/pthread-wmm/safe019_rmo.oepc.i[993,1006] [2024-11-10 10:18:54,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:18:54,970 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:18:54,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:54 WrapperNode [2024-11-10 10:18:54,971 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:18:54,972 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:18:54,973 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:18:54,973 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:18:54,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:54" (1/1) ... [2024-11-10 10:18:55,007 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:54" (1/1) ... [2024-11-10 10:18:55,054 INFO L138 Inliner]: procedures = 176, calls = 69, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 171 [2024-11-10 10:18:55,055 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:18:55,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:18:55,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:18:55,059 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:18:55,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:54" (1/1) ... [2024-11-10 10:18:55,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:54" (1/1) ... [2024-11-10 10:18:55,076 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:54" (1/1) ... [2024-11-10 10:18:55,106 INFO L175 MemorySlicer]: Split 24 memory accesses to 2 slices as follows [22, 2]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [1, 2]. The 9 writes are split as follows [9, 0]. [2024-11-10 10:18:55,107 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:54" (1/1) ... [2024-11-10 10:18:55,107 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:54" (1/1) ... [2024-11-10 10:18:55,121 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:54" (1/1) ... [2024-11-10 10:18:55,126 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:54" (1/1) ... [2024-11-10 10:18:55,128 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:54" (1/1) ... [2024-11-10 10:18:55,133 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:54" (1/1) ... [2024-11-10 10:18:55,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:18:55,142 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:18:55,142 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:18:55,142 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:18:55,143 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:54" (1/1) ... [2024-11-10 10:18:55,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:18:55,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:18:55,186 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) [2024-11-10 10:18:55,193 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 [2024-11-10 10:18:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:18:55,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:18:55,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:18:55,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:18:55,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 10:18:55,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:18:55,243 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-10 10:18:55,244 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-10 10:18:55,244 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-10 10:18:55,245 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-10 10:18:55,245 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-10 10:18:55,245 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-10 10:18:55,245 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-10 10:18:55,246 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-10 10:18:55,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:18:55,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:18:55,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 10:18:55,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:18:55,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:18:55,248 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:18:55,404 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:18:55,407 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:18:55,828 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:18:55,829 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:18:56,260 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:18:56,261 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:18:56,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:18:56 BoogieIcfgContainer [2024-11-10 10:18:56,262 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:18:56,265 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:18:56,265 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:18:56,269 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:18:56,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:18:54" (1/3) ... [2024-11-10 10:18:56,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b57e418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:18:56, skipping insertion in model container [2024-11-10 10:18:56,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:54" (2/3) ... [2024-11-10 10:18:56,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b57e418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:18:56, skipping insertion in model container [2024-11-10 10:18:56,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:18:56" (3/3) ... [2024-11-10 10:18:56,273 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_rmo.oepc.i [2024-11-10 10:18:56,292 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:18:56,293 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:18:56,293 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:18:56,372 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:18:56,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2024-11-10 10:18:56,460 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2024-11-10 10:18:56,461 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:18:56,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-10 10:18:56,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2024-11-10 10:18:56,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2024-11-10 10:18:56,482 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:18:56,492 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;@da13aa4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:18:56,493 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 10:18:56,511 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:18:56,511 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-11-10 10:18:56,512 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:18:56,512 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:18:56,512 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:18:56,513 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 2 more)] === [2024-11-10 10:18:56,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:18:56,518 INFO L85 PathProgramCache]: Analyzing trace with hash 213406438, now seen corresponding path program 1 times [2024-11-10 10:18:56,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:18:56,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421784303] [2024-11-10 10:18:56,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:18:56,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:18:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:18:57,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:18:57,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:18:57,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421784303] [2024-11-10 10:18:57,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421784303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:18:57,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:18:57,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:18:57,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393969813] [2024-11-10 10:18:57,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:18:57,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:18:57,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:18:57,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:18:57,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:18:57,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:18:57,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:18:57,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:18:57,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:18:57,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:19:02,660 INFO L124 PetriNetUnfolderBase]: 27202/36970 cut-off events. [2024-11-10 10:19:02,661 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-11-10 10:19:02,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73595 conditions, 36970 events. 27202/36970 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 1238. Compared 219141 event pairs, 3682 based on Foata normal form. 900/37857 useless extension candidates. Maximal degree in co-relation 73583. Up to 26491 conditions per place. [2024-11-10 10:19:02,975 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 50 selfloop transitions, 2 changer transitions 65/122 dead transitions. [2024-11-10 10:19:02,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 122 transitions, 493 flow [2024-11-10 10:19:02,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:19:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:19:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-11-10 10:19:02,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-11-10 10:19:02,992 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 7 states and 182 transitions. [2024-11-10 10:19:02,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 122 transitions, 493 flow [2024-11-10 10:19:03,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 122 transitions, 488 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 10:19:03,010 INFO L231 Difference]: Finished difference. Result has 58 places, 38 transitions, 100 flow [2024-11-10 10:19:03,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=100, PETRI_PLACES=58, PETRI_TRANSITIONS=38} [2024-11-10 10:19:03,016 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2024-11-10 10:19:03,018 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 38 transitions, 100 flow [2024-11-10 10:19:03,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:19:03,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:03,019 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:19:03,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:19:03,019 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 2 more)] === [2024-11-10 10:19:03,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:03,020 INFO L85 PathProgramCache]: Analyzing trace with hash 54796807, now seen corresponding path program 1 times [2024-11-10 10:19:03,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:03,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007486865] [2024-11-10 10:19:03,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:03,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:03,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:19:03,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:03,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007486865] [2024-11-10 10:19:03,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007486865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:03,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:03,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:19:03,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842502823] [2024-11-10 10:19:03,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:03,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:19:03,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:03,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:19:03,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:19:03,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:19:03,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 38 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2024-11-10 10:19:03,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:03,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:19:03,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:19:08,617 INFO L124 PetriNetUnfolderBase]: 34899/46991 cut-off events. [2024-11-10 10:19:08,617 INFO L125 PetriNetUnfolderBase]: For 4620/4620 co-relation queries the response was YES. [2024-11-10 10:19:08,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100916 conditions, 46991 events. 34899/46991 cut-off events. For 4620/4620 co-relation queries the response was YES. Maximal size of possible extension queue 1516. Compared 277636 event pairs, 3621 based on Foata normal form. 750/47733 useless extension candidates. Maximal degree in co-relation 100901. Up to 20941 conditions per place. [2024-11-10 10:19:08,880 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 65 selfloop transitions, 3 changer transitions 73/146 dead transitions. [2024-11-10 10:19:08,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 146 transitions, 619 flow [2024-11-10 10:19:08,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:19:08,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:19:08,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-11-10 10:19:08,885 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2024-11-10 10:19:08,885 INFO L175 Difference]: Start difference. First operand has 58 places, 38 transitions, 100 flow. Second operand 8 states and 215 transitions. [2024-11-10 10:19:08,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 146 transitions, 619 flow [2024-11-10 10:19:09,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 146 transitions, 597 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-10 10:19:09,950 INFO L231 Difference]: Finished difference. Result has 61 places, 38 transitions, 110 flow [2024-11-10 10:19:09,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=110, PETRI_PLACES=61, PETRI_TRANSITIONS=38} [2024-11-10 10:19:09,951 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2024-11-10 10:19:09,952 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 38 transitions, 110 flow [2024-11-10 10:19:09,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2024-11-10 10:19:09,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:09,952 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] [2024-11-10 10:19:09,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:19:09,953 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 2 more)] === [2024-11-10 10:19:09,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:09,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1983095880, now seen corresponding path program 1 times [2024-11-10 10:19:09,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:09,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066286479] [2024-11-10 10:19:09,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:09,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:10,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:19:10,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:10,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066286479] [2024-11-10 10:19:10,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066286479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:10,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:10,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:19:10,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299867590] [2024-11-10 10:19:10,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:10,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:19:10,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:10,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:19:10,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:19:10,295 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:19:10,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 38 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-11-10 10:19:10,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:10,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:19:10,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:19:13,234 INFO L124 PetriNetUnfolderBase]: 20097/27431 cut-off events. [2024-11-10 10:19:13,235 INFO L125 PetriNetUnfolderBase]: For 8826/8826 co-relation queries the response was YES. [2024-11-10 10:19:13,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62028 conditions, 27431 events. 20097/27431 cut-off events. For 8826/8826 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 155591 event pairs, 2637 based on Foata normal form. 600/28028 useless extension candidates. Maximal degree in co-relation 62011. Up to 20276 conditions per place. [2024-11-10 10:19:13,343 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 54 selfloop transitions, 2 changer transitions 57/118 dead transitions. [2024-11-10 10:19:13,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 118 transitions, 524 flow [2024-11-10 10:19:13,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:19:13,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:19:13,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-11-10 10:19:13,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5650793650793651 [2024-11-10 10:19:13,346 INFO L175 Difference]: Start difference. First operand has 61 places, 38 transitions, 110 flow. Second operand 7 states and 178 transitions. [2024-11-10 10:19:13,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 118 transitions, 524 flow [2024-11-10 10:19:13,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 118 transitions, 487 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-11-10 10:19:13,758 INFO L231 Difference]: Finished difference. Result has 60 places, 38 transitions, 106 flow [2024-11-10 10:19:13,759 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=106, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2024-11-10 10:19:13,759 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2024-11-10 10:19:13,760 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 106 flow [2024-11-10 10:19:13,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-11-10 10:19:13,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:13,760 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] [2024-11-10 10:19:13,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:19:13,760 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 2 more)] === [2024-11-10 10:19:13,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:13,761 INFO L85 PathProgramCache]: Analyzing trace with hash 890588881, now seen corresponding path program 1 times [2024-11-10 10:19:13,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:13,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578329221] [2024-11-10 10:19:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:13,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:15,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:19:15,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:15,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578329221] [2024-11-10 10:19:15,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578329221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:15,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:15,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:19:15,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80909210] [2024-11-10 10:19:15,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:15,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:19:15,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:15,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:19:15,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:19:15,020 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:19:15,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 38 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-11-10 10:19:15,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:15,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:19:15,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:19:17,670 INFO L124 PetriNetUnfolderBase]: 19234/26330 cut-off events. [2024-11-10 10:19:17,671 INFO L125 PetriNetUnfolderBase]: For 6675/6675 co-relation queries the response was YES. [2024-11-10 10:19:17,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58627 conditions, 26330 events. 19234/26330 cut-off events. For 6675/6675 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 143855 event pairs, 4792 based on Foata normal form. 500/26812 useless extension candidates. Maximal degree in co-relation 58611. Up to 20845 conditions per place. [2024-11-10 10:19:17,859 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 48 selfloop transitions, 3 changer transitions 51/107 dead transitions. [2024-11-10 10:19:17,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 107 transitions, 468 flow [2024-11-10 10:19:17,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:19:17,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:19:17,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-11-10 10:19:17,861 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5301587301587302 [2024-11-10 10:19:17,861 INFO L175 Difference]: Start difference. First operand has 60 places, 38 transitions, 106 flow. Second operand 7 states and 167 transitions. [2024-11-10 10:19:17,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 107 transitions, 468 flow [2024-11-10 10:19:18,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 107 transitions, 446 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-10 10:19:18,215 INFO L231 Difference]: Finished difference. Result has 61 places, 40 transitions, 129 flow [2024-11-10 10:19:18,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=129, PETRI_PLACES=61, PETRI_TRANSITIONS=40} [2024-11-10 10:19:18,216 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2024-11-10 10:19:18,216 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 40 transitions, 129 flow [2024-11-10 10:19:18,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-11-10 10:19:18,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:18,217 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] [2024-11-10 10:19:18,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:19:18,217 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 2 more)] === [2024-11-10 10:19:18,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:18,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1214249886, now seen corresponding path program 1 times [2024-11-10 10:19:18,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:18,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895717911] [2024-11-10 10:19:18,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:18,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:18,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:19:18,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:18,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895717911] [2024-11-10 10:19:18,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895717911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:18,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:18,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:19:18,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697121351] [2024-11-10 10:19:18,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:18,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:19:18,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:18,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:19:18,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:19:18,730 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:19:18,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 40 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-11-10 10:19:18,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:18,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:19:18,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:19:21,408 INFO L124 PetriNetUnfolderBase]: 21408/29168 cut-off events. [2024-11-10 10:19:21,409 INFO L125 PetriNetUnfolderBase]: For 14312/14312 co-relation queries the response was YES. [2024-11-10 10:19:21,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70589 conditions, 29168 events. 21408/29168 cut-off events. For 14312/14312 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 159926 event pairs, 14978 based on Foata normal form. 400/29550 useless extension candidates. Maximal degree in co-relation 70572. Up to 22549 conditions per place. [2024-11-10 10:19:21,593 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 48 selfloop transitions, 8 changer transitions 30/91 dead transitions. [2024-11-10 10:19:21,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 91 transitions, 442 flow [2024-11-10 10:19:21,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:19:21,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:19:21,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-11-10 10:19:21,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5148148148148148 [2024-11-10 10:19:21,595 INFO L175 Difference]: Start difference. First operand has 61 places, 40 transitions, 129 flow. Second operand 6 states and 139 transitions. [2024-11-10 10:19:21,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 91 transitions, 442 flow [2024-11-10 10:19:21,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 91 transitions, 429 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-10 10:19:21,888 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 178 flow [2024-11-10 10:19:21,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=178, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2024-11-10 10:19:21,889 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-11-10 10:19:21,889 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 178 flow [2024-11-10 10:19:21,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-11-10 10:19:21,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:21,889 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] [2024-11-10 10:19:21,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:19:21,890 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 2 more)] === [2024-11-10 10:19:21,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:21,890 INFO L85 PathProgramCache]: Analyzing trace with hash 281854134, now seen corresponding path program 2 times [2024-11-10 10:19:21,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:21,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717034152] [2024-11-10 10:19:21,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:21,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:23,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:19:23,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:23,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717034152] [2024-11-10 10:19:23,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717034152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:23,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:23,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 10:19:23,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840039316] [2024-11-10 10:19:23,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:23,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:19:23,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:23,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:19:23,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-10 10:19:23,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:19:23,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 178 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 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) [2024-11-10 10:19:23,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:23,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:19:23,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:19:26,611 INFO L124 PetriNetUnfolderBase]: 22923/31179 cut-off events. [2024-11-10 10:19:26,611 INFO L125 PetriNetUnfolderBase]: For 26158/26158 co-relation queries the response was YES. [2024-11-10 10:19:26,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83634 conditions, 31179 events. 22923/31179 cut-off events. For 26158/26158 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 170695 event pairs, 14681 based on Foata normal form. 480/31641 useless extension candidates. Maximal degree in co-relation 83615. Up to 22224 conditions per place. [2024-11-10 10:19:26,784 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 52 selfloop transitions, 9 changer transitions 55/121 dead transitions. [2024-11-10 10:19:26,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 121 transitions, 653 flow [2024-11-10 10:19:26,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:19:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:19:26,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-11-10 10:19:26,786 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-11-10 10:19:26,786 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 178 flow. Second operand 8 states and 183 transitions. [2024-11-10 10:19:26,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 121 transitions, 653 flow [2024-11-10 10:19:27,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 121 transitions, 630 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-10 10:19:27,018 INFO L231 Difference]: Finished difference. Result has 68 places, 48 transitions, 235 flow [2024-11-10 10:19:27,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=235, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2024-11-10 10:19:27,019 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2024-11-10 10:19:27,019 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 235 flow [2024-11-10 10:19:27,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 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) [2024-11-10 10:19:27,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:27,020 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:19:27,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:19:27,020 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 2 more)] === [2024-11-10 10:19:27,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:27,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1236282090, now seen corresponding path program 1 times [2024-11-10 10:19:27,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:27,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958456260] [2024-11-10 10:19:27,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:27,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:19:27,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:27,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958456260] [2024-11-10 10:19:27,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958456260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:27,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:27,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:19:27,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685358280] [2024-11-10 10:19:27,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:27,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:19:27,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:27,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:19:27,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:19:27,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-11-10 10:19:27,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:19:27,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:27,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-11-10 10:19:27,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:19:30,177 INFO L124 PetriNetUnfolderBase]: 20219/27871 cut-off events. [2024-11-10 10:19:30,177 INFO L125 PetriNetUnfolderBase]: For 54530/54530 co-relation queries the response was YES. [2024-11-10 10:19:30,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86007 conditions, 27871 events. 20219/27871 cut-off events. For 54530/54530 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 158112 event pairs, 2351 based on Foata normal form. 946/28810 useless extension candidates. Maximal degree in co-relation 85985. Up to 15775 conditions per place. [2024-11-10 10:19:30,309 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 94 selfloop transitions, 6 changer transitions 1/106 dead transitions. [2024-11-10 10:19:30,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 106 transitions, 757 flow [2024-11-10 10:19:30,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:19:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:19:30,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-11-10 10:19:30,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-10 10:19:30,311 INFO L175 Difference]: Start difference. First operand has 68 places, 48 transitions, 235 flow. Second operand 4 states and 115 transitions. [2024-11-10 10:19:30,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 106 transitions, 757 flow [2024-11-10 10:19:30,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 106 transitions, 721 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-10 10:19:30,390 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 261 flow [2024-11-10 10:19:30,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-11-10 10:19:30,391 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2024-11-10 10:19:30,391 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 261 flow [2024-11-10 10:19:30,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:19:30,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:30,391 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] [2024-11-10 10:19:30,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 10:19:30,391 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 2 more)] === [2024-11-10 10:19:30,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:30,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1854450285, now seen corresponding path program 1 times [2024-11-10 10:19:30,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:30,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110641067] [2024-11-10 10:19:30,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:30,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:31,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:19:31,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:31,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110641067] [2024-11-10 10:19:31,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110641067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:31,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:31,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 10:19:31,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214070195] [2024-11-10 10:19:31,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:31,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:19:31,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:31,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:19:31,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-10 10:19:31,496 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:19:31,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 261 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 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) [2024-11-10 10:19:31,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:31,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:19:31,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:19:35,457 INFO L124 PetriNetUnfolderBase]: 27215/37225 cut-off events. [2024-11-10 10:19:35,458 INFO L125 PetriNetUnfolderBase]: For 55113/55113 co-relation queries the response was YES. [2024-11-10 10:19:35,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119833 conditions, 37225 events. 27215/37225 cut-off events. For 55113/55113 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 211571 event pairs, 7789 based on Foata normal form. 552/37763 useless extension candidates. Maximal degree in co-relation 119811. Up to 15244 conditions per place. [2024-11-10 10:19:35,694 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 78 selfloop transitions, 11 changer transitions 58/152 dead transitions. [2024-11-10 10:19:35,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 152 transitions, 979 flow [2024-11-10 10:19:35,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:19:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:19:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-11-10 10:19:35,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2024-11-10 10:19:35,696 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 261 flow. Second operand 9 states and 215 transitions. [2024-11-10 10:19:35,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 152 transitions, 979 flow [2024-11-10 10:19:35,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 152 transitions, 939 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-10 10:19:35,768 INFO L231 Difference]: Finished difference. Result has 76 places, 51 transitions, 279 flow [2024-11-10 10:19:35,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=279, PETRI_PLACES=76, PETRI_TRANSITIONS=51} [2024-11-10 10:19:35,768 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 25 predicate places. [2024-11-10 10:19:35,769 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 51 transitions, 279 flow [2024-11-10 10:19:35,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 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) [2024-11-10 10:19:35,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:35,769 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] [2024-11-10 10:19:35,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 10:19:35,769 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 2 more)] === [2024-11-10 10:19:35,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:35,770 INFO L85 PathProgramCache]: Analyzing trace with hash -298640107, now seen corresponding path program 1 times [2024-11-10 10:19:35,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:35,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197356388] [2024-11-10 10:19:35,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:35,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:19:35,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:35,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197356388] [2024-11-10 10:19:35,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197356388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:35,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:35,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:19:35,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807791844] [2024-11-10 10:19:35,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:35,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:19:35,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:35,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:19:35,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:19:35,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-11-10 10:19:35,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 51 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-11-10 10:19:35,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:35,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-11-10 10:19:35,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:19:39,177 INFO L124 PetriNetUnfolderBase]: 19561/27425 cut-off events. [2024-11-10 10:19:39,178 INFO L125 PetriNetUnfolderBase]: For 54630/54630 co-relation queries the response was YES. [2024-11-10 10:19:39,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86386 conditions, 27425 events. 19561/27425 cut-off events. For 54630/54630 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 157768 event pairs, 1765 based on Foata normal form. 1140/28558 useless extension candidates. Maximal degree in co-relation 86359. Up to 12157 conditions per place. [2024-11-10 10:19:39,311 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 110 selfloop transitions, 10 changer transitions 9/134 dead transitions. [2024-11-10 10:19:39,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 134 transitions, 1036 flow [2024-11-10 10:19:39,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:19:39,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:19:39,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-11-10 10:19:39,312 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6577777777777778 [2024-11-10 10:19:39,312 INFO L175 Difference]: Start difference. First operand has 76 places, 51 transitions, 279 flow. Second operand 5 states and 148 transitions. [2024-11-10 10:19:39,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 134 transitions, 1036 flow [2024-11-10 10:19:39,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 134 transitions, 970 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-11-10 10:19:39,412 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 316 flow [2024-11-10 10:19:39,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=316, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2024-11-10 10:19:39,413 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 21 predicate places. [2024-11-10 10:19:39,413 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 316 flow [2024-11-10 10:19:39,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-11-10 10:19:39,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:39,413 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] [2024-11-10 10:19:39,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 10:19:39,414 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 2 more)] === [2024-11-10 10:19:39,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:39,414 INFO L85 PathProgramCache]: Analyzing trace with hash 484171904, now seen corresponding path program 1 times [2024-11-10 10:19:39,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:39,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639199886] [2024-11-10 10:19:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:39,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:19:39,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:39,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639199886] [2024-11-10 10:19:39,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639199886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:39,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:39,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:19:39,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906808120] [2024-11-10 10:19:39,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:39,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:19:39,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:39,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:19:39,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:19:39,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-11-10 10:19:39,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 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) [2024-11-10 10:19:39,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:39,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-11-10 10:19:39,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand