./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:52:00,981 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:52:01,047 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:52:01,050 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:52:01,051 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:52:01,065 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:52:01,065 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:52:01,065 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:52:01,066 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:52:01,066 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:52:01,066 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:52:01,066 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:52:01,067 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:52:01,067 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:52:01,067 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:52:01,068 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:52:01,068 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:52:01,068 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:52:01,068 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:52:01,069 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:52:01,069 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:52:01,072 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:52:01,072 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:52:01,072 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:52:01,072 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:52:01,073 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:52:01,073 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:52:01,073 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:52:01,073 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:52:01,073 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:52:01,073 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:52:01,074 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:52:01,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:52:01,074 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:52:01,074 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:52:01,074 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:52:01,074 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:52:01,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:52:01,075 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:52:01,075 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:52:01,075 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:52:01,076 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:52:01,076 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 [2024-11-19 01:52:01,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:52:01,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:52:01,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:52:01,280 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:52:01,280 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:52:01,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2024-11-19 01:52:02,574 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:52:02,717 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:52:02,718 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2024-11-19 01:52:02,729 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d082599fc/1a3b82f1262a407699c3ccd9fd651167/FLAG1d50d0a0d [2024-11-19 01:52:02,739 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d082599fc/1a3b82f1262a407699c3ccd9fd651167 [2024-11-19 01:52:02,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:52:02,742 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:52:02,743 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:52:02,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:52:02,747 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:52:02,747 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:52:02" (1/1) ... [2024-11-19 01:52:02,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4744833e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:02, skipping insertion in model container [2024-11-19 01:52:02,748 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:52:02" (1/1) ... [2024-11-19 01:52:02,772 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:52:02,942 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c[2625,2638] [2024-11-19 01:52:02,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:52:02,955 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:52:02,969 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c[2625,2638] [2024-11-19 01:52:02,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:52:02,984 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:52:02,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:02 WrapperNode [2024-11-19 01:52:02,985 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:52:02,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:52:02,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:52:02,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:52:02,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:02" (1/1) ... [2024-11-19 01:52:02,999 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:02" (1/1) ... [2024-11-19 01:52:03,013 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 87 [2024-11-19 01:52:03,013 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:52:03,014 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:52:03,014 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:52:03,014 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:52:03,022 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:02" (1/1) ... [2024-11-19 01:52:03,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:02" (1/1) ... [2024-11-19 01:52:03,028 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:02" (1/1) ... [2024-11-19 01:52:03,039 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 01:52:03,039 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:02" (1/1) ... [2024-11-19 01:52:03,039 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:02" (1/1) ... [2024-11-19 01:52:03,043 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:02" (1/1) ... [2024-11-19 01:52:03,046 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:02" (1/1) ... [2024-11-19 01:52:03,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:02" (1/1) ... [2024-11-19 01:52:03,048 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:02" (1/1) ... [2024-11-19 01:52:03,049 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:52:03,050 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:52:03,050 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:52:03,050 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:52:03,051 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:02" (1/1) ... [2024-11-19 01:52:03,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:52:03,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:03,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 01:52:03,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 01:52:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:52:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:52:03,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:52:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:52:03,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:52:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 01:52:03,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 01:52:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:52:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:52:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:52:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:52:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 01:52:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 01:52:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 01:52:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:52:03,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:52:03,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:52:03,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:52:03,119 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:52:03,204 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:52:03,207 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:52:03,454 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:52:03,454 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:52:03,607 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:52:03,607 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 01:52:03,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:52:03 BoogieIcfgContainer [2024-11-19 01:52:03,608 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:52:03,611 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:52:03,611 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:52:03,614 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:52:03,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:52:02" (1/3) ... [2024-11-19 01:52:03,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162c044d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:52:03, skipping insertion in model container [2024-11-19 01:52:03,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:02" (2/3) ... [2024-11-19 01:52:03,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162c044d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:52:03, skipping insertion in model container [2024-11-19 01:52:03,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:52:03" (3/3) ... [2024-11-19 01:52:03,617 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2024-11-19 01:52:03,629 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:52:03,629 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:52:03,629 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:52:03,673 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 01:52:03,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 87 flow [2024-11-19 01:52:03,728 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-19 01:52:03,728 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:52:03,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 4/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-11-19 01:52:03,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 87 flow [2024-11-19 01:52:03,733 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 29 transitions, 76 flow [2024-11-19 01:52:03,740 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:52:03,746 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;@34e810a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:52:03,746 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 01:52:03,757 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:52:03,758 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-19 01:52:03,758 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:52:03,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:03,759 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:03,760 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:03,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:03,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1958378008, now seen corresponding path program 1 times [2024-11-19 01:52:03,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:03,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129257974] [2024-11-19 01:52:03,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:03,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:04,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:04,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:04,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129257974] [2024-11-19 01:52:04,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129257974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:04,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:04,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:52:04,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455512223] [2024-11-19 01:52:04,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:04,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:52:04,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:04,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:52:04,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:52:04,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-19 01:52:04,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:04,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:04,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-19 01:52:04,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:04,519 INFO L124 PetriNetUnfolderBase]: 617/956 cut-off events. [2024-11-19 01:52:04,520 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-11-19 01:52:04,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1951 conditions, 956 events. 617/956 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3838 event pairs, 126 based on Foata normal form. 1/952 useless extension candidates. Maximal degree in co-relation 1717. Up to 677 conditions per place. [2024-11-19 01:52:04,532 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 37 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2024-11-19 01:52:04,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 209 flow [2024-11-19 01:52:04,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:52:04,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:52:04,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-11-19 01:52:04,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-11-19 01:52:04,545 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 76 flow. Second operand 3 states and 64 transitions. [2024-11-19 01:52:04,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 209 flow [2024-11-19 01:52:04,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 01:52:04,553 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 90 flow [2024-11-19 01:52:04,554 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2024-11-19 01:52:04,558 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2024-11-19 01:52:04,558 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 90 flow [2024-11-19 01:52:04,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:04,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:04,559 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:04,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:52:04,559 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:04,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:04,560 INFO L85 PathProgramCache]: Analyzing trace with hash -2056652879, now seen corresponding path program 1 times [2024-11-19 01:52:04,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:04,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405231925] [2024-11-19 01:52:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:04,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:04,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:04,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405231925] [2024-11-19 01:52:04,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405231925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:04,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:04,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:52:04,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102332033] [2024-11-19 01:52:04,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:04,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:52:04,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:04,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:52:04,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:52:04,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-19 01:52:04,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:04,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:04,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-19 01:52:04,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:04,823 INFO L124 PetriNetUnfolderBase]: 617/965 cut-off events. [2024-11-19 01:52:04,823 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-11-19 01:52:04,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2170 conditions, 965 events. 617/965 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4063 event pairs, 407 based on Foata normal form. 0/957 useless extension candidates. Maximal degree in co-relation 812. Up to 895 conditions per place. [2024-11-19 01:52:04,829 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 27 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-11-19 01:52:04,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 150 flow [2024-11-19 01:52:04,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:52:04,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:52:04,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-11-19 01:52:04,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-11-19 01:52:04,831 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 90 flow. Second operand 3 states and 48 transitions. [2024-11-19 01:52:04,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 150 flow [2024-11-19 01:52:04,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:52:04,833 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 98 flow [2024-11-19 01:52:04,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2024-11-19 01:52:04,835 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-11-19 01:52:04,835 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 98 flow [2024-11-19 01:52:04,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:04,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:04,835 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:04,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:52:04,836 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:04,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:04,837 INFO L85 PathProgramCache]: Analyzing trace with hash -448016717, now seen corresponding path program 1 times [2024-11-19 01:52:04,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:04,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472313533] [2024-11-19 01:52:04,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:04,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:04,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:52:04,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:04,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472313533] [2024-11-19 01:52:04,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472313533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:04,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:04,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:52:04,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957215261] [2024-11-19 01:52:04,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:04,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:52:04,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:04,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:52:04,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:52:04,915 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:52:04,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:04,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:04,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:52:04,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:05,039 INFO L124 PetriNetUnfolderBase]: 790/1159 cut-off events. [2024-11-19 01:52:05,039 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2024-11-19 01:52:05,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2573 conditions, 1159 events. 790/1159 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4529 event pairs, 246 based on Foata normal form. 0/1114 useless extension candidates. Maximal degree in co-relation 2560. Up to 576 conditions per place. [2024-11-19 01:52:05,045 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 40 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-11-19 01:52:05,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 47 transitions, 224 flow [2024-11-19 01:52:05,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:52:05,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:52:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-19 01:52:05,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-11-19 01:52:05,046 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 98 flow. Second operand 4 states and 63 transitions. [2024-11-19 01:52:05,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 47 transitions, 224 flow [2024-11-19 01:52:05,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 218 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-19 01:52:05,047 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 113 flow [2024-11-19 01:52:05,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-19 01:52:05,048 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-11-19 01:52:05,049 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 113 flow [2024-11-19 01:52:05,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:05,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:05,049 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:05,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:52:05,049 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:05,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:05,050 INFO L85 PathProgramCache]: Analyzing trace with hash -164649811, now seen corresponding path program 1 times [2024-11-19 01:52:05,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:05,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545841913] [2024-11-19 01:52:05,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:05,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:05,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:05,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:05,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545841913] [2024-11-19 01:52:05,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545841913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:05,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292832224] [2024-11-19 01:52:05,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:05,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:05,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:05,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:05,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:52:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:05,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:52:05,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:05,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:05,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:05,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292832224] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:05,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:52:05,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-19 01:52:05,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544021251] [2024-11-19 01:52:05,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:05,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:52:05,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:05,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:52:05,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:52:05,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:52:05,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:05,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:05,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:52:05,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:05,431 INFO L124 PetriNetUnfolderBase]: 850/1295 cut-off events. [2024-11-19 01:52:05,431 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2024-11-19 01:52:05,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3227 conditions, 1295 events. 850/1295 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5466 event pairs, 256 based on Foata normal form. 0/1243 useless extension candidates. Maximal degree in co-relation 3207. Up to 670 conditions per place. [2024-11-19 01:52:05,438 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 41 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2024-11-19 01:52:05,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 257 flow [2024-11-19 01:52:05,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:52:05,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:52:05,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-11-19 01:52:05,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-11-19 01:52:05,439 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 113 flow. Second operand 5 states and 72 transitions. [2024-11-19 01:52:05,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 257 flow [2024-11-19 01:52:05,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:52:05,442 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 132 flow [2024-11-19 01:52:05,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-11-19 01:52:05,442 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2024-11-19 01:52:05,442 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 132 flow [2024-11-19 01:52:05,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:05,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:05,443 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:05,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:52:05,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:05,647 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:05,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:05,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1682656032, now seen corresponding path program 1 times [2024-11-19 01:52:05,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:05,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228699431] [2024-11-19 01:52:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:05,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:06,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:06,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228699431] [2024-11-19 01:52:06,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228699431] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:06,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998787393] [2024-11-19 01:52:06,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:06,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:06,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:06,259 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:06,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:52:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:06,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 01:52:06,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:06,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:52:06,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-11-19 01:52:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:06,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:08,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 225 treesize of output 207 [2024-11-19 01:52:08,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:52:08,504 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 260 treesize of output 290 [2024-11-19 01:52:32,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 294 treesize of output 264 [2024-11-19 01:52:32,478 INFO L349 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2024-11-19 01:52:32,479 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 387 treesize of output 1 [2024-11-19 01:52:32,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:32,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998787393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:32,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:32,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2024-11-19 01:52:32,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500314656] [2024-11-19 01:52:32,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:32,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 01:52:32,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:32,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 01:52:32,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:52:32,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:52:32,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 132 flow. Second operand has 24 states, 24 states have (on average 8.708333333333334) internal successors, (209), 24 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:32,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:32,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:52:32,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:34,440 INFO L124 PetriNetUnfolderBase]: 1841/2767 cut-off events. [2024-11-19 01:52:34,441 INFO L125 PetriNetUnfolderBase]: For 1740/1740 co-relation queries the response was YES. [2024-11-19 01:52:34,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7675 conditions, 2767 events. 1841/2767 cut-off events. For 1740/1740 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12710 event pairs, 98 based on Foata normal form. 1/2767 useless extension candidates. Maximal degree in co-relation 5619. Up to 1375 conditions per place. [2024-11-19 01:52:34,455 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 137 selfloop transitions, 57 changer transitions 1/199 dead transitions. [2024-11-19 01:52:34,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 199 transitions, 1067 flow [2024-11-19 01:52:34,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 01:52:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 01:52:34,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 321 transitions. [2024-11-19 01:52:34,460 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2024-11-19 01:52:34,460 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 132 flow. Second operand 21 states and 321 transitions. [2024-11-19 01:52:34,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 199 transitions, 1067 flow [2024-11-19 01:52:34,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 199 transitions, 1050 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 01:52:34,468 INFO L231 Difference]: Finished difference. Result has 64 places, 91 transitions, 543 flow [2024-11-19 01:52:34,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=543, PETRI_PLACES=64, PETRI_TRANSITIONS=91} [2024-11-19 01:52:34,469 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2024-11-19 01:52:34,470 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 91 transitions, 543 flow [2024-11-19 01:52:34,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.708333333333334) internal successors, (209), 24 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:34,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:34,471 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:34,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:52:34,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:34,672 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:34,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:34,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1004642878, now seen corresponding path program 2 times [2024-11-19 01:52:34,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:34,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063347345] [2024-11-19 01:52:34,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:52:34,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:34,700 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:34,701 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:35,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:35,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:35,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063347345] [2024-11-19 01:52:35,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063347345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:35,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784001288] [2024-11-19 01:52:35,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:52:35,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:35,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:35,118 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:35,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:52:35,181 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:35,181 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:35,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 01:52:35,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:35,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 30 [2024-11-19 01:52:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:35,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:35,591 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:52:35,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 75 [2024-11-19 01:52:35,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:35,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784001288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:35,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:35,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2024-11-19 01:52:35,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480335441] [2024-11-19 01:52:35,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:35,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 01:52:35,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:35,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 01:52:35,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-19 01:52:35,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-19 01:52:35,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 91 transitions, 543 flow. Second operand has 21 states, 21 states have (on average 10.095238095238095) internal successors, (212), 21 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:35,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:35,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-19 01:52:35,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:36,758 INFO L124 PetriNetUnfolderBase]: 1618/2636 cut-off events. [2024-11-19 01:52:36,759 INFO L125 PetriNetUnfolderBase]: For 3701/3709 co-relation queries the response was YES. [2024-11-19 01:52:36,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8571 conditions, 2636 events. 1618/2636 cut-off events. For 3701/3709 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 13803 event pairs, 122 based on Foata normal form. 2/2638 useless extension candidates. Maximal degree in co-relation 8009. Up to 1669 conditions per place. [2024-11-19 01:52:36,776 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 139 selfloop transitions, 89 changer transitions 1/235 dead transitions. [2024-11-19 01:52:36,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 235 transitions, 1631 flow [2024-11-19 01:52:36,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 01:52:36,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 01:52:36,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 316 transitions. [2024-11-19 01:52:36,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.455988455988456 [2024-11-19 01:52:36,779 INFO L175 Difference]: Start difference. First operand has 64 places, 91 transitions, 543 flow. Second operand 21 states and 316 transitions. [2024-11-19 01:52:36,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 235 transitions, 1631 flow [2024-11-19 01:52:36,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 235 transitions, 1469 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-11-19 01:52:36,793 INFO L231 Difference]: Finished difference. Result has 91 places, 150 transitions, 1050 flow [2024-11-19 01:52:36,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1050, PETRI_PLACES=91, PETRI_TRANSITIONS=150} [2024-11-19 01:52:36,796 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 56 predicate places. [2024-11-19 01:52:36,797 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 150 transitions, 1050 flow [2024-11-19 01:52:36,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.095238095238095) internal successors, (212), 21 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:36,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:36,797 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:36,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:52:36,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:36,998 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:36,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:36,998 INFO L85 PathProgramCache]: Analyzing trace with hash -758057548, now seen corresponding path program 3 times [2024-11-19 01:52:36,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:36,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530066457] [2024-11-19 01:52:36,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:52:36,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:37,026 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:52:37,030 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:37,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:37,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530066457] [2024-11-19 01:52:37,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530066457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:37,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145347869] [2024-11-19 01:52:37,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:52:37,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:37,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:37,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:37,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:52:37,507 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:52:37,507 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:37,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 01:52:37,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:37,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-11-19 01:52:37,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:37,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:37,890 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:52:37,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 75 [2024-11-19 01:52:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:38,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145347869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:38,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:38,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 22 [2024-11-19 01:52:38,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099075454] [2024-11-19 01:52:38,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:38,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 01:52:38,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:38,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 01:52:38,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-11-19 01:52:38,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-19 01:52:38,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 150 transitions, 1050 flow. Second operand has 23 states, 23 states have (on average 9.826086956521738) internal successors, (226), 23 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:38,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:38,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-19 01:52:38,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:39,237 INFO L124 PetriNetUnfolderBase]: 2145/3482 cut-off events. [2024-11-19 01:52:39,237 INFO L125 PetriNetUnfolderBase]: For 8729/8751 co-relation queries the response was YES. [2024-11-19 01:52:39,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13342 conditions, 3482 events. 2145/3482 cut-off events. For 8729/8751 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 19388 event pairs, 248 based on Foata normal form. 24/3506 useless extension candidates. Maximal degree in co-relation 12766. Up to 2362 conditions per place. [2024-11-19 01:52:39,255 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 193 selfloop transitions, 97 changer transitions 1/297 dead transitions. [2024-11-19 01:52:39,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 297 transitions, 2411 flow [2024-11-19 01:52:39,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 01:52:39,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-19 01:52:39,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 372 transitions. [2024-11-19 01:52:39,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43356643356643354 [2024-11-19 01:52:39,257 INFO L175 Difference]: Start difference. First operand has 91 places, 150 transitions, 1050 flow. Second operand 26 states and 372 transitions. [2024-11-19 01:52:39,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 297 transitions, 2411 flow [2024-11-19 01:52:39,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 297 transitions, 2398 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-19 01:52:39,273 INFO L231 Difference]: Finished difference. Result has 119 places, 204 transitions, 1675 flow [2024-11-19 01:52:39,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1675, PETRI_PLACES=119, PETRI_TRANSITIONS=204} [2024-11-19 01:52:39,273 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 84 predicate places. [2024-11-19 01:52:39,273 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 204 transitions, 1675 flow [2024-11-19 01:52:39,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.826086956521738) internal successors, (226), 23 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:39,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:39,274 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:39,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 01:52:39,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:39,474 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:39,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:39,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2101789688, now seen corresponding path program 4 times [2024-11-19 01:52:39,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:39,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378068403] [2024-11-19 01:52:39,475 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:52:39,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:39,491 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:52:39,491 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:39,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:39,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378068403] [2024-11-19 01:52:39,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378068403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:39,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599661130] [2024-11-19 01:52:39,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:52:39,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:39,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:39,786 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:39,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 01:52:39,841 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:52:39,841 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:39,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 01:52:39,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:39,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:52:40,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-11-19 01:52:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:40,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:41,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 96 [2024-11-19 01:52:41,345 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:52:41,345 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 125 treesize of output 119 [2024-11-19 01:52:41,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 166 [2024-11-19 01:52:41,655 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-19 01:52:41,655 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 214 treesize of output 1 [2024-11-19 01:52:41,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 205 [2024-11-19 01:52:41,668 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-19 01:52:41,668 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 311 treesize of output 1 [2024-11-19 01:52:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:41,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599661130] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:41,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:41,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2024-11-19 01:52:41,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706152153] [2024-11-19 01:52:41,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:41,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 01:52:41,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:41,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 01:52:41,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:52:41,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:52:41,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 204 transitions, 1675 flow. Second operand has 24 states, 24 states have (on average 8.625) internal successors, (207), 24 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:41,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:41,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:52:41,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:44,029 INFO L124 PetriNetUnfolderBase]: 3567/5694 cut-off events. [2024-11-19 01:52:44,029 INFO L125 PetriNetUnfolderBase]: For 16779/16803 co-relation queries the response was YES. [2024-11-19 01:52:44,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22969 conditions, 5694 events. 3567/5694 cut-off events. For 16779/16803 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 34121 event pairs, 450 based on Foata normal form. 11/5696 useless extension candidates. Maximal degree in co-relation 21922. Up to 3550 conditions per place. [2024-11-19 01:52:44,065 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 236 selfloop transitions, 156 changer transitions 2/399 dead transitions. [2024-11-19 01:52:44,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 399 transitions, 3606 flow [2024-11-19 01:52:44,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-19 01:52:44,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-19 01:52:44,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 435 transitions. [2024-11-19 01:52:44,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-11-19 01:52:44,068 INFO L175 Difference]: Start difference. First operand has 119 places, 204 transitions, 1675 flow. Second operand 33 states and 435 transitions. [2024-11-19 01:52:44,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 399 transitions, 3606 flow [2024-11-19 01:52:44,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 399 transitions, 3427 flow, removed 36 selfloop flow, removed 12 redundant places. [2024-11-19 01:52:44,111 INFO L231 Difference]: Finished difference. Result has 150 places, 284 transitions, 2688 flow [2024-11-19 01:52:44,111 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2688, PETRI_PLACES=150, PETRI_TRANSITIONS=284} [2024-11-19 01:52:44,112 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 115 predicate places. [2024-11-19 01:52:44,112 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 284 transitions, 2688 flow [2024-11-19 01:52:44,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.625) internal successors, (207), 24 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:44,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:44,112 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:44,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 01:52:44,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:44,317 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:44,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:44,317 INFO L85 PathProgramCache]: Analyzing trace with hash 2126374216, now seen corresponding path program 5 times [2024-11-19 01:52:44,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:44,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070968097] [2024-11-19 01:52:44,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:52:44,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:44,333 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:44,333 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:44,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:44,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070968097] [2024-11-19 01:52:44,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070968097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:44,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230322230] [2024-11-19 01:52:44,865 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:52:44,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:44,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:44,867 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:44,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 01:52:44,917 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:44,917 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:44,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 01:52:44,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:44,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:52:45,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-11-19 01:52:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:45,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:47,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 166 [2024-11-19 01:52:47,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:52:47,057 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 214 treesize of output 218 [2024-11-19 01:52:51,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 96 [2024-11-19 01:52:51,052 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 01:52:51,052 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 125 treesize of output 115 [2024-11-19 01:52:51,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 205 [2024-11-19 01:52:51,211 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-19 01:52:51,211 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 311 treesize of output 1 [2024-11-19 01:52:51,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:51,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230322230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:51,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:51,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2024-11-19 01:52:51,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224502893] [2024-11-19 01:52:51,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:51,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-19 01:52:51,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:51,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-19 01:52:51,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2024-11-19 01:52:51,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-19 01:52:51,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 284 transitions, 2688 flow. Second operand has 29 states, 29 states have (on average 7.586206896551724) internal successors, (220), 29 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:51,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:51,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-19 01:52:51,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:54,990 INFO L124 PetriNetUnfolderBase]: 6361/9253 cut-off events. [2024-11-19 01:52:54,990 INFO L125 PetriNetUnfolderBase]: For 33526/33526 co-relation queries the response was YES. [2024-11-19 01:52:55,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40955 conditions, 9253 events. 6361/9253 cut-off events. For 33526/33526 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 50193 event pairs, 759 based on Foata normal form. 4/9254 useless extension candidates. Maximal degree in co-relation 40564. Up to 5735 conditions per place. [2024-11-19 01:52:55,052 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 337 selfloop transitions, 256 changer transitions 2/597 dead transitions. [2024-11-19 01:52:55,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 597 transitions, 6265 flow [2024-11-19 01:52:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-19 01:52:55,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-19 01:52:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 441 transitions. [2024-11-19 01:52:55,054 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-11-19 01:52:55,054 INFO L175 Difference]: Start difference. First operand has 150 places, 284 transitions, 2688 flow. Second operand 33 states and 441 transitions. [2024-11-19 01:52:55,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 597 transitions, 6265 flow [2024-11-19 01:52:55,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 597 transitions, 5913 flow, removed 148 selfloop flow, removed 6 redundant places. [2024-11-19 01:52:55,246 INFO L231 Difference]: Finished difference. Result has 186 places, 439 transitions, 4768 flow [2024-11-19 01:52:55,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2454, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4768, PETRI_PLACES=186, PETRI_TRANSITIONS=439} [2024-11-19 01:52:55,247 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 151 predicate places. [2024-11-19 01:52:55,247 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 439 transitions, 4768 flow [2024-11-19 01:52:55,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.586206896551724) internal successors, (220), 29 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:55,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:55,248 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] [2024-11-19 01:52:55,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 01:52:55,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:55,449 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:55,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:55,450 INFO L85 PathProgramCache]: Analyzing trace with hash -731213874, now seen corresponding path program 6 times [2024-11-19 01:52:55,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:55,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114041336] [2024-11-19 01:52:55,450 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:52:55,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:55,470 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:52:55,470 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:55,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:55,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114041336] [2024-11-19 01:52:55,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114041336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:55,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431958876] [2024-11-19 01:52:55,531 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:52:55,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:55,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:55,532 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:55,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 01:52:55,593 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:52:55,593 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:55,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:52:55,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:55,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:55,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431958876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:55,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:55,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-19 01:52:55,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046232694] [2024-11-19 01:52:55,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:55,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:52:55,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:55,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:52:55,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:52:55,703 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:52:55,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 439 transitions, 4768 flow. Second operand has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:55,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:55,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:52:55,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:56,707 INFO L124 PetriNetUnfolderBase]: 6387/9752 cut-off events. [2024-11-19 01:52:56,707 INFO L125 PetriNetUnfolderBase]: For 56781/56959 co-relation queries the response was YES. [2024-11-19 01:52:56,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49629 conditions, 9752 events. 6387/9752 cut-off events. For 56781/56959 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 59400 event pairs, 1079 based on Foata normal form. 197/9942 useless extension candidates. Maximal degree in co-relation 49558. Up to 2832 conditions per place. [2024-11-19 01:52:56,769 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 529 selfloop transitions, 62 changer transitions 0/596 dead transitions. [2024-11-19 01:52:56,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 596 transitions, 7397 flow [2024-11-19 01:52:56,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:52:56,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:52:56,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-11-19 01:52:56,770 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2024-11-19 01:52:56,770 INFO L175 Difference]: Start difference. First operand has 186 places, 439 transitions, 4768 flow. Second operand 10 states and 171 transitions. [2024-11-19 01:52:56,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 596 transitions, 7397 flow [2024-11-19 01:52:56,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 596 transitions, 7022 flow, removed 164 selfloop flow, removed 8 redundant places. [2024-11-19 01:52:56,978 INFO L231 Difference]: Finished difference. Result has 189 places, 445 transitions, 4693 flow [2024-11-19 01:52:56,978 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4392, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4693, PETRI_PLACES=189, PETRI_TRANSITIONS=445} [2024-11-19 01:52:56,978 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 154 predicate places. [2024-11-19 01:52:56,978 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 445 transitions, 4693 flow [2024-11-19 01:52:56,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:56,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:56,979 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] [2024-11-19 01:52:56,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 01:52:57,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:57,179 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:57,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:57,180 INFO L85 PathProgramCache]: Analyzing trace with hash 393006415, now seen corresponding path program 7 times [2024-11-19 01:52:57,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:57,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146152116] [2024-11-19 01:52:57,180 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:52:57,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:57,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:57,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146152116] [2024-11-19 01:52:57,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146152116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:57,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702409322] [2024-11-19 01:52:57,253 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:52:57,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:57,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:57,254 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:57,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 01:52:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:57,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:52:57,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:57,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:57,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702409322] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:57,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:57,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-19 01:52:57,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240697582] [2024-11-19 01:52:57,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:57,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:52:57,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:57,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:52:57,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:52:57,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:52:57,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 445 transitions, 4693 flow. Second operand has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:57,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:57,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:52:57,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:58,255 INFO L124 PetriNetUnfolderBase]: 5544/8602 cut-off events. [2024-11-19 01:52:58,255 INFO L125 PetriNetUnfolderBase]: For 57313/57358 co-relation queries the response was YES. [2024-11-19 01:52:58,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43974 conditions, 8602 events. 5544/8602 cut-off events. For 57313/57358 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 52157 event pairs, 1863 based on Foata normal form. 240/8825 useless extension candidates. Maximal degree in co-relation 43029. Up to 3833 conditions per place. [2024-11-19 01:52:58,313 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 457 selfloop transitions, 33 changer transitions 0/495 dead transitions. [2024-11-19 01:52:58,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 495 transitions, 5958 flow [2024-11-19 01:52:58,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:52:58,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:52:58,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-11-19 01:52:58,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-11-19 01:52:58,314 INFO L175 Difference]: Start difference. First operand has 189 places, 445 transitions, 4693 flow. Second operand 7 states and 121 transitions. [2024-11-19 01:52:58,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 495 transitions, 5958 flow [2024-11-19 01:52:58,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 495 transitions, 5939 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-19 01:52:58,503 INFO L231 Difference]: Finished difference. Result has 193 places, 396 transitions, 4214 flow [2024-11-19 01:52:58,503 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4116, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4214, PETRI_PLACES=193, PETRI_TRANSITIONS=396} [2024-11-19 01:52:58,503 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 158 predicate places. [2024-11-19 01:52:58,503 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 396 transitions, 4214 flow [2024-11-19 01:52:58,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:58,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:58,504 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] [2024-11-19 01:52:58,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 01:52:58,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 01:52:58,704 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:52:58,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:58,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1952484937, now seen corresponding path program 8 times [2024-11-19 01:52:58,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:58,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636946580] [2024-11-19 01:52:58,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:52:58,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:58,716 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:58,716 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:58,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:58,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636946580] [2024-11-19 01:52:58,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636946580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:58,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185520380] [2024-11-19 01:52:58,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:52:58,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:58,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:58,779 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:58,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 01:52:58,835 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:58,835 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:58,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 01:52:58,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:58,927 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:58,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:58,963 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:58,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185520380] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:58,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:58,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-19 01:52:58,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915450775] [2024-11-19 01:52:58,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:58,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:52:58,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:58,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:52:58,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:52:58,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:52:58,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 396 transitions, 4214 flow. Second operand has 14 states, 14 states have (on average 9.642857142857142) internal successors, (135), 14 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:58,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:58,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:52:58,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:59,739 INFO L124 PetriNetUnfolderBase]: 5356/8189 cut-off events. [2024-11-19 01:52:59,740 INFO L125 PetriNetUnfolderBase]: For 59107/59313 co-relation queries the response was YES. [2024-11-19 01:52:59,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42797 conditions, 8189 events. 5356/8189 cut-off events. For 59107/59313 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 48932 event pairs, 1795 based on Foata normal form. 433/8530 useless extension candidates. Maximal degree in co-relation 42304. Up to 3858 conditions per place. [2024-11-19 01:52:59,790 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 423 selfloop transitions, 32 changer transitions 4/479 dead transitions. [2024-11-19 01:52:59,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 479 transitions, 5895 flow [2024-11-19 01:52:59,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:52:59,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:52:59,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-11-19 01:52:59,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5064935064935064 [2024-11-19 01:52:59,791 INFO L175 Difference]: Start difference. First operand has 193 places, 396 transitions, 4214 flow. Second operand 7 states and 117 transitions. [2024-11-19 01:52:59,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 479 transitions, 5895 flow [2024-11-19 01:52:59,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 479 transitions, 5815 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-19 01:52:59,982 INFO L231 Difference]: Finished difference. Result has 197 places, 372 transitions, 4081 flow [2024-11-19 01:52:59,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3938, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4081, PETRI_PLACES=197, PETRI_TRANSITIONS=372} [2024-11-19 01:52:59,983 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 162 predicate places. [2024-11-19 01:52:59,983 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 372 transitions, 4081 flow [2024-11-19 01:52:59,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.642857142857142) internal successors, (135), 14 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:59,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:59,983 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:59,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 01:53:00,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:00,184 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:53:00,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:00,184 INFO L85 PathProgramCache]: Analyzing trace with hash 776475648, now seen corresponding path program 1 times [2024-11-19 01:53:00,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:00,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297888076] [2024-11-19 01:53:00,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:53:00,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:53:00,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:53:00,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:00,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297888076] [2024-11-19 01:53:00,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297888076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:00,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942357417] [2024-11-19 01:53:00,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:53:00,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:00,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:00,250 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:53:00,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 01:53:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:53:00,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:53:00,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:53:00,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:53:00,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942357417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:00,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:00,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-19 01:53:00,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935338254] [2024-11-19 01:53:00,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:00,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:53:00,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:00,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:53:00,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:53:00,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-19 01:53:00,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 372 transitions, 4081 flow. Second operand has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:00,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:00,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-19 01:53:00,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:01,263 INFO L124 PetriNetUnfolderBase]: 4010/6408 cut-off events. [2024-11-19 01:53:01,263 INFO L125 PetriNetUnfolderBase]: For 49270/49470 co-relation queries the response was YES. [2024-11-19 01:53:01,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34376 conditions, 6408 events. 4010/6408 cut-off events. For 49270/49470 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 39227 event pairs, 1897 based on Foata normal form. 381/6703 useless extension candidates. Maximal degree in co-relation 33909. Up to 3793 conditions per place. [2024-11-19 01:53:01,310 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 199 selfloop transitions, 3 changer transitions 166/383 dead transitions. [2024-11-19 01:53:01,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 383 transitions, 5032 flow [2024-11-19 01:53:01,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:53:01,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:53:01,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-11-19 01:53:01,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4898989898989899 [2024-11-19 01:53:01,311 INFO L175 Difference]: Start difference. First operand has 197 places, 372 transitions, 4081 flow. Second operand 6 states and 97 transitions. [2024-11-19 01:53:01,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 383 transitions, 5032 flow [2024-11-19 01:53:01,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 383 transitions, 4867 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-11-19 01:53:01,500 INFO L231 Difference]: Finished difference. Result has 196 places, 217 transitions, 2187 flow [2024-11-19 01:53:01,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3322, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2187, PETRI_PLACES=196, PETRI_TRANSITIONS=217} [2024-11-19 01:53:01,501 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 161 predicate places. [2024-11-19 01:53:01,501 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 217 transitions, 2187 flow [2024-11-19 01:53:01,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:01,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:01,501 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] [2024-11-19 01:53:01,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 01:53:01,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 01:53:01,702 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:53:01,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:01,702 INFO L85 PathProgramCache]: Analyzing trace with hash -821033747, now seen corresponding path program 9 times [2024-11-19 01:53:01,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:01,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449865700] [2024-11-19 01:53:01,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:53:01,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:01,722 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:53:01,726 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:53:01,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:01,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449865700] [2024-11-19 01:53:01,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449865700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:01,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611747326] [2024-11-19 01:53:01,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:53:01,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:01,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:01,822 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:53:01,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 01:53:01,887 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:53:01,887 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:01,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:53:01,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:01,973 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:53:01,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:02,043 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:53:02,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611747326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:02,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:02,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-19 01:53:02,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924711483] [2024-11-19 01:53:02,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:02,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 01:53:02,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:02,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 01:53:02,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:53:02,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-19 01:53:02,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 217 transitions, 2187 flow. Second operand has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:02,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:02,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-19 01:53:02,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:02,930 INFO L124 PetriNetUnfolderBase]: 4923/7258 cut-off events. [2024-11-19 01:53:02,930 INFO L125 PetriNetUnfolderBase]: For 58633/58927 co-relation queries the response was YES. [2024-11-19 01:53:03,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40179 conditions, 7258 events. 4923/7258 cut-off events. For 58633/58927 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 39019 event pairs, 964 based on Foata normal form. 330/7560 useless extension candidates. Maximal degree in co-relation 40113. Up to 2591 conditions per place. [2024-11-19 01:53:03,043 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 352 selfloop transitions, 64 changer transitions 0/428 dead transitions. [2024-11-19 01:53:03,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 428 transitions, 5119 flow [2024-11-19 01:53:03,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:53:03,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 01:53:03,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 177 transitions. [2024-11-19 01:53:03,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4125874125874126 [2024-11-19 01:53:03,045 INFO L175 Difference]: Start difference. First operand has 196 places, 217 transitions, 2187 flow. Second operand 13 states and 177 transitions. [2024-11-19 01:53:03,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 428 transitions, 5119 flow [2024-11-19 01:53:03,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 428 transitions, 4885 flow, removed 104 selfloop flow, removed 22 redundant places. [2024-11-19 01:53:03,197 INFO L231 Difference]: Finished difference. Result has 137 places, 248 transitions, 2522 flow [2024-11-19 01:53:03,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2040, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2522, PETRI_PLACES=137, PETRI_TRANSITIONS=248} [2024-11-19 01:53:03,197 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 102 predicate places. [2024-11-19 01:53:03,197 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 248 transitions, 2522 flow [2024-11-19 01:53:03,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:03,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:03,198 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] [2024-11-19 01:53:03,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 01:53:03,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 01:53:03,398 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:53:03,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:03,399 INFO L85 PathProgramCache]: Analyzing trace with hash 487577069, now seen corresponding path program 10 times [2024-11-19 01:53:03,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:03,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827195866] [2024-11-19 01:53:03,399 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:53:03,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:03,404 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:53:03,405 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:53:03,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:03,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827195866] [2024-11-19 01:53:03,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827195866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:03,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458195123] [2024-11-19 01:53:03,450 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:53:03,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:03,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:03,452 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:53:03,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 01:53:03,504 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:53:03,504 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:03,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:53:03,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:03,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:53:03,565 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:03,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:53:03,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458195123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:03,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:03,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-19 01:53:03,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417293741] [2024-11-19 01:53:03,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:03,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:53:03,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:03,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:53:03,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:53:03,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-19 01:53:03,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 248 transitions, 2522 flow. Second operand has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:03,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:03,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-19 01:53:03,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:06,406 INFO L124 PetriNetUnfolderBase]: 17164/24146 cut-off events. [2024-11-19 01:53:06,406 INFO L125 PetriNetUnfolderBase]: For 170861/170861 co-relation queries the response was YES. [2024-11-19 01:53:06,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137941 conditions, 24146 events. 17164/24146 cut-off events. For 170861/170861 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 134778 event pairs, 324 based on Foata normal form. 17/24163 useless extension candidates. Maximal degree in co-relation 137877. Up to 8706 conditions per place. [2024-11-19 01:53:06,577 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 882 selfloop transitions, 555 changer transitions 0/1438 dead transitions. [2024-11-19 01:53:06,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 1438 transitions, 17636 flow [2024-11-19 01:53:06,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-19 01:53:06,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-11-19 01:53:06,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 778 transitions. [2024-11-19 01:53:06,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3995891114535182 [2024-11-19 01:53:06,579 INFO L175 Difference]: Start difference. First operand has 137 places, 248 transitions, 2522 flow. Second operand 59 states and 778 transitions. [2024-11-19 01:53:06,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 1438 transitions, 17636 flow [2024-11-19 01:53:07,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 1438 transitions, 17301 flow, removed 164 selfloop flow, removed 4 redundant places. [2024-11-19 01:53:07,684 INFO L231 Difference]: Finished difference. Result has 213 places, 825 transitions, 10740 flow [2024-11-19 01:53:07,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=10740, PETRI_PLACES=213, PETRI_TRANSITIONS=825} [2024-11-19 01:53:07,684 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 178 predicate places. [2024-11-19 01:53:07,684 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 825 transitions, 10740 flow [2024-11-19 01:53:07,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:07,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:07,685 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] [2024-11-19 01:53:07,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 01:53:07,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 01:53:07,889 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:53:07,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:07,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1375897573, now seen corresponding path program 11 times [2024-11-19 01:53:07,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:07,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099707903] [2024-11-19 01:53:07,890 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:53:07,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:07,898 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:53:07,898 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:53:07,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:07,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099707903] [2024-11-19 01:53:07,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099707903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:07,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092130947] [2024-11-19 01:53:07,957 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:53:07,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:07,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:07,958 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:53:07,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 01:53:08,018 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:53:08,018 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:08,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:53:08,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:08,094 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:53:08,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:53:08,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092130947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:08,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:08,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-19 01:53:08,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416628145] [2024-11-19 01:53:08,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:08,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 01:53:08,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:08,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 01:53:08,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:53:08,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-19 01:53:08,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 825 transitions, 10740 flow. Second operand has 18 states, 18 states have (on average 6.611111111111111) internal successors, (119), 18 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:08,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:08,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-19 01:53:08,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:18,572 INFO L124 PetriNetUnfolderBase]: 44244/61180 cut-off events. [2024-11-19 01:53:18,572 INFO L125 PetriNetUnfolderBase]: For 803302/803302 co-relation queries the response was YES. [2024-11-19 01:53:18,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425744 conditions, 61180 events. 44244/61180 cut-off events. For 803302/803302 co-relation queries the response was YES. Maximal size of possible extension queue 1554. Compared 366301 event pairs, 741 based on Foata normal form. 144/61324 useless extension candidates. Maximal degree in co-relation 425661. Up to 24453 conditions per place. [2024-11-19 01:53:19,319 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 1653 selfloop transitions, 1877 changer transitions 0/3531 dead transitions. [2024-11-19 01:53:19,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 3531 transitions, 53210 flow [2024-11-19 01:53:19,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-19 01:53:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-11-19 01:53:19,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 949 transitions. [2024-11-19 01:53:19,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39941077441077444 [2024-11-19 01:53:19,322 INFO L175 Difference]: Start difference. First operand has 213 places, 825 transitions, 10740 flow. Second operand 72 states and 949 transitions. [2024-11-19 01:53:19,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 3531 transitions, 53210 flow [2024-11-19 01:53:30,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 3531 transitions, 49339 flow, removed 1857 selfloop flow, removed 2 redundant places. [2024-11-19 01:53:30,903 INFO L231 Difference]: Finished difference. Result has 338 places, 2332 transitions, 35767 flow [2024-11-19 01:53:30,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=9631, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=825, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=485, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=35767, PETRI_PLACES=338, PETRI_TRANSITIONS=2332} [2024-11-19 01:53:30,904 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 303 predicate places. [2024-11-19 01:53:30,904 INFO L471 AbstractCegarLoop]: Abstraction has has 338 places, 2332 transitions, 35767 flow [2024-11-19 01:53:30,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.611111111111111) internal successors, (119), 18 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:30,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:30,905 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] [2024-11-19 01:53:30,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-19 01:53:31,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 01:53:31,105 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:53:31,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:31,105 INFO L85 PathProgramCache]: Analyzing trace with hash -951352737, now seen corresponding path program 12 times [2024-11-19 01:53:31,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:31,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062743171] [2024-11-19 01:53:31,106 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:53:31,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:31,114 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 01:53:31,114 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:31,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:31,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:31,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062743171] [2024-11-19 01:53:31,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062743171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:31,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780035759] [2024-11-19 01:53:31,179 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:53:31,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:31,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:31,180 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:53:31,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 01:53:31,238 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 01:53:31,238 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:31,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:53:31,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:31,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:31,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780035759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:31,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:31,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-19 01:53:31,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845408552] [2024-11-19 01:53:31,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:31,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 01:53:31,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:31,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 01:53:31,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:53:31,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-19 01:53:31,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 2332 transitions, 35767 flow. Second operand has 18 states, 18 states have (on average 7.555555555555555) internal successors, (136), 18 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:31,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:31,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-19 01:53:31,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand