./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:33:21,580 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:33:21,642 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:33:21,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:33:21,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:33:21,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:33:21,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:33:21,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:33:21,682 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:33:21,683 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:33:21,684 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:33:21,684 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:33:21,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:33:21,685 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:33:21,685 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:33:21,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:33:21,687 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:33:21,688 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:33:21,688 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:33:21,688 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:33:21,688 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:33:21,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:33:21,692 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:33:21,692 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:33:21,692 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:33:21,692 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:33:21,692 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:33:21,693 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:33:21,693 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:33:21,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:33:21,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:33:21,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:33:21,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:33:21,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:33:21,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:33:21,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:33:21,696 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:33:21,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:33:21,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:33:21,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:33:21,696 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:33:21,697 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:33:21,697 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 [2024-10-11 14:33:21,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:33:22,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:33:22,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:33:22,004 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:33:22,005 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:33:22,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2024-10-11 14:33:23,397 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:33:23,600 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:33:23,600 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2024-10-11 14:33:23,616 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a9f5dbff1/9cb10ab086ff43cb8ef7c9e9d9b26647/FLAGf2a5e2002 [2024-10-11 14:33:23,634 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a9f5dbff1/9cb10ab086ff43cb8ef7c9e9d9b26647 [2024-10-11 14:33:23,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:33:23,638 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:33:23,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:33:23,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:33:23,648 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:33:23,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:23" (1/1) ... [2024-10-11 14:33:23,650 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1768b309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:23, skipping insertion in model container [2024-10-11 14:33:23,650 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:23" (1/1) ... [2024-10-11 14:33:23,678 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:33:23,906 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c[2592,2605] [2024-10-11 14:33:23,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:33:23,933 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:33:23,960 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c[2592,2605] [2024-10-11 14:33:23,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:33:23,989 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:33:23,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:23 WrapperNode [2024-10-11 14:33:23,990 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:33:23,992 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:33:23,992 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:33:23,992 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:33:23,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:23" (1/1) ... [2024-10-11 14:33:24,009 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:23" (1/1) ... [2024-10-11 14:33:24,036 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 86 [2024-10-11 14:33:24,037 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:33:24,038 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:33:24,038 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:33:24,038 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:33:24,049 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:23" (1/1) ... [2024-10-11 14:33:24,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:23" (1/1) ... [2024-10-11 14:33:24,054 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:23" (1/1) ... [2024-10-11 14:33:24,070 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]. [2024-10-11 14:33:24,070 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:23" (1/1) ... [2024-10-11 14:33:24,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:23" (1/1) ... [2024-10-11 14:33:24,076 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:23" (1/1) ... [2024-10-11 14:33:24,084 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:23" (1/1) ... [2024-10-11 14:33:24,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:23" (1/1) ... [2024-10-11 14:33:24,088 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:23" (1/1) ... [2024-10-11 14:33:24,091 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:33:24,092 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:33:24,092 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:33:24,092 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:33:24,093 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:23" (1/1) ... [2024-10-11 14:33:24,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:33:24,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:24,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:33:24,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:33:24,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:33:24,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:33:24,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:33:24,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:33:24,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:33:24,165 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:33:24,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:33:24,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:33:24,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:33:24,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:33:24,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:33:24,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:33:24,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:33:24,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 14:33:24,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:33:24,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:33:24,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:33:24,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:33:24,168 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:33:24,263 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:33:24,265 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:33:24,517 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:33:24,517 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:33:24,705 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:33:24,705 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 14:33:24,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:24 BoogieIcfgContainer [2024-10-11 14:33:24,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:33:24,708 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:33:24,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:33:24,711 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:33:24,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:33:23" (1/3) ... [2024-10-11 14:33:24,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220c146e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:24, skipping insertion in model container [2024-10-11 14:33:24,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:23" (2/3) ... [2024-10-11 14:33:24,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220c146e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:24, skipping insertion in model container [2024-10-11 14:33:24,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:24" (3/3) ... [2024-10-11 14:33:24,719 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2024-10-11 14:33:24,735 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:33:24,736 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:33:24,736 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:33:24,794 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 14:33:24,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 87 flow [2024-10-11 14:33:24,869 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-10-11 14:33:24,871 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:33:24,876 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 37 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. [2024-10-11 14:33:24,876 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 87 flow [2024-10-11 14:33:24,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 29 transitions, 76 flow [2024-10-11 14:33:24,924 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:33:24,935 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;@af7053a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:33:24,936 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 14:33:24,971 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:33:24,971 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-10-11 14:33:24,971 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:33:24,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:24,976 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:33:24,976 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:24,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:24,983 INFO L85 PathProgramCache]: Analyzing trace with hash 261283878, now seen corresponding path program 1 times [2024-10-11 14:33:24,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:24,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159117201] [2024-10-11 14:33:24,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:24,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:25,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:25,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159117201] [2024-10-11 14:33:25,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159117201] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:25,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:33:25,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:33:25,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467271616] [2024-10-11 14:33:25,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:25,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:33:25,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:25,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:33:25,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:33:25,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-10-11 14:33:25,403 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) [2024-10-11 14:33:25,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:25,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-10-11 14:33:25,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:25,610 INFO L124 PetriNetUnfolderBase]: 617/945 cut-off events. [2024-10-11 14:33:25,610 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-10-11 14:33:25,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1940 conditions, 945 events. 617/945 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3706 event pairs, 126 based on Foata normal form. 1/932 useless extension candidates. Maximal degree in co-relation 1706. Up to 677 conditions per place. [2024-10-11 14:33:25,622 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 37 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2024-10-11 14:33:25,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 209 flow [2024-10-11 14:33:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:33:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:33:25,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-10-11 14:33:25,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-10-11 14:33:25,636 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 76 flow. Second operand 3 states and 64 transitions. [2024-10-11 14:33:25,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 209 flow [2024-10-11 14:33:25,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 14:33:25,646 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 90 flow [2024-10-11 14:33:25,648 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} [2024-10-11 14:33:25,653 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2024-10-11 14:33:25,654 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 90 flow [2024-10-11 14:33:25,654 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) [2024-10-11 14:33:25,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:25,655 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] [2024-10-11 14:33:25,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:33:25,655 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:25,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:25,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1254734667, now seen corresponding path program 1 times [2024-10-11 14:33:25,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:25,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432587437] [2024-10-11 14:33:25,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:25,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:25,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:33:25,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:25,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432587437] [2024-10-11 14:33:25,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432587437] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:25,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:33:25,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:33:25,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551976035] [2024-10-11 14:33:25,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:25,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:33:25,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:25,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:33:25,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:33:25,940 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-10-11 14:33:25,941 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) [2024-10-11 14:33:25,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:25,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-10-11 14:33:25,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:26,085 INFO L124 PetriNetUnfolderBase]: 617/943 cut-off events. [2024-10-11 14:33:26,086 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2024-10-11 14:33:26,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 943 events. 617/943 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3839 event pairs, 407 based on Foata normal form. 0/914 useless extension candidates. Maximal degree in co-relation 792. Up to 895 conditions per place. [2024-10-11 14:33:26,093 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 27 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-10-11 14:33:26,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 150 flow [2024-10-11 14:33:26,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:33:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:33:26,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-10-11 14:33:26,096 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-10-11 14:33:26,096 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 90 flow. Second operand 3 states and 48 transitions. [2024-10-11 14:33:26,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 150 flow [2024-10-11 14:33:26,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:33:26,099 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 98 flow [2024-10-11 14:33:26,101 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} [2024-10-11 14:33:26,101 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-10-11 14:33:26,102 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 98 flow [2024-10-11 14:33:26,102 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) [2024-10-11 14:33:26,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:26,102 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] [2024-10-11 14:33:26,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:33:26,102 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:26,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:26,103 INFO L85 PathProgramCache]: Analyzing trace with hash -788942457, now seen corresponding path program 1 times [2024-10-11 14:33:26,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:26,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476383053] [2024-10-11 14:33:26,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:26,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:26,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:33:26,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:26,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476383053] [2024-10-11 14:33:26,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476383053] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:33:26,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:33:26,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:33:26,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697460807] [2024-10-11 14:33:26,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:26,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:33:26,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:26,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:33:26,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:33:26,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-10-11 14:33:26,231 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) [2024-10-11 14:33:26,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:26,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-10-11 14:33:26,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:26,447 INFO L124 PetriNetUnfolderBase]: 790/1161 cut-off events. [2024-10-11 14:33:26,448 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2024-10-11 14:33:26,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2575 conditions, 1161 events. 790/1161 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4676 event pairs, 246 based on Foata normal form. 0/1118 useless extension candidates. Maximal degree in co-relation 2562. Up to 576 conditions per place. [2024-10-11 14:33:26,457 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 40 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-10-11 14:33:26,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 47 transitions, 224 flow [2024-10-11 14:33:26,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:33:26,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:33:26,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-10-11 14:33:26,459 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-10-11 14:33:26,461 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 98 flow. Second operand 4 states and 63 transitions. [2024-10-11 14:33:26,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 47 transitions, 224 flow [2024-10-11 14:33:26,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 218 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 14:33:26,465 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 113 flow [2024-10-11 14:33:26,466 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} [2024-10-11 14:33:26,467 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-10-11 14:33:26,467 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 113 flow [2024-10-11 14:33:26,467 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) [2024-10-11 14:33:26,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:26,468 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] [2024-10-11 14:33:26,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:33:26,469 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:26,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:26,470 INFO L85 PathProgramCache]: Analyzing trace with hash 513300121, now seen corresponding path program 1 times [2024-10-11 14:33:26,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:26,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071976703] [2024-10-11 14:33:26,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:26,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:33:26,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:26,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071976703] [2024-10-11 14:33:26,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071976703] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:26,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41069228] [2024-10-11 14:33:26,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:26,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:26,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:26,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:26,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:33:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:26,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:33:26,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:26,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:33:26,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:33:26,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:33:26,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41069228] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:26,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:33:26,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-10-11 14:33:26,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414869705] [2024-10-11 14:33:26,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:33:26,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:33:26,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:26,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:33:26,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:33:26,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-10-11 14:33:26,837 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) [2024-10-11 14:33:26,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:26,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-10-11 14:33:26,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:27,045 INFO L124 PetriNetUnfolderBase]: 855/1295 cut-off events. [2024-10-11 14:33:27,046 INFO L125 PetriNetUnfolderBase]: For 505/505 co-relation queries the response was YES. [2024-10-11 14:33:27,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3247 conditions, 1295 events. 855/1295 cut-off events. For 505/505 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5390 event pairs, 256 based on Foata normal form. 0/1230 useless extension candidates. Maximal degree in co-relation 3227. Up to 670 conditions per place. [2024-10-11 14:33:27,055 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 41 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2024-10-11 14:33:27,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 257 flow [2024-10-11 14:33:27,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:33:27,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:33:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-10-11 14:33:27,057 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-10-11 14:33:27,057 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 113 flow. Second operand 5 states and 72 transitions. [2024-10-11 14:33:27,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 257 flow [2024-10-11 14:33:27,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:33:27,062 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 132 flow [2024-10-11 14:33:27,062 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} [2024-10-11 14:33:27,064 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2024-10-11 14:33:27,064 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 132 flow [2024-10-11 14:33:27,064 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) [2024-10-11 14:33:27,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:27,065 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] [2024-10-11 14:33:27,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 14:33:27,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:27,266 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:27,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:27,266 INFO L85 PathProgramCache]: Analyzing trace with hash -694361008, now seen corresponding path program 1 times [2024-10-11 14:33:27,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:27,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384817948] [2024-10-11 14:33:27,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:27,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:28,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:28,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384817948] [2024-10-11 14:33:28,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384817948] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:28,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526449637] [2024-10-11 14:33:28,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:28,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:28,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:28,078 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:28,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:33:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:28,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-11 14:33:28,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:28,234 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 [2024-10-11 14:33:28,497 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 [2024-10-11 14:33:28,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:28,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:33:29,611 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 117 treesize of output 105 [2024-10-11 14:33:29,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:33:29,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 157 treesize of output 149 [2024-10-11 14:33:30,561 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 93 treesize of output 85 [2024-10-11 14:33:30,596 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-10-11 14:33:30,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 103 [2024-10-11 14:33:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:31,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526449637] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:33:31,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:33:31,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2024-10-11 14:33:31,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670184403] [2024-10-11 14:33:31,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:33:31,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 14:33:31,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:31,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 14:33:31,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2024-10-11 14:33:31,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-10-11 14:33:31,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 132 flow. Second operand has 24 states, 24 states have (on average 8.666666666666666) internal successors, (208), 24 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:31,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:31,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-10-11 14:33:31,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:33,076 INFO L124 PetriNetUnfolderBase]: 1841/2761 cut-off events. [2024-10-11 14:33:33,076 INFO L125 PetriNetUnfolderBase]: For 1721/1721 co-relation queries the response was YES. [2024-10-11 14:33:33,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7669 conditions, 2761 events. 1841/2761 cut-off events. For 1721/1721 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12609 event pairs, 106 based on Foata normal form. 1/2760 useless extension candidates. Maximal degree in co-relation 5614. Up to 1375 conditions per place. [2024-10-11 14:33:33,098 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 137 selfloop transitions, 57 changer transitions 1/199 dead transitions. [2024-10-11 14:33:33,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 199 transitions, 1067 flow [2024-10-11 14:33:33,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 14:33:33,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 14:33:33,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 321 transitions. [2024-10-11 14:33:33,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2024-10-11 14:33:33,104 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 132 flow. Second operand 21 states and 321 transitions. [2024-10-11 14:33:33,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 199 transitions, 1067 flow [2024-10-11 14:33:33,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 199 transitions, 1050 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 14:33:33,114 INFO L231 Difference]: Finished difference. Result has 64 places, 91 transitions, 543 flow [2024-10-11 14:33:33,115 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} [2024-10-11 14:33:33,117 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2024-10-11 14:33:33,117 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 91 transitions, 543 flow [2024-10-11 14:33:33,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.666666666666666) internal successors, (208), 24 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:33,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:33,118 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] [2024-10-11 14:33:33,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 14:33:33,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:33,319 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:33,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:33,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2045165880, now seen corresponding path program 2 times [2024-10-11 14:33:33,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:33,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333415439] [2024-10-11 14:33:33,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:33,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:33,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:33,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:33,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333415439] [2024-10-11 14:33:33,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333415439] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:33,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702869468] [2024-10-11 14:33:33,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:33:33,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:33,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:33,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:33,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:33:33,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:33:33,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:33:33,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:33:33,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:34,009 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 [2024-10-11 14:33:34,255 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 [2024-10-11 14:33:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:34,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:33:35,126 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 117 treesize of output 105 [2024-10-11 14:33:35,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:33:35,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 157 treesize of output 149 [2024-10-11 14:33:35,849 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 93 treesize of output 85 [2024-10-11 14:33:35,875 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-10-11 14:33:35,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 103 [2024-10-11 14:33:36,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:36,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702869468] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:33:36,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:33:36,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2024-10-11 14:33:36,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218831705] [2024-10-11 14:33:36,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:33:36,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 14:33:36,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:36,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 14:33:36,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-10-11 14:33:36,368 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-10-11 14:33:36,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 91 transitions, 543 flow. Second operand has 18 states, 18 states have (on average 9.833333333333334) internal successors, (177), 18 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:36,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:36,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-10-11 14:33:36,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:37,399 INFO L124 PetriNetUnfolderBase]: 1538/2445 cut-off events. [2024-10-11 14:33:37,399 INFO L125 PetriNetUnfolderBase]: For 3235/3238 co-relation queries the response was YES. [2024-10-11 14:33:37,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7984 conditions, 2445 events. 1538/2445 cut-off events. For 3235/3238 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12186 event pairs, 126 based on Foata normal form. 3/2444 useless extension candidates. Maximal degree in co-relation 7422. Up to 1623 conditions per place. [2024-10-11 14:33:37,422 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 125 selfloop transitions, 49 changer transitions 1/181 dead transitions. [2024-10-11 14:33:37,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 181 transitions, 1211 flow [2024-10-11 14:33:37,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 14:33:37,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 14:33:37,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 242 transitions. [2024-10-11 14:33:37,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-10-11 14:33:37,425 INFO L175 Difference]: Start difference. First operand has 64 places, 91 transitions, 543 flow. Second operand 15 states and 242 transitions. [2024-10-11 14:33:37,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 181 transitions, 1211 flow [2024-10-11 14:33:37,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 181 transitions, 1093 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-10-11 14:33:37,442 INFO L231 Difference]: Finished difference. Result has 76 places, 111 transitions, 679 flow [2024-10-11 14:33:37,443 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=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=679, PETRI_PLACES=76, PETRI_TRANSITIONS=111} [2024-10-11 14:33:37,444 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 41 predicate places. [2024-10-11 14:33:37,444 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 111 transitions, 679 flow [2024-10-11 14:33:37,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.833333333333334) internal successors, (177), 18 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:37,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:37,445 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] [2024-10-11 14:33:37,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 14:33:37,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:37,650 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:37,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:37,651 INFO L85 PathProgramCache]: Analyzing trace with hash -605205446, now seen corresponding path program 3 times [2024-10-11 14:33:37,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:37,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288136250] [2024-10-11 14:33:37,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:37,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:38,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:38,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:38,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288136250] [2024-10-11 14:33:38,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288136250] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:38,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210390106] [2024-10-11 14:33:38,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:33:38,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:38,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:38,205 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:38,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:33:38,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 14:33:38,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:33:38,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:33:38,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:38,292 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 [2024-10-11 14:33:38,524 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 [2024-10-11 14:33:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:38,572 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:33:39,382 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 53 treesize of output 47 [2024-10-11 14:33:39,392 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:33:39,393 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 64 treesize of output 58 [2024-10-11 14:33:39,444 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 66 treesize of output 58 [2024-10-11 14:33:39,452 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-11 14:33:39,453 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 100 treesize of output 1 [2024-10-11 14:33:39,458 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 69 treesize of output 61 [2024-10-11 14:33:39,469 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-11 14:33:39,469 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 83 treesize of output 75 [2024-10-11 14:33:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:39,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210390106] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:33:39,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:33:39,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 22 [2024-10-11 14:33:39,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870773981] [2024-10-11 14:33:39,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:33:39,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 14:33:39,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:39,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 14:33:39,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-10-11 14:33:39,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-10-11 14:33:39,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 111 transitions, 679 flow. Second operand has 23 states, 23 states have (on average 8.826086956521738) internal successors, (203), 23 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:39,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:39,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-10-11 14:33:39,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:41,205 INFO L124 PetriNetUnfolderBase]: 2837/4284 cut-off events. [2024-10-11 14:33:41,206 INFO L125 PetriNetUnfolderBase]: For 4874/4879 co-relation queries the response was YES. [2024-10-11 14:33:41,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13745 conditions, 4284 events. 2837/4284 cut-off events. For 4874/4879 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 21824 event pairs, 176 based on Foata normal form. 6/4289 useless extension candidates. Maximal degree in co-relation 12408. Up to 2499 conditions per place. [2024-10-11 14:33:41,244 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 162 selfloop transitions, 89 changer transitions 2/257 dead transitions. [2024-10-11 14:33:41,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 257 transitions, 1757 flow [2024-10-11 14:33:41,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 14:33:41,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-11 14:33:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 292 transitions. [2024-10-11 14:33:41,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46570972886762363 [2024-10-11 14:33:41,246 INFO L175 Difference]: Start difference. First operand has 76 places, 111 transitions, 679 flow. Second operand 19 states and 292 transitions. [2024-10-11 14:33:41,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 257 transitions, 1757 flow [2024-10-11 14:33:41,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 257 transitions, 1720 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-10-11 14:33:41,322 INFO L231 Difference]: Finished difference. Result has 96 places, 156 transitions, 1222 flow [2024-10-11 14:33:41,323 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1222, PETRI_PLACES=96, PETRI_TRANSITIONS=156} [2024-10-11 14:33:41,323 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 61 predicate places. [2024-10-11 14:33:41,324 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 156 transitions, 1222 flow [2024-10-11 14:33:41,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.826086956521738) internal successors, (203), 23 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:41,324 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:41,324 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] [2024-10-11 14:33:41,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 14:33:41,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-11 14:33:41,525 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:41,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:41,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1642369434, now seen corresponding path program 4 times [2024-10-11 14:33:41,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:41,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909429961] [2024-10-11 14:33:41,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:41,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:41,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:41,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:41,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909429961] [2024-10-11 14:33:41,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909429961] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:41,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823503326] [2024-10-11 14:33:41,995 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:33:41,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:41,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:41,997 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:41,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 14:33:42,078 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:33:42,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:33:42,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:33:42,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:42,099 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 [2024-10-11 14:33:42,276 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 [2024-10-11 14:33:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:42,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:33:42,993 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 53 treesize of output 47 [2024-10-11 14:33:43,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:33:43,002 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 64 treesize of output 58 [2024-10-11 14:33:43,044 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 69 treesize of output 61 [2024-10-11 14:33:43,053 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-11 14:33:43,053 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 83 treesize of output 75 [2024-10-11 14:33:43,158 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 66 treesize of output 58 [2024-10-11 14:33:43,170 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-11 14:33:43,170 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 100 treesize of output 1 [2024-10-11 14:33:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:43,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823503326] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:33:43,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:33:43,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 20 [2024-10-11 14:33:43,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141254591] [2024-10-11 14:33:43,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:33:43,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 14:33:43,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:43,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 14:33:43,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-10-11 14:33:43,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-10-11 14:33:43,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 156 transitions, 1222 flow. Second operand has 21 states, 21 states have (on average 9.047619047619047) internal successors, (190), 21 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:43,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:43,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-10-11 14:33:43,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:44,762 INFO L124 PetriNetUnfolderBase]: 3261/4924 cut-off events. [2024-10-11 14:33:44,763 INFO L125 PetriNetUnfolderBase]: For 8668/8674 co-relation queries the response was YES. [2024-10-11 14:33:44,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17830 conditions, 4924 events. 3261/4924 cut-off events. For 8668/8674 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 25608 event pairs, 202 based on Foata normal form. 6/4928 useless extension candidates. Maximal degree in co-relation 16306. Up to 1876 conditions per place. [2024-10-11 14:33:44,791 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 140 selfloop transitions, 140 changer transitions 1/285 dead transitions. [2024-10-11 14:33:44,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 285 transitions, 2273 flow [2024-10-11 14:33:44,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 14:33:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 14:33:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 320 transitions. [2024-10-11 14:33:44,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46176046176046176 [2024-10-11 14:33:44,794 INFO L175 Difference]: Start difference. First operand has 96 places, 156 transitions, 1222 flow. Second operand 21 states and 320 transitions. [2024-10-11 14:33:44,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 285 transitions, 2273 flow [2024-10-11 14:33:44,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 285 transitions, 2224 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-10-11 14:33:44,827 INFO L231 Difference]: Finished difference. Result has 113 places, 180 transitions, 1697 flow [2024-10-11 14:33:44,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1697, PETRI_PLACES=113, PETRI_TRANSITIONS=180} [2024-10-11 14:33:44,828 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 78 predicate places. [2024-10-11 14:33:44,828 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 180 transitions, 1697 flow [2024-10-11 14:33:44,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.047619047619047) internal successors, (190), 21 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:44,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:44,829 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] [2024-10-11 14:33:44,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 14:33:45,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:45,030 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:45,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:45,030 INFO L85 PathProgramCache]: Analyzing trace with hash -177121568, now seen corresponding path program 5 times [2024-10-11 14:33:45,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:45,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278539493] [2024-10-11 14:33:45,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:45,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:45,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:45,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:45,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278539493] [2024-10-11 14:33:45,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278539493] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:45,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838055738] [2024-10-11 14:33:45,533 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:33:45,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:45,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:45,535 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:45,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 14:33:45,630 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:33:45,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:33:45,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:33:45,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:45,657 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 [2024-10-11 14:33:45,899 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 [2024-10-11 14:33:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:45,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:33:46,763 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 69 treesize of output 61 [2024-10-11 14:33:46,773 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 14:33:46,773 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 83 treesize of output 79 [2024-10-11 14:33:46,891 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 66 treesize of output 58 [2024-10-11 14:33:46,898 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-11 14:33:46,898 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 100 treesize of output 1 [2024-10-11 14:33:46,908 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 53 treesize of output 47 [2024-10-11 14:33:46,916 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-11 14:33:46,916 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 64 treesize of output 1 [2024-10-11 14:33:46,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:46,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838055738] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:33:46,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:33:46,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2024-10-11 14:33:46,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364036426] [2024-10-11 14:33:46,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:33:46,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 14:33:46,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:46,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 14:33:46,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2024-10-11 14:33:47,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-10-11 14:33:47,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 180 transitions, 1697 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) [2024-10-11 14:33:47,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:47,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-10-11 14:33:47,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:48,908 INFO L124 PetriNetUnfolderBase]: 3417/5163 cut-off events. [2024-10-11 14:33:48,908 INFO L125 PetriNetUnfolderBase]: For 12837/12842 co-relation queries the response was YES. [2024-10-11 14:33:48,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20527 conditions, 5163 events. 3417/5163 cut-off events. For 12837/12842 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 27198 event pairs, 90 based on Foata normal form. 6/5168 useless extension candidates. Maximal degree in co-relation 19618. Up to 1919 conditions per place. [2024-10-11 14:33:48,950 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 153 selfloop transitions, 157 changer transitions 2/316 dead transitions. [2024-10-11 14:33:48,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 316 transitions, 2825 flow [2024-10-11 14:33:48,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 14:33:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 14:33:48,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 348 transitions. [2024-10-11 14:33:48,953 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45849802371541504 [2024-10-11 14:33:48,953 INFO L175 Difference]: Start difference. First operand has 113 places, 180 transitions, 1697 flow. Second operand 23 states and 348 transitions. [2024-10-11 14:33:48,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 316 transitions, 2825 flow [2024-10-11 14:33:49,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 316 transitions, 2730 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-10-11 14:33:49,017 INFO L231 Difference]: Finished difference. Result has 128 places, 197 transitions, 2148 flow [2024-10-11 14:33:49,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2148, PETRI_PLACES=128, PETRI_TRANSITIONS=197} [2024-10-11 14:33:49,018 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 93 predicate places. [2024-10-11 14:33:49,018 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 197 transitions, 2148 flow [2024-10-11 14:33:49,018 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) [2024-10-11 14:33:49,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:49,019 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] [2024-10-11 14:33:49,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 14:33:49,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 14:33:49,223 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:49,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:49,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1248932762, now seen corresponding path program 6 times [2024-10-11 14:33:49,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:49,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012404979] [2024-10-11 14:33:49,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:49,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:49,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:49,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012404979] [2024-10-11 14:33:49,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012404979] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:49,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451205357] [2024-10-11 14:33:49,393 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:33:49,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:49,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:49,395 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:49,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 14:33:49,477 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 14:33:49,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:33:49,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:33:49,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:49,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:33:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:49,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451205357] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:33:49,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:33:49,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-11 14:33:49,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058009105] [2024-10-11 14:33:49,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:33:49,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 14:33:49,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:49,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 14:33:49,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-10-11 14:33:49,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-10-11 14:33:49,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 197 transitions, 2148 flow. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 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) [2024-10-11 14:33:49,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:49,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-10-11 14:33:49,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:50,352 INFO L124 PetriNetUnfolderBase]: 4668/7001 cut-off events. [2024-10-11 14:33:50,352 INFO L125 PetriNetUnfolderBase]: For 23039/23069 co-relation queries the response was YES. [2024-10-11 14:33:50,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29038 conditions, 7001 events. 4668/7001 cut-off events. For 23039/23069 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 39272 event pairs, 1381 based on Foata normal form. 64/7062 useless extension candidates. Maximal degree in co-relation 27571. Up to 2591 conditions per place. [2024-10-11 14:33:50,416 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 296 selfloop transitions, 33 changer transitions 0/334 dead transitions. [2024-10-11 14:33:50,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 334 transitions, 3884 flow [2024-10-11 14:33:50,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:33:50,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:33:50,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-10-11 14:33:50,417 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2024-10-11 14:33:50,417 INFO L175 Difference]: Start difference. First operand has 128 places, 197 transitions, 2148 flow. Second operand 10 states and 171 transitions. [2024-10-11 14:33:50,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 334 transitions, 3884 flow [2024-10-11 14:33:50,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 334 transitions, 3564 flow, removed 43 selfloop flow, removed 15 redundant places. [2024-10-11 14:33:50,533 INFO L231 Difference]: Finished difference. Result has 125 places, 204 transitions, 2084 flow [2024-10-11 14:33:50,534 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1930, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2084, PETRI_PLACES=125, PETRI_TRANSITIONS=204} [2024-10-11 14:33:50,535 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 90 predicate places. [2024-10-11 14:33:50,535 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 204 transitions, 2084 flow [2024-10-11 14:33:50,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 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) [2024-10-11 14:33:50,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:50,537 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] [2024-10-11 14:33:50,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 14:33:50,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:50,741 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:50,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:50,741 INFO L85 PathProgramCache]: Analyzing trace with hash -826341570, now seen corresponding path program 1 times [2024-10-11 14:33:50,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:50,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40811020] [2024-10-11 14:33:50,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:50,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:50,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:33:50,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:50,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40811020] [2024-10-11 14:33:50,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40811020] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:50,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41373640] [2024-10-11 14:33:50,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:50,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:50,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:50,834 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:50,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 14:33:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:50,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:33:50,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:33:50,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:33:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:33:51,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41373640] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:33:51,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:33:51,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-10-11 14:33:51,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835578291] [2024-10-11 14:33:51,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:33:51,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:33:51,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:51,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:33:51,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:33:51,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-10-11 14:33:51,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 204 transitions, 2084 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:51,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:51,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-10-11 14:33:51,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:51,627 INFO L124 PetriNetUnfolderBase]: 3277/5179 cut-off events. [2024-10-11 14:33:51,628 INFO L125 PetriNetUnfolderBase]: For 19415/19468 co-relation queries the response was YES. [2024-10-11 14:33:51,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21228 conditions, 5179 events. 3277/5179 cut-off events. For 19415/19468 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 30463 event pairs, 1735 based on Foata normal form. 3/5008 useless extension candidates. Maximal degree in co-relation 20103. Up to 1879 conditions per place. [2024-10-11 14:33:51,673 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 267 selfloop transitions, 6 changer transitions 0/282 dead transitions. [2024-10-11 14:33:51,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 282 transitions, 3444 flow [2024-10-11 14:33:51,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:33:51,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:33:51,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-10-11 14:33:51,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2024-10-11 14:33:51,675 INFO L175 Difference]: Start difference. First operand has 125 places, 204 transitions, 2084 flow. Second operand 6 states and 98 transitions. [2024-10-11 14:33:51,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 282 transitions, 3444 flow [2024-10-11 14:33:51,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 282 transitions, 3433 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-11 14:33:51,743 INFO L231 Difference]: Finished difference. Result has 130 places, 152 transitions, 1543 flow [2024-10-11 14:33:51,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1543, PETRI_PLACES=130, PETRI_TRANSITIONS=152} [2024-10-11 14:33:51,744 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 95 predicate places. [2024-10-11 14:33:51,744 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 152 transitions, 1543 flow [2024-10-11 14:33:51,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:51,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:51,745 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] [2024-10-11 14:33:51,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 14:33:51,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 14:33:51,950 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:33:51,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:51,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1744124697, now seen corresponding path program 7 times [2024-10-11 14:33:51,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:51,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101424589] [2024-10-11 14:33:51,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:51,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:33:52,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:52,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101424589] [2024-10-11 14:33:52,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101424589] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:52,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396911707] [2024-10-11 14:33:52,079 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:33:52,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:52,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:52,081 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:52,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 14:33:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:52,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:33:52,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:52,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:33:52,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:33:52,295 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:33:52,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396911707] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:33:52,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:33:52,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-11 14:33:52,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844942593] [2024-10-11 14:33:52,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:33:52,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 14:33:52,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:52,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 14:33:52,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-10-11 14:33:52,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-10-11 14:33:52,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 152 transitions, 1543 flow. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 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) [2024-10-11 14:33:52,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:52,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-10-11 14:33:52,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:52,843 INFO L124 PetriNetUnfolderBase]: 3249/5139 cut-off events. [2024-10-11 14:33:52,843 INFO L125 PetriNetUnfolderBase]: For 17006/17158 co-relation queries the response was YES. [2024-10-11 14:33:52,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21544 conditions, 5139 events. 3249/5139 cut-off events. For 17006/17158 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 29409 event pairs, 1536 based on Foata normal form. 224/5320 useless extension candidates. Maximal degree in co-relation 20398. Up to 2036 conditions per place. [2024-10-11 14:33:52,874 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 147 selfloop transitions, 30 changer transitions 0/182 dead transitions. [2024-10-11 14:33:52,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 182 transitions, 2000 flow [2024-10-11 14:33:52,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:33:52,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:33:52,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-10-11 14:33:52,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49783549783549785 [2024-10-11 14:33:52,876 INFO L175 Difference]: Start difference. First operand has 130 places, 152 transitions, 1543 flow. Second operand 7 states and 115 transitions. [2024-10-11 14:33:52,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 182 transitions, 2000 flow [2024-10-11 14:33:52,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 182 transitions, 1971 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-11 14:33:52,939 INFO L231 Difference]: Finished difference. Result has 133 places, 131 transitions, 1371 flow [2024-10-11 14:33:52,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1371, PETRI_PLACES=133, PETRI_TRANSITIONS=131} [2024-10-11 14:33:52,941 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 98 predicate places. [2024-10-11 14:33:52,941 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 131 transitions, 1371 flow [2024-10-11 14:33:52,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 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) [2024-10-11 14:33:52,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:52,943 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] [2024-10-11 14:33:52,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 14:33:53,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:53,148 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)] === [2024-10-11 14:33:53,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:53,148 INFO L85 PathProgramCache]: Analyzing trace with hash 219929371, now seen corresponding path program 8 times [2024-10-11 14:33:53,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:53,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291511057] [2024-10-11 14:33:53,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:53,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:53,255 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:53,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:53,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291511057] [2024-10-11 14:33:53,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291511057] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:53,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857601451] [2024-10-11 14:33:53,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:33:53,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:53,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:53,258 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:53,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 14:33:53,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:33:53,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:33:53,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 14:33:53,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:53,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:33:53,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:53,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857601451] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:33:53,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:33:53,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-11 14:33:53,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277847813] [2024-10-11 14:33:53,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:33:53,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 14:33:53,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:53,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 14:33:53,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-11 14:33:53,547 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-10-11 14:33:53,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 131 transitions, 1371 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) [2024-10-11 14:33:53,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:53,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-10-11 14:33:53,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:54,095 INFO L124 PetriNetUnfolderBase]: 2556/4048 cut-off events. [2024-10-11 14:33:54,095 INFO L125 PetriNetUnfolderBase]: For 16341/16450 co-relation queries the response was YES. [2024-10-11 14:33:54,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17055 conditions, 4048 events. 2556/4048 cut-off events. For 16341/16450 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 22340 event pairs, 1265 based on Foata normal form. 238/4273 useless extension candidates. Maximal degree in co-relation 16196. Up to 1781 conditions per place. [2024-10-11 14:33:54,112 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 34 selfloop transitions, 3 changer transitions 100/142 dead transitions. [2024-10-11 14:33:54,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 142 transitions, 1682 flow [2024-10-11 14:33:54,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:33:54,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:33:54,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-10-11 14:33:54,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-10-11 14:33:54,114 INFO L175 Difference]: Start difference. First operand has 133 places, 131 transitions, 1371 flow. Second operand 7 states and 110 transitions. [2024-10-11 14:33:54,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 142 transitions, 1682 flow [2024-10-11 14:33:54,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 142 transitions, 1533 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-10-11 14:33:54,189 INFO L231 Difference]: Finished difference. Result has 129 places, 42 transitions, 249 flow [2024-10-11 14:33:54,189 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=249, PETRI_PLACES=129, PETRI_TRANSITIONS=42} [2024-10-11 14:33:54,189 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 94 predicate places. [2024-10-11 14:33:54,190 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 42 transitions, 249 flow [2024-10-11 14:33:54,190 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) [2024-10-11 14:33:54,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:54,190 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] [2024-10-11 14:33:54,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 14:33:54,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 14:33:54,395 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)] === [2024-10-11 14:33:54,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:54,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1610952141, now seen corresponding path program 9 times [2024-10-11 14:33:54,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:54,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345638474] [2024-10-11 14:33:54,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:54,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:54,510 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:54,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:54,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345638474] [2024-10-11 14:33:54,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345638474] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:54,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826211142] [2024-10-11 14:33:54,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:33:54,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:54,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:54,513 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:54,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 14:33:54,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 14:33:54,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:33:54,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 14:33:54,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:54,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:54,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:33:54,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:33:54,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826211142] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:33:54,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:33:54,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-11 14:33:54,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060386830] [2024-10-11 14:33:54,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:33:54,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 14:33:54,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:54,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 14:33:54,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-10-11 14:33:54,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-10-11 14:33:54,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 42 transitions, 249 flow. Second operand has 18 states, 18 states have (on average 7.722222222222222) internal successors, (139), 18 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:54,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:54,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-10-11 14:33:54,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:55,554 INFO L124 PetriNetUnfolderBase]: 2782/4050 cut-off events. [2024-10-11 14:33:55,554 INFO L125 PetriNetUnfolderBase]: For 9403/9421 co-relation queries the response was YES. [2024-10-11 14:33:55,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15194 conditions, 4050 events. 2782/4050 cut-off events. For 9403/9421 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 19876 event pairs, 703 based on Foata normal form. 18/3815 useless extension candidates. Maximal degree in co-relation 15161. Up to 1597 conditions per place. [2024-10-11 14:33:55,574 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 134 selfloop transitions, 22 changer transitions 0/160 dead transitions. [2024-10-11 14:33:55,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 160 transitions, 1299 flow [2024-10-11 14:33:55,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 14:33:55,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 14:33:55,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 177 transitions. [2024-10-11 14:33:55,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4125874125874126 [2024-10-11 14:33:55,575 INFO L175 Difference]: Start difference. First operand has 129 places, 42 transitions, 249 flow. Second operand 13 states and 177 transitions. [2024-10-11 14:33:55,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 160 transitions, 1299 flow [2024-10-11 14:33:55,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 160 transitions, 1139 flow, removed 56 selfloop flow, removed 19 redundant places. [2024-10-11 14:33:55,591 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 345 flow [2024-10-11 14:33:55,591 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=345, PETRI_PLACES=71, PETRI_TRANSITIONS=58} [2024-10-11 14:33:55,592 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 36 predicate places. [2024-10-11 14:33:55,592 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 345 flow [2024-10-11 14:33:55,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.722222222222222) internal successors, (139), 18 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:55,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:55,592 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] [2024-10-11 14:33:55,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 14:33:55,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 14:33:55,793 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)] === [2024-10-11 14:33:55,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:55,793 INFO L85 PathProgramCache]: Analyzing trace with hash 790397865, now seen corresponding path program 10 times [2024-10-11 14:33:55,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:55,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892606326] [2024-10-11 14:33:55,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:55,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:33:55,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:55,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892606326] [2024-10-11 14:33:55,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892606326] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:55,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086113240] [2024-10-11 14:33:55,916 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:33:55,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:55,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:55,918 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:55,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 14:33:55,987 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:33:55,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:33:55,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:33:55,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:56,073 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:33:56,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:33:56,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:33:56,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086113240] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:33:56,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:33:56,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2024-10-11 14:33:56,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200432877] [2024-10-11 14:33:56,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:33:56,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 14:33:56,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:56,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 14:33:56,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-10-11 14:33:56,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-10-11 14:33:56,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 345 flow. Second operand has 17 states, 17 states have (on average 7.529411764705882) internal successors, (128), 17 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:56,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:56,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-10-11 14:33:56,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:33:57,980 INFO L124 PetriNetUnfolderBase]: 6912/9869 cut-off events. [2024-10-11 14:33:57,980 INFO L125 PetriNetUnfolderBase]: For 17678/17678 co-relation queries the response was YES. [2024-10-11 14:33:58,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36346 conditions, 9869 events. 6912/9869 cut-off events. For 17678/17678 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 47912 event pairs, 164 based on Foata normal form. 23/9892 useless extension candidates. Maximal degree in co-relation 36324. Up to 3710 conditions per place. [2024-10-11 14:33:58,033 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 297 selfloop transitions, 179 changer transitions 0/477 dead transitions. [2024-10-11 14:33:58,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 477 transitions, 3756 flow [2024-10-11 14:33:58,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-11 14:33:58,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-10-11 14:33:58,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 476 transitions. [2024-10-11 14:33:58,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.379585326953748 [2024-10-11 14:33:58,035 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 345 flow. Second operand 38 states and 476 transitions. [2024-10-11 14:33:58,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 477 transitions, 3756 flow [2024-10-11 14:33:58,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 477 transitions, 3743 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-10-11 14:33:58,077 INFO L231 Difference]: Finished difference. Result has 122 places, 221 transitions, 2149 flow [2024-10-11 14:33:58,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=2149, PETRI_PLACES=122, PETRI_TRANSITIONS=221} [2024-10-11 14:33:58,078 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 87 predicate places. [2024-10-11 14:33:58,078 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 221 transitions, 2149 flow [2024-10-11 14:33:58,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.529411764705882) internal successors, (128), 17 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:33:58,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:33:58,079 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] [2024-10-11 14:33:58,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-11 14:33:58,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 14:33:58,279 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)] === [2024-10-11 14:33:58,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:33:58,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1512394287, now seen corresponding path program 11 times [2024-10-11 14:33:58,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:33:58,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379671956] [2024-10-11 14:33:58,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:33:58,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:33:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:33:58,445 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 14:33:58,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:33:58,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379671956] [2024-10-11 14:33:58,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379671956] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:33:58,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730849367] [2024-10-11 14:33:58,445 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:33:58,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:33:58,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:33:58,447 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:33:58,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 14:33:58,523 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 14:33:58,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:33:58,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:33:58,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:33:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:33:58,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:33:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:33:58,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730849367] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:33:58,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:33:58,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2024-10-11 14:33:58,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841341727] [2024-10-11 14:33:58,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:33:58,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 14:33:58,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:33:58,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 14:33:58,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-10-11 14:33:58,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-10-11 14:33:58,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 221 transitions, 2149 flow. Second operand has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 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) [2024-10-11 14:33:58,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:33:58,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-10-11 14:33:58,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:01,166 INFO L124 PetriNetUnfolderBase]: 10782/15332 cut-off events. [2024-10-11 14:34:01,166 INFO L125 PetriNetUnfolderBase]: For 69306/69306 co-relation queries the response was YES. [2024-10-11 14:34:01,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70061 conditions, 15332 events. 10782/15332 cut-off events. For 69306/69306 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 80045 event pairs, 651 based on Foata normal form. 24/15356 useless extension candidates. Maximal degree in co-relation 70021. Up to 6320 conditions per place. [2024-10-11 14:34:01,276 INFO L140 encePairwiseOnDemand]: 18/33 looper letters, 344 selfloop transitions, 477 changer transitions 0/822 dead transitions. [2024-10-11 14:34:01,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 822 transitions, 8513 flow [2024-10-11 14:34:01,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-11 14:34:01,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-10-11 14:34:01,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 578 transitions. [2024-10-11 14:34:01,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39807162534435264 [2024-10-11 14:34:01,279 INFO L175 Difference]: Start difference. First operand has 122 places, 221 transitions, 2149 flow. Second operand 44 states and 578 transitions. [2024-10-11 14:34:01,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 822 transitions, 8513 flow [2024-10-11 14:34:01,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 822 transitions, 8302 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-10-11 14:34:01,769 INFO L231 Difference]: Finished difference. Result has 178 places, 542 transitions, 6789 flow [2024-10-11 14:34:01,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=6789, PETRI_PLACES=178, PETRI_TRANSITIONS=542} [2024-10-11 14:34:01,770 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 143 predicate places. [2024-10-11 14:34:01,770 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 542 transitions, 6789 flow [2024-10-11 14:34:01,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 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) [2024-10-11 14:34:01,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:01,770 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] [2024-10-11 14:34:01,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 14:34:01,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:01,971 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)] === [2024-10-11 14:34:01,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:01,972 INFO L85 PathProgramCache]: Analyzing trace with hash -759651157, now seen corresponding path program 12 times [2024-10-11 14:34:01,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:01,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792547044] [2024-10-11 14:34:01,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:01,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 14:34:02,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:02,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792547044] [2024-10-11 14:34:02,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792547044] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:34:02,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265782191] [2024-10-11 14:34:02,179 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:34:02,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:02,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:34:02,182 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:34:02,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 14:34:02,271 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 14:34:02,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:34:02,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:34:02,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:34:02,364 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:34:02,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:34:02,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:34:02,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265782191] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:34:02,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:34:02,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2024-10-11 14:34:02,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894868514] [2024-10-11 14:34:02,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:34:02,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 14:34:02,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:02,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 14:34:02,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-10-11 14:34:02,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-10-11 14:34:02,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 542 transitions, 6789 flow. Second operand has 18 states, 18 states have (on average 6.833333333333333) internal successors, (123), 18 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:02,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:02,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-10-11 14:34:02,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:08,134 INFO L124 PetriNetUnfolderBase]: 16227/22868 cut-off events. [2024-10-11 14:34:08,135 INFO L125 PetriNetUnfolderBase]: For 151001/151001 co-relation queries the response was YES. [2024-10-11 14:34:08,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120157 conditions, 22868 events. 16227/22868 cut-off events. For 151001/151001 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 123573 event pairs, 522 based on Foata normal form. 24/22892 useless extension candidates. Maximal degree in co-relation 120099. Up to 9366 conditions per place. [2024-10-11 14:34:08,318 INFO L140 encePairwiseOnDemand]: 18/33 looper letters, 749 selfloop transitions, 746 changer transitions 0/1496 dead transitions. [2024-10-11 14:34:08,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 1496 transitions, 17740 flow [2024-10-11 14:34:08,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-10-11 14:34:08,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2024-10-11 14:34:08,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 1320 transitions. [2024-10-11 14:34:08,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39603960396039606 [2024-10-11 14:34:08,322 INFO L175 Difference]: Start difference. First operand has 178 places, 542 transitions, 6789 flow. Second operand 101 states and 1320 transitions. [2024-10-11 14:34:08,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 1496 transitions, 17740 flow [2024-10-11 14:34:10,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 1496 transitions, 16893 flow, removed 255 selfloop flow, removed 6 redundant places. [2024-10-11 14:34:10,323 INFO L231 Difference]: Finished difference. Result has 308 places, 895 transitions, 13124 flow [2024-10-11 14:34:10,324 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6341, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=411, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=101, PETRI_FLOW=13124, PETRI_PLACES=308, PETRI_TRANSITIONS=895} [2024-10-11 14:34:10,324 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 273 predicate places. [2024-10-11 14:34:10,324 INFO L471 AbstractCegarLoop]: Abstraction has has 308 places, 895 transitions, 13124 flow [2024-10-11 14:34:10,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.833333333333333) internal successors, (123), 18 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:10,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:10,325 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] [2024-10-11 14:34:10,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-11 14:34:10,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 14:34:10,526 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:10,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:10,526 INFO L85 PathProgramCache]: Analyzing trace with hash -450191007, now seen corresponding path program 13 times [2024-10-11 14:34:10,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:10,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786742482] [2024-10-11 14:34:10,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:10,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:10,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 14:34:10,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:10,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786742482] [2024-10-11 14:34:10,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786742482] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:34:10,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952024463] [2024-10-11 14:34:10,677 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:34:10,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:10,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:34:10,678 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:34:10,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 14:34:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:10,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 14:34:10,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:34:10,863 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 14:34:10,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:34:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 14:34:10,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952024463] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:34:10,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:34:10,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-11 14:34:10,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750509558] [2024-10-11 14:34:10,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:34:10,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 14:34:10,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:10,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 14:34:10,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-10-11 14:34:11,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-10-11 14:34:11,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 895 transitions, 13124 flow. Second operand has 20 states, 20 states have (on average 7.65) internal successors, (153), 20 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:11,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:11,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-10-11 14:34:11,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:15,441 INFO L124 PetriNetUnfolderBase]: 13214/18783 cut-off events. [2024-10-11 14:34:15,441 INFO L125 PetriNetUnfolderBase]: For 143000/143000 co-relation queries the response was YES. [2024-10-11 14:34:15,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109170 conditions, 18783 events. 13214/18783 cut-off events. For 143000/143000 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 108928 event pairs, 1056 based on Foata normal form. 18/18797 useless extension candidates. Maximal degree in co-relation 109076. Up to 8750 conditions per place. [2024-10-11 14:34:15,643 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 631 selfloop transitions, 605 changer transitions 0/1240 dead transitions. [2024-10-11 14:34:15,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 1240 transitions, 19147 flow [2024-10-11 14:34:15,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 14:34:15,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-11 14:34:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 406 transitions. [2024-10-11 14:34:15,645 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4556677890011223 [2024-10-11 14:34:15,645 INFO L175 Difference]: Start difference. First operand has 308 places, 895 transitions, 13124 flow. Second operand 27 states and 406 transitions. [2024-10-11 14:34:15,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 1240 transitions, 19147 flow [2024-10-11 14:34:18,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 1240 transitions, 17211 flow, removed 538 selfloop flow, removed 16 redundant places. [2024-10-11 14:34:18,133 INFO L231 Difference]: Finished difference. Result has 325 places, 1010 transitions, 14835 flow [2024-10-11 14:34:18,134 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11803, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=895, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=14835, PETRI_PLACES=325, PETRI_TRANSITIONS=1010} [2024-10-11 14:34:18,134 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 290 predicate places. [2024-10-11 14:34:18,135 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 1010 transitions, 14835 flow [2024-10-11 14:34:18,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.65) internal successors, (153), 20 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:18,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:18,135 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] [2024-10-11 14:34:18,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-11 14:34:18,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 14:34:18,336 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:18,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:18,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1529634371, now seen corresponding path program 14 times [2024-10-11 14:34:18,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:18,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259753249] [2024-10-11 14:34:18,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:18,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:18,481 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 14:34:18,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:18,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259753249] [2024-10-11 14:34:18,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259753249] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:34:18,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892932022] [2024-10-11 14:34:18,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:34:18,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:18,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:34:18,484 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:34:18,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 14:34:18,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:34:18,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:34:18,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 14:34:18,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:34:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 14:34:18,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:34:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 14:34:18,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892932022] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:34:18,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:34:18,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-10-11 14:34:18,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031277570] [2024-10-11 14:34:18,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:34:18,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 14:34:18,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:18,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 14:34:18,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-10-11 14:34:18,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-10-11 14:34:18,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 1010 transitions, 14835 flow. Second operand has 21 states, 21 states have (on average 7.142857142857143) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:18,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:18,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-10-11 14:34:18,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:23,178 INFO L124 PetriNetUnfolderBase]: 14549/20685 cut-off events. [2024-10-11 14:34:23,178 INFO L125 PetriNetUnfolderBase]: For 153688/153688 co-relation queries the response was YES. [2024-10-11 14:34:23,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118503 conditions, 20685 events. 14549/20685 cut-off events. For 153688/153688 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 121597 event pairs, 1849 based on Foata normal form. 17/20698 useless extension candidates. Maximal degree in co-relation 118414. Up to 9738 conditions per place. [2024-10-11 14:34:23,376 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 711 selfloop transitions, 538 changer transitions 0/1253 dead transitions. [2024-10-11 14:34:23,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 1253 transitions, 19720 flow [2024-10-11 14:34:23,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 14:34:23,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-11 14:34:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 278 transitions. [2024-10-11 14:34:23,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4433811802232855 [2024-10-11 14:34:23,555 INFO L175 Difference]: Start difference. First operand has 325 places, 1010 transitions, 14835 flow. Second operand 19 states and 278 transitions. [2024-10-11 14:34:23,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 1253 transitions, 19720 flow [2024-10-11 14:34:25,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 1253 transitions, 19109 flow, removed 77 selfloop flow, removed 15 redundant places. [2024-10-11 14:34:25,739 INFO L231 Difference]: Finished difference. Result has 333 places, 1082 transitions, 17047 flow [2024-10-11 14:34:25,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=14224, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1007, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=463, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=17047, PETRI_PLACES=333, PETRI_TRANSITIONS=1082} [2024-10-11 14:34:25,740 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 298 predicate places. [2024-10-11 14:34:25,740 INFO L471 AbstractCegarLoop]: Abstraction has has 333 places, 1082 transitions, 17047 flow [2024-10-11 14:34:25,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.142857142857143) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:25,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:25,740 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] [2024-10-11 14:34:25,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-11 14:34:25,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:25,941 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:25,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:25,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1947892825, now seen corresponding path program 15 times [2024-10-11 14:34:25,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:25,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174729621] [2024-10-11 14:34:25,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:25,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 14:34:26,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:26,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174729621] [2024-10-11 14:34:26,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174729621] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:34:26,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635114665] [2024-10-11 14:34:26,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:34:26,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:26,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:34:26,061 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:34:26,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 14:34:26,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 14:34:26,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:34:26,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 14:34:26,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:34:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 14:34:26,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:34:26,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 14:34:26,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635114665] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:34:26,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:34:26,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-10-11 14:34:26,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680399699] [2024-10-11 14:34:26,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:34:26,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 14:34:26,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:26,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 14:34:26,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2024-10-11 14:34:26,382 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-10-11 14:34:26,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 1082 transitions, 17047 flow. Second operand has 19 states, 19 states have (on average 7.157894736842105) internal successors, (136), 19 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) [2024-10-11 14:34:26,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:26,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-10-11 14:34:26,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:34:30,944 INFO L124 PetriNetUnfolderBase]: 14691/20837 cut-off events. [2024-10-11 14:34:30,944 INFO L125 PetriNetUnfolderBase]: For 192001/192001 co-relation queries the response was YES. [2024-10-11 14:34:31,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124196 conditions, 20837 events. 14691/20837 cut-off events. For 192001/192001 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 121646 event pairs, 1854 based on Foata normal form. 18/20851 useless extension candidates. Maximal degree in co-relation 124109. Up to 9882 conditions per place. [2024-10-11 14:34:31,253 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 678 selfloop transitions, 529 changer transitions 0/1211 dead transitions. [2024-10-11 14:34:31,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 1211 transitions, 20344 flow [2024-10-11 14:34:31,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 14:34:31,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 14:34:31,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 239 transitions. [2024-10-11 14:34:31,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42602495543672014 [2024-10-11 14:34:31,255 INFO L175 Difference]: Start difference. First operand has 333 places, 1082 transitions, 17047 flow. Second operand 17 states and 239 transitions. [2024-10-11 14:34:31,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 1211 transitions, 20344 flow [2024-10-11 14:34:33,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 1211 transitions, 20166 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-10-11 14:34:33,878 INFO L231 Difference]: Finished difference. Result has 343 places, 1088 transitions, 18098 flow [2024-10-11 14:34:33,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=16893, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1082, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=523, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=18098, PETRI_PLACES=343, PETRI_TRANSITIONS=1088} [2024-10-11 14:34:33,879 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 308 predicate places. [2024-10-11 14:34:33,879 INFO L471 AbstractCegarLoop]: Abstraction has has 343 places, 1088 transitions, 18098 flow [2024-10-11 14:34:33,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.157894736842105) internal successors, (136), 19 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) [2024-10-11 14:34:33,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:34:33,880 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] [2024-10-11 14:34:33,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-11 14:34:34,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:34,080 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:34:34,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:34:34,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1666554393, now seen corresponding path program 16 times [2024-10-11 14:34:34,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:34:34,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959875489] [2024-10-11 14:34:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:34:34,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:34:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:34:34,196 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 14:34:34,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:34:34,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959875489] [2024-10-11 14:34:34,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959875489] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:34:34,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152282288] [2024-10-11 14:34:34,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:34:34,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:34:34,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:34:34,199 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:34:34,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-11 14:34:34,272 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:34:34,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:34:34,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:34:34,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:34:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:34:34,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:34:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:34:34,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152282288] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:34:34,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:34:34,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2024-10-11 14:34:34,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518477107] [2024-10-11 14:34:34,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:34:34,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 14:34:34,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:34:34,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 14:34:34,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-10-11 14:34:34,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-10-11 14:34:34,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 1088 transitions, 18098 flow. Second operand has 19 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 19 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:34:34,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:34:34,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-10-11 14:34:34,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand