./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:31:00,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:31:00,630 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:31:00,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:31:00,639 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:31:00,666 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:31:00,667 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:31:00,667 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:31:00,668 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:31:00,669 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:31:00,669 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:31:00,669 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:31:00,670 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:31:00,672 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:31:00,673 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:31:00,673 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:31:00,673 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:31:00,673 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:31:00,674 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:31:00,674 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:31:00,674 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:31:00,678 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:31:00,679 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:31:00,679 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:31:00,679 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:31:00,679 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:31:00,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:31:00,680 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:31:00,680 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:31:00,680 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:31:00,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:31:00,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:31:00,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:31:00,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:31:00,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:31:00,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:31:00,682 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:31:00,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:31:00,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:31:00,683 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:31:00,683 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:31:00,683 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:31:00,683 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e [2024-10-11 14:31:00,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:31:00,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:31:00,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:31:00,992 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:31:00,992 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:31:00,993 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2024-10-11 14:31:02,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:31:02,572 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:31:02,573 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2024-10-11 14:31:02,580 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/0b7951e87/94cd7c49a5734c16bc7c60b9e34bbc39/FLAG1f219193f [2024-10-11 14:31:02,593 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/0b7951e87/94cd7c49a5734c16bc7c60b9e34bbc39 [2024-10-11 14:31:02,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:31:02,597 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:31:02,599 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:31:02,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:31:02,604 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:31:02,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:02" (1/1) ... [2024-10-11 14:31:02,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@422900df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:02, skipping insertion in model container [2024-10-11 14:31:02,605 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:02" (1/1) ... [2024-10-11 14:31:02,629 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:31:02,864 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4643,4656] [2024-10-11 14:31:02,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:31:02,895 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:31:02,931 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c[4643,4656] [2024-10-11 14:31:02,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:31:02,958 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:31:02,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:02 WrapperNode [2024-10-11 14:31:02,958 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:31:02,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:31:02,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:31:02,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:31:02,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:02" (1/1) ... [2024-10-11 14:31:02,975 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:02" (1/1) ... [2024-10-11 14:31:03,006 INFO L138 Inliner]: procedures = 24, calls = 53, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 337 [2024-10-11 14:31:03,006 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:31:03,007 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:31:03,007 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:31:03,007 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:31:03,027 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:02" (1/1) ... [2024-10-11 14:31:03,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:02" (1/1) ... [2024-10-11 14:31:03,035 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:02" (1/1) ... [2024-10-11 14:31:03,071 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-11 14:31:03,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:02" (1/1) ... [2024-10-11 14:31:03,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:02" (1/1) ... [2024-10-11 14:31:03,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:02" (1/1) ... [2024-10-11 14:31:03,094 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:02" (1/1) ... [2024-10-11 14:31:03,096 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:02" (1/1) ... [2024-10-11 14:31:03,102 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:02" (1/1) ... [2024-10-11 14:31:03,105 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:31:03,106 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:31:03,106 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:31:03,106 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:31:03,107 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:02" (1/1) ... [2024-10-11 14:31:03,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:31:03,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:31:03,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:31:03,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:31:03,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:31:03,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:31:03,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:31:03,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:31:03,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:31:03,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:31:03,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:31:03,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:31:03,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:31:03,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:31:03,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:31:03,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:31:03,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:31:03,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 14:31:03,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:31:03,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:31:03,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:31:03,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:31:03,184 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:31:03,311 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:31:03,314 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:31:03,920 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:31:03,920 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:31:04,281 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:31:04,282 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-11 14:31:04,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:04 BoogieIcfgContainer [2024-10-11 14:31:04,283 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:31:04,285 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:31:04,286 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:31:04,290 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:31:04,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:31:02" (1/3) ... [2024-10-11 14:31:04,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c11ed1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:04, skipping insertion in model container [2024-10-11 14:31:04,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:02" (2/3) ... [2024-10-11 14:31:04,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c11ed1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:04, skipping insertion in model container [2024-10-11 14:31:04,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:04" (3/3) ... [2024-10-11 14:31:04,293 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2024-10-11 14:31:04,310 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:31:04,310 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:31:04,311 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:31:04,456 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 14:31:04,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 48 transitions, 117 flow [2024-10-11 14:31:04,533 INFO L124 PetriNetUnfolderBase]: 9/45 cut-off events. [2024-10-11 14:31:04,533 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:31:04,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 9/45 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-10-11 14:31:04,537 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 48 transitions, 117 flow [2024-10-11 14:31:04,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 44 transitions, 106 flow [2024-10-11 14:31:04,548 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:31:04,554 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;@502098a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:31:04,554 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 14:31:04,573 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:31:04,573 INFO L124 PetriNetUnfolderBase]: 9/43 cut-off events. [2024-10-11 14:31:04,573 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:31:04,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:04,575 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] [2024-10-11 14:31:04,575 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:31:04,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:04,581 INFO L85 PathProgramCache]: Analyzing trace with hash -102076622, now seen corresponding path program 1 times [2024-10-11 14:31:04,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:04,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186335362] [2024-10-11 14:31:04,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:04,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:04,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:04,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186335362] [2024-10-11 14:31:04,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186335362] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:04,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:04,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:31:04,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294823189] [2024-10-11 14:31:04,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:04,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 14:31:04,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:04,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 14:31:04,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 14:31:04,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-11 14:31:04,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:04,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:04,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-11 14:31:04,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:05,423 INFO L124 PetriNetUnfolderBase]: 2548/3637 cut-off events. [2024-10-11 14:31:05,424 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2024-10-11 14:31:05,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7470 conditions, 3637 events. 2548/3637 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 16610 event pairs, 2146 based on Foata normal form. 0/3229 useless extension candidates. Maximal degree in co-relation 7063. Up to 3626 conditions per place. [2024-10-11 14:31:05,451 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 37 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2024-10-11 14:31:05,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 41 transitions, 174 flow [2024-10-11 14:31:05,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 14:31:05,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 14:31:05,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-10-11 14:31:05,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-10-11 14:31:05,465 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 106 flow. Second operand 2 states and 54 transitions. [2024-10-11 14:31:05,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 41 transitions, 174 flow [2024-10-11 14:31:05,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 162 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 14:31:05,475 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 88 flow [2024-10-11 14:31:05,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2024-10-11 14:31:05,480 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, -5 predicate places. [2024-10-11 14:31:05,481 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 88 flow [2024-10-11 14:31:05,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:05,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:05,481 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] [2024-10-11 14:31:05,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:31:05,482 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:31:05,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:05,484 INFO L85 PathProgramCache]: Analyzing trace with hash 665032564, now seen corresponding path program 1 times [2024-10-11 14:31:05,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:05,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383689749] [2024-10-11 14:31:05,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:05,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:05,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:05,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383689749] [2024-10-11 14:31:05,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383689749] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:05,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:05,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:31:05,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427602224] [2024-10-11 14:31:05,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:05,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:31:05,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:05,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:31:05,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:31:05,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-11 14:31:05,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 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) [2024-10-11 14:31:05,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:05,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-11 14:31:05,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:06,310 INFO L124 PetriNetUnfolderBase]: 3499/4990 cut-off events. [2024-10-11 14:31:06,311 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-10-11 14:31:06,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10072 conditions, 4990 events. 3499/4990 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 25016 event pairs, 876 based on Foata normal form. 1/4374 useless extension candidates. Maximal degree in co-relation 10069. Up to 3852 conditions per place. [2024-10-11 14:31:06,339 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 56 selfloop transitions, 4 changer transitions 1/65 dead transitions. [2024-10-11 14:31:06,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 65 transitions, 263 flow [2024-10-11 14:31:06,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:31:06,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:31:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-10-11 14:31:06,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2024-10-11 14:31:06,343 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 88 flow. Second operand 3 states and 83 transitions. [2024-10-11 14:31:06,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 65 transitions, 263 flow [2024-10-11 14:31:06,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 65 transitions, 263 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:31:06,346 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 114 flow [2024-10-11 14:31:06,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2024-10-11 14:31:06,348 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2024-10-11 14:31:06,348 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 114 flow [2024-10-11 14:31:06,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 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) [2024-10-11 14:31:06,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:06,349 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:31:06,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:31:06,350 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:31:06,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:06,351 INFO L85 PathProgramCache]: Analyzing trace with hash -886347784, now seen corresponding path program 1 times [2024-10-11 14:31:06,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:06,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080644564] [2024-10-11 14:31:06,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:06,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:06,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:06,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:06,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080644564] [2024-10-11 14:31:06,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080644564] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:06,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:06,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:31:06,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103771579] [2024-10-11 14:31:06,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:06,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:31:06,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:06,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:31:06,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:31:06,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-11 14:31:06,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:06,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:06,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-11 14:31:06,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:07,227 INFO L124 PetriNetUnfolderBase]: 4888/7036 cut-off events. [2024-10-11 14:31:07,227 INFO L125 PetriNetUnfolderBase]: For 579/579 co-relation queries the response was YES. [2024-10-11 14:31:07,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15083 conditions, 7036 events. 4888/7036 cut-off events. For 579/579 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 35526 event pairs, 2384 based on Foata normal form. 165/6301 useless extension candidates. Maximal degree in co-relation 15078. Up to 3648 conditions per place. [2024-10-11 14:31:07,263 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 65 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-10-11 14:31:07,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 71 transitions, 310 flow [2024-10-11 14:31:07,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:31:07,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:31:07,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-10-11 14:31:07,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-11 14:31:07,266 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 114 flow. Second operand 3 states and 87 transitions. [2024-10-11 14:31:07,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 71 transitions, 310 flow [2024-10-11 14:31:07,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 71 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:31:07,268 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 118 flow [2024-10-11 14:31:07,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-10-11 14:31:07,269 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-10-11 14:31:07,269 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 118 flow [2024-10-11 14:31:07,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:07,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:07,270 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:31:07,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:31:07,270 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:31:07,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:07,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1401038186, now seen corresponding path program 1 times [2024-10-11 14:31:07,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:07,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386162466] [2024-10-11 14:31:07,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:07,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:07,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:07,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:07,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386162466] [2024-10-11 14:31:07,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386162466] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:07,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:07,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:31:07,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798792542] [2024-10-11 14:31:07,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:07,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:31:07,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:07,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:31:07,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:31:07,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-11 14:31:07,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:07,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:07,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-11 14:31:07,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:07,961 INFO L124 PetriNetUnfolderBase]: 3703/5358 cut-off events. [2024-10-11 14:31:07,961 INFO L125 PetriNetUnfolderBase]: For 658/658 co-relation queries the response was YES. [2024-10-11 14:31:07,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11733 conditions, 5358 events. 3703/5358 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 25780 event pairs, 1275 based on Foata normal form. 90/4779 useless extension candidates. Maximal degree in co-relation 11727. Up to 4000 conditions per place. [2024-10-11 14:31:07,999 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 54 selfloop transitions, 2 changer transitions 5/65 dead transitions. [2024-10-11 14:31:07,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 65 transitions, 285 flow [2024-10-11 14:31:08,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:31:08,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:31:08,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-10-11 14:31:08,001 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-10-11 14:31:08,001 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 118 flow. Second operand 3 states and 82 transitions. [2024-10-11 14:31:08,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 65 transitions, 285 flow [2024-10-11 14:31:08,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:31:08,004 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 124 flow [2024-10-11 14:31:08,004 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-10-11 14:31:08,005 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-10-11 14:31:08,005 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 124 flow [2024-10-11 14:31:08,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:08,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:08,006 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:31:08,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:31:08,006 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:31:08,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:08,007 INFO L85 PathProgramCache]: Analyzing trace with hash -664395841, now seen corresponding path program 1 times [2024-10-11 14:31:08,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:08,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971130706] [2024-10-11 14:31:08,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:08,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:08,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:08,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:08,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971130706] [2024-10-11 14:31:08,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971130706] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:08,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:08,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:31:08,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256845826] [2024-10-11 14:31:08,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:08,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:31:08,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:08,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:31:08,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:31:08,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-11 14:31:08,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:08,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:08,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-11 14:31:08,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:08,561 INFO L124 PetriNetUnfolderBase]: 2561/3734 cut-off events. [2024-10-11 14:31:08,562 INFO L125 PetriNetUnfolderBase]: For 801/801 co-relation queries the response was YES. [2024-10-11 14:31:08,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8246 conditions, 3734 events. 2561/3734 cut-off events. For 801/801 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 16251 event pairs, 1346 based on Foata normal form. 62/3266 useless extension candidates. Maximal degree in co-relation 8239. Up to 2767 conditions per place. [2024-10-11 14:31:08,578 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 48 selfloop transitions, 2 changer transitions 7/61 dead transitions. [2024-10-11 14:31:08,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 275 flow [2024-10-11 14:31:08,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:31:08,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:31:08,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-10-11 14:31:08,581 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-10-11 14:31:08,581 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 124 flow. Second operand 3 states and 76 transitions. [2024-10-11 14:31:08,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 275 flow [2024-10-11 14:31:08,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:31:08,584 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 134 flow [2024-10-11 14:31:08,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-10-11 14:31:08,586 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2024-10-11 14:31:08,587 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 134 flow [2024-10-11 14:31:08,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:08,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:08,588 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:31:08,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:31:08,588 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:31:08,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:08,591 INFO L85 PathProgramCache]: Analyzing trace with hash -802486131, now seen corresponding path program 1 times [2024-10-11 14:31:08,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:08,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257990715] [2024-10-11 14:31:08,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:08,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:08,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:08,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:08,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257990715] [2024-10-11 14:31:08,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257990715] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:08,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:08,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:31:08,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794034017] [2024-10-11 14:31:08,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:08,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:31:08,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:08,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:31:08,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:31:08,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-11 14:31:08,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:08,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:08,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-11 14:31:08,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:09,242 INFO L124 PetriNetUnfolderBase]: 3173/4706 cut-off events. [2024-10-11 14:31:09,242 INFO L125 PetriNetUnfolderBase]: For 773/773 co-relation queries the response was YES. [2024-10-11 14:31:09,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10442 conditions, 4706 events. 3173/4706 cut-off events. For 773/773 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 22250 event pairs, 2856 based on Foata normal form. 56/4044 useless extension candidates. Maximal degree in co-relation 10434. Up to 3723 conditions per place. [2024-10-11 14:31:09,259 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 40 selfloop transitions, 2 changer transitions 30/76 dead transitions. [2024-10-11 14:31:09,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 76 transitions, 346 flow [2024-10-11 14:31:09,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:31:09,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:31:09,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-10-11 14:31:09,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-10-11 14:31:09,261 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 134 flow. Second operand 5 states and 104 transitions. [2024-10-11 14:31:09,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 76 transitions, 346 flow [2024-10-11 14:31:09,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 344 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:31:09,263 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 154 flow [2024-10-11 14:31:09,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-10-11 14:31:09,264 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2024-10-11 14:31:09,265 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 154 flow [2024-10-11 14:31:09,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:09,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:09,265 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:31:09,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:31:09,265 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:31:09,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:09,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1658302438, now seen corresponding path program 1 times [2024-10-11 14:31:09,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:09,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371394115] [2024-10-11 14:31:09,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:09,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:09,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:31:09,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:09,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371394115] [2024-10-11 14:31:09,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371394115] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:09,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:09,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:31:09,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668012296] [2024-10-11 14:31:09,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:09,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:31:09,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:09,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:31:09,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:31:09,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-11 14:31:09,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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) [2024-10-11 14:31:09,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:09,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-11 14:31:09,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:09,871 INFO L124 PetriNetUnfolderBase]: 3336/4961 cut-off events. [2024-10-11 14:31:09,874 INFO L125 PetriNetUnfolderBase]: For 908/908 co-relation queries the response was YES. [2024-10-11 14:31:09,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11118 conditions, 4961 events. 3336/4961 cut-off events. For 908/908 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23602 event pairs, 3018 based on Foata normal form. 14/4235 useless extension candidates. Maximal degree in co-relation 11107. Up to 3721 conditions per place. [2024-10-11 14:31:09,893 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 40 selfloop transitions, 3 changer transitions 30/77 dead transitions. [2024-10-11 14:31:09,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 390 flow [2024-10-11 14:31:09,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:31:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:31:09,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-10-11 14:31:09,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-10-11 14:31:09,895 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 154 flow. Second operand 4 states and 97 transitions. [2024-10-11 14:31:09,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 390 flow [2024-10-11 14:31:09,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 366 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-11 14:31:09,904 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 158 flow [2024-10-11 14:31:09,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-10-11 14:31:09,905 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2024-10-11 14:31:09,905 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 158 flow [2024-10-11 14:31:09,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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) [2024-10-11 14:31:09,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:09,906 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:31:09,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:31:09,906 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:31:09,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:09,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2115243705, now seen corresponding path program 1 times [2024-10-11 14:31:09,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:09,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628803026] [2024-10-11 14:31:09,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:09,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:10,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:31:10,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:10,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628803026] [2024-10-11 14:31:10,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628803026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:10,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:31:10,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:31:10,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249603150] [2024-10-11 14:31:10,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:10,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:31:10,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:10,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:31:10,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:31:10,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-11 14:31:10,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:10,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:10,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-11 14:31:10,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:10,675 INFO L124 PetriNetUnfolderBase]: 3297/4894 cut-off events. [2024-10-11 14:31:10,675 INFO L125 PetriNetUnfolderBase]: For 809/809 co-relation queries the response was YES. [2024-10-11 14:31:10,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10865 conditions, 4894 events. 3297/4894 cut-off events. For 809/809 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 23330 event pairs, 2984 based on Foata normal form. 10/4168 useless extension candidates. Maximal degree in co-relation 10854. Up to 3719 conditions per place. [2024-10-11 14:31:10,697 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 41 selfloop transitions, 3 changer transitions 24/72 dead transitions. [2024-10-11 14:31:10,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 72 transitions, 356 flow [2024-10-11 14:31:10,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:31:10,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:31:10,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-10-11 14:31:10,698 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2024-10-11 14:31:10,698 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 158 flow. Second operand 4 states and 91 transitions. [2024-10-11 14:31:10,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 72 transitions, 356 flow [2024-10-11 14:31:10,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 346 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-11 14:31:10,705 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 166 flow [2024-10-11 14:31:10,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-10-11 14:31:10,707 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-10-11 14:31:10,710 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 166 flow [2024-10-11 14:31:10,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:10,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:10,710 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:31:10,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 14:31:10,711 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:31:10,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:10,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1670686615, now seen corresponding path program 1 times [2024-10-11 14:31:10,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:10,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458499948] [2024-10-11 14:31:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:10,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:31:11,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:11,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458499948] [2024-10-11 14:31:11,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458499948] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:31:11,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993935872] [2024-10-11 14:31:11,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:11,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:11,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:31:11,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:31:11,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:31:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:11,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 14:31:11,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:31:11,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:31:11,246 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:31:11,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993935872] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:31:11,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:31:11,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-11 14:31:11,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216238636] [2024-10-11 14:31:11,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:31:11,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:31:11,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:11,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:31:11,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:31:11,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-11 14:31:11,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:11,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:11,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-11 14:31:11,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:12,057 INFO L124 PetriNetUnfolderBase]: 5255/7615 cut-off events. [2024-10-11 14:31:12,058 INFO L125 PetriNetUnfolderBase]: For 2102/2102 co-relation queries the response was YES. [2024-10-11 14:31:12,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17550 conditions, 7615 events. 5255/7615 cut-off events. For 2102/2102 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 35172 event pairs, 2749 based on Foata normal form. 156/6710 useless extension candidates. Maximal degree in co-relation 17538. Up to 2981 conditions per place. [2024-10-11 14:31:12,085 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 85 selfloop transitions, 9 changer transitions 0/98 dead transitions. [2024-10-11 14:31:12,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 498 flow [2024-10-11 14:31:12,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:31:12,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:31:12,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-10-11 14:31:12,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2024-10-11 14:31:12,087 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 166 flow. Second operand 4 states and 115 transitions. [2024-10-11 14:31:12,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 498 flow [2024-10-11 14:31:12,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 488 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-11 14:31:12,091 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 219 flow [2024-10-11 14:31:12,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-10-11 14:31:12,092 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-10-11 14:31:12,092 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 219 flow [2024-10-11 14:31:12,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:12,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:12,093 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:31:12,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 14:31:12,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:12,295 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:31:12,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:12,296 INFO L85 PathProgramCache]: Analyzing trace with hash -695731987, now seen corresponding path program 1 times [2024-10-11 14:31:12,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:12,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703943420] [2024-10-11 14:31:12,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:12,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:31:12,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:12,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703943420] [2024-10-11 14:31:12,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703943420] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:31:12,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142435105] [2024-10-11 14:31:12,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:12,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:12,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:31:12,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:31:12,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:31:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:12,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:31:12,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:31:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:31:12,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:31:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:31:12,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142435105] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:31:12,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:31:12,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-11 14:31:12,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248101979] [2024-10-11 14:31:12,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:31:12,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:31:12,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:12,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:31:12,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:31:12,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-11 14:31:12,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 219 flow. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:12,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:12,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-11 14:31:12,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:13,855 INFO L124 PetriNetUnfolderBase]: 6007/8805 cut-off events. [2024-10-11 14:31:13,855 INFO L125 PetriNetUnfolderBase]: For 4179/4179 co-relation queries the response was YES. [2024-10-11 14:31:13,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21967 conditions, 8805 events. 6007/8805 cut-off events. For 4179/4179 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 42986 event pairs, 5125 based on Foata normal form. 2/7537 useless extension candidates. Maximal degree in co-relation 21954. Up to 7601 conditions per place. [2024-10-11 14:31:13,885 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 48 selfloop transitions, 3 changer transitions 43/98 dead transitions. [2024-10-11 14:31:13,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 98 transitions, 539 flow [2024-10-11 14:31:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:31:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:31:13,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-10-11 14:31:13,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-10-11 14:31:13,887 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 219 flow. Second operand 7 states and 130 transitions. [2024-10-11 14:31:13,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 98 transitions, 539 flow [2024-10-11 14:31:13,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 98 transitions, 531 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-10-11 14:31:13,894 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 235 flow [2024-10-11 14:31:13,895 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=235, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-10-11 14:31:13,895 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2024-10-11 14:31:13,895 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 235 flow [2024-10-11 14:31:13,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:13,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:13,896 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:31:13,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 14:31:14,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:14,101 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:31:14,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:14,102 INFO L85 PathProgramCache]: Analyzing trace with hash 231276410, now seen corresponding path program 2 times [2024-10-11 14:31:14,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:14,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806717371] [2024-10-11 14:31:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:14,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:14,338 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:31:14,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:14,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806717371] [2024-10-11 14:31:14,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806717371] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:31:14,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044105111] [2024-10-11 14:31:14,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:31:14,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:14,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:31:14,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:31:14,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:31:14,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:31:14,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:31:14,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:31:14,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:31:14,672 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:31:14,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:31:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:31:15,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044105111] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:31:15,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:31:15,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-11 14:31:15,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505453781] [2024-10-11 14:31:15,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:31:15,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 14:31:15,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:15,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 14:31:15,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-10-11 14:31:15,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-11 14:31:15,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 235 flow. Second operand has 14 states, 14 states have (on average 14.357142857142858) internal successors, (201), 14 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:15,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:15,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-11 14:31:15,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:31:15,880 INFO L124 PetriNetUnfolderBase]: 6488/9654 cut-off events. [2024-10-11 14:31:15,880 INFO L125 PetriNetUnfolderBase]: For 5770/5770 co-relation queries the response was YES. [2024-10-11 14:31:15,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24156 conditions, 9654 events. 6488/9654 cut-off events. For 5770/5770 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 48938 event pairs, 5339 based on Foata normal form. 345/8634 useless extension candidates. Maximal degree in co-relation 24138. Up to 7598 conditions per place. [2024-10-11 14:31:15,921 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 46 selfloop transitions, 6 changer transitions 55/111 dead transitions. [2024-10-11 14:31:15,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 111 transitions, 659 flow [2024-10-11 14:31:15,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:31:15,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:31:15,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-10-11 14:31:15,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-10-11 14:31:15,923 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 235 flow. Second operand 9 states and 153 transitions. [2024-10-11 14:31:15,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 111 transitions, 659 flow [2024-10-11 14:31:15,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 111 transitions, 637 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-10-11 14:31:15,941 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 249 flow [2024-10-11 14:31:15,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=249, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-10-11 14:31:15,942 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 27 predicate places. [2024-10-11 14:31:15,942 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 249 flow [2024-10-11 14:31:15,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.357142857142858) internal successors, (201), 14 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:15,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:31:15,943 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:31:15,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 14:31:16,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:16,144 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:31:16,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:31:16,144 INFO L85 PathProgramCache]: Analyzing trace with hash 906033355, now seen corresponding path program 3 times [2024-10-11 14:31:16,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:31:16,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691450035] [2024-10-11 14:31:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:31:16,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:31:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:31:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:21,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:31:21,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691450035] [2024-10-11 14:31:21,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691450035] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:31:21,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364909714] [2024-10-11 14:31:21,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:31:21,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:31:21,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:31:21,025 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:31:21,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:31:21,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 14:31:21,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:31:21,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-10-11 14:31:21,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:31:21,228 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 [2024-10-11 14:31:21,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-11 14:31:21,462 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-11 14:31:21,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-10-11 14:31:21,547 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 8 treesize of output 1 [2024-10-11 14:31:21,624 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 8 treesize of output 1 [2024-10-11 14:31:21,708 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-11 14:31:21,709 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 [2024-10-11 14:31:21,803 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 [2024-10-11 14:31:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:23,375 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:31:34,019 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:31:34,019 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 84 [2024-10-11 14:31:34,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:31:34,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2541 treesize of output 2343 [2024-10-11 14:31:34,101 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:31:34,102 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 1377 treesize of output 1180 [2024-10-11 14:31:35,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-10-11 14:31:35,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:31:35,559 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 239 treesize of output 131 [2024-10-11 14:31:35,595 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:31:35,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3326 treesize of output 3084 [2024-10-11 14:31:35,706 INFO L349 Elim1Store]: treesize reduction 15, result has 73.2 percent of original size [2024-10-11 14:31:35,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1720 treesize of output 1466 [2024-10-11 14:31:38,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-10-11 14:31:38,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-11 14:31:38,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-10-11 14:31:38,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-10-11 14:31:39,161 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-11 14:31:39,162 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 380 treesize of output 314 [2024-10-11 14:31:39,321 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:31:39,322 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 337 treesize of output 181 [2024-10-11 14:31:39,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:31:39,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3716 treesize of output 3446 [2024-10-11 14:31:39,452 INFO L349 Elim1Store]: treesize reduction 23, result has 73.6 percent of original size [2024-10-11 14:31:39,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 2148 treesize of output 1833 [2024-10-11 14:31:48,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-10-11 14:31:48,340 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-11 14:31:48,366 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-11 14:31:48,374 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-11 14:31:48,404 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-11 14:31:48,414 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-11 14:31:48,476 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-11 14:31:48,510 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-11 14:31:48,542 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-11 14:31:48,611 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-11 14:31:48,619 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-11 14:31:48,633 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-11 14:31:48,645 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-11 14:31:49,544 INFO L349 Elim1Store]: treesize reduction 27, result has 27.0 percent of original size [2024-10-11 14:31:49,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 531 treesize of output 419 [2024-10-11 14:31:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:31:50,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364909714] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:31:50,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:31:50,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 20] total 56 [2024-10-11 14:31:50,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224281652] [2024-10-11 14:31:50,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:31:50,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-10-11 14:31:50,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:31:50,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-10-11 14:31:50,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=2759, Unknown=2, NotChecked=0, Total=3192 [2024-10-11 14:31:50,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 48 [2024-10-11 14:31:50,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 249 flow. Second operand has 57 states, 57 states have (on average 9.210526315789474) internal successors, (525), 57 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:31:50,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:31:50,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 48 [2024-10-11 14:31:50,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:32:00,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 14:32:04,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 14:32:08,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 14:32:20,450 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]