./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/chl-array-int-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:05:52,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:05:52,604 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:05:52,607 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:05:52,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:05:52,625 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:05:52,628 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:05:52,629 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:05:52,630 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:05:52,630 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:05:52,630 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:05:52,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:05:52,631 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:05:52,631 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:05:52,632 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:05:52,633 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:05:52,633 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:05:52,634 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:05:52,634 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:05:52,634 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:05:52,638 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:05:52,638 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:05:52,638 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:05:52,639 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:05:52,639 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:05:52,639 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:05:52,639 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:05:52,639 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:05:52,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:05:52,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:05:52,640 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:05:52,640 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:05:52,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:05:52,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:05:52,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:05:52,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:05:52,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:05:52,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:05:52,641 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:05:52,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:05:52,641 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:05:52,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:05:52,641 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 [2024-10-13 07:05:52,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:05:52,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:05:52,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:05:52,854 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:05:52,854 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:05:52,855 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2024-10-13 07:05:54,138 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:05:54,282 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:05:54,283 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2024-10-13 07:05:54,291 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf98521a3/3a128ca18cfc4f6eac366c4bde5812b7/FLAGfdbbfd61b [2024-10-13 07:05:54,688 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf98521a3/3a128ca18cfc4f6eac366c4bde5812b7 [2024-10-13 07:05:54,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:05:54,691 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:05:54,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:05:54,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:05:54,697 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:05:54,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:05:54" (1/1) ... [2024-10-13 07:05:54,698 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62e9bea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:54, skipping insertion in model container [2024-10-13 07:05:54,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:05:54" (1/1) ... [2024-10-13 07:05:54,724 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:05:54,902 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/chl-array-int-subst.wvr.c[2820,2833] [2024-10-13 07:05:54,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:05:54,924 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:05:54,962 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/chl-array-int-subst.wvr.c[2820,2833] [2024-10-13 07:05:54,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:05:54,978 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:05:54,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:54 WrapperNode [2024-10-13 07:05:54,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:05:54,979 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:05:54,980 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:05:54,980 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:05:54,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:54" (1/1) ... [2024-10-13 07:05:54,993 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:54" (1/1) ... [2024-10-13 07:05:55,017 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 274 [2024-10-13 07:05:55,018 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:05:55,021 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:05:55,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:05:55,021 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:05:55,031 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:54" (1/1) ... [2024-10-13 07:05:55,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:54" (1/1) ... [2024-10-13 07:05:55,035 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:54" (1/1) ... [2024-10-13 07:05:55,061 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-13 07:05:55,062 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:54" (1/1) ... [2024-10-13 07:05:55,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:54" (1/1) ... [2024-10-13 07:05:55,074 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:54" (1/1) ... [2024-10-13 07:05:55,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:54" (1/1) ... [2024-10-13 07:05:55,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:54" (1/1) ... [2024-10-13 07:05:55,085 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:54" (1/1) ... [2024-10-13 07:05:55,088 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:05:55,089 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:05:55,089 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:05:55,089 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:05:55,090 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:54" (1/1) ... [2024-10-13 07:05:55,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:05:55,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:05:55,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 07:05:55,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 07:05:55,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:05:55,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 07:05:55,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 07:05:55,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 07:05:55,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 07:05:55,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 07:05:55,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 07:05:55,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:05:55,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 07:05:55,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 07:05:55,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 07:05:55,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 07:05:55,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:05:55,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:05:55,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 07:05:55,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 07:05:55,181 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:05:55,304 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:05:55,306 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:05:55,727 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:05:55,728 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:05:56,027 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:05:56,028 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-13 07:05:56,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:05:56 BoogieIcfgContainer [2024-10-13 07:05:56,029 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:05:56,031 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:05:56,032 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:05:56,035 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:05:56,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:05:54" (1/3) ... [2024-10-13 07:05:56,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47747a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:05:56, skipping insertion in model container [2024-10-13 07:05:56,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:54" (2/3) ... [2024-10-13 07:05:56,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47747a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:05:56, skipping insertion in model container [2024-10-13 07:05:56,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:05:56" (3/3) ... [2024-10-13 07:05:56,043 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2024-10-13 07:05:56,059 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:05:56,059 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:05:56,059 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:05:56,152 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 07:05:56,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 101 flow [2024-10-13 07:05:56,219 INFO L124 PetriNetUnfolderBase]: 9/37 cut-off events. [2024-10-13 07:05:56,220 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 07:05:56,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 9/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-13 07:05:56,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 101 flow [2024-10-13 07:05:56,228 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 36 transitions, 90 flow [2024-10-13 07:05:56,237 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:05:56,242 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;@79aeebe8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:05:56,243 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-13 07:05:56,253 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:05:56,253 INFO L124 PetriNetUnfolderBase]: 9/35 cut-off events. [2024-10-13 07:05:56,253 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 07:05:56,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:05:56,254 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:05:56,255 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)] === [2024-10-13 07:05:56,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:05:56,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1313884014, now seen corresponding path program 1 times [2024-10-13 07:05:56,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:05:56,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465601205] [2024-10-13 07:05:56,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:05:56,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:05:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:05:57,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:57,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:05:57,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465601205] [2024-10-13 07:05:57,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465601205] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:05:57,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:05:57,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 07:05:57,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587999156] [2024-10-13 07:05:57,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:05:57,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:05:57,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:05:57,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:05:57,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-13 07:05:57,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:05:57,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 90 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:05:57,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:05:57,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:05:57,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:05:58,156 INFO L124 PetriNetUnfolderBase]: 2833/3857 cut-off events. [2024-10-13 07:05:58,157 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-10-13 07:05:58,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7959 conditions, 3857 events. 2833/3857 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 15276 event pairs, 264 based on Foata normal form. 1/2780 useless extension candidates. Maximal degree in co-relation 4518. Up to 1286 conditions per place. [2024-10-13 07:05:58,184 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 131 selfloop transitions, 18 changer transitions 1/151 dead transitions. [2024-10-13 07:05:58,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 151 transitions, 680 flow [2024-10-13 07:05:58,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:05:58,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:05:58,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-10-13 07:05:58,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-10-13 07:05:58,198 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 90 flow. Second operand 11 states and 195 transitions. [2024-10-13 07:05:58,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 151 transitions, 680 flow [2024-10-13 07:05:58,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 151 transitions, 628 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 07:05:58,211 INFO L231 Difference]: Finished difference. Result has 45 places, 54 transitions, 186 flow [2024-10-13 07:05:58,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=186, PETRI_PLACES=45, PETRI_TRANSITIONS=54} [2024-10-13 07:05:58,217 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2024-10-13 07:05:58,218 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 54 transitions, 186 flow [2024-10-13 07:05:58,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:05:58,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:05:58,218 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:05:58,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:05:58,219 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)] === [2024-10-13 07:05:58,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:05:58,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1734295646, now seen corresponding path program 2 times [2024-10-13 07:05:58,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:05:58,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367017270] [2024-10-13 07:05:58,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:05:58,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:05:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:05:58,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:58,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:05:58,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367017270] [2024-10-13 07:05:58,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367017270] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:05:58,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:05:58,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 07:05:58,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151628812] [2024-10-13 07:05:58,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:05:58,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:05:58,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:05:58,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:05:58,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-13 07:05:58,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:05:58,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 54 transitions, 186 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:05:58,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:05:58,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:05:58,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:05:59,187 INFO L124 PetriNetUnfolderBase]: 3203/4412 cut-off events. [2024-10-13 07:05:59,187 INFO L125 PetriNetUnfolderBase]: For 609/609 co-relation queries the response was YES. [2024-10-13 07:05:59,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9721 conditions, 4412 events. 3203/4412 cut-off events. For 609/609 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 18390 event pairs, 1123 based on Foata normal form. 1/3603 useless extension candidates. Maximal degree in co-relation 9452. Up to 1844 conditions per place. [2024-10-13 07:05:59,212 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 107 selfloop transitions, 16 changer transitions 1/125 dead transitions. [2024-10-13 07:05:59,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 125 transitions, 603 flow [2024-10-13 07:05:59,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:05:59,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:05:59,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-10-13 07:05:59,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-10-13 07:05:59,216 INFO L175 Difference]: Start difference. First operand has 45 places, 54 transitions, 186 flow. Second operand 9 states and 155 transitions. [2024-10-13 07:05:59,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 125 transitions, 603 flow [2024-10-13 07:05:59,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 125 transitions, 597 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-13 07:05:59,221 INFO L231 Difference]: Finished difference. Result has 54 places, 57 transitions, 235 flow [2024-10-13 07:05:59,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=235, PETRI_PLACES=54, PETRI_TRANSITIONS=57} [2024-10-13 07:05:59,221 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 17 predicate places. [2024-10-13 07:05:59,221 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 57 transitions, 235 flow [2024-10-13 07:05:59,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:05:59,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:05:59,223 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:05:59,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:05:59,223 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)] === [2024-10-13 07:05:59,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:05:59,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1863214200, now seen corresponding path program 1 times [2024-10-13 07:05:59,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:05:59,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920945961] [2024-10-13 07:05:59,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:05:59,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:05:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:05:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:59,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:05:59,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920945961] [2024-10-13 07:05:59,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920945961] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:05:59,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951899705] [2024-10-13 07:05:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:05:59,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:05:59,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:05:59,396 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:05:59,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 07:05:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:05:59,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:05:59,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:05:59,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:59,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:05:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:05:59,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951899705] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:05:59,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:05:59,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-10-13 07:05:59,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741512257] [2024-10-13 07:05:59,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:05:59,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:05:59,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:05:59,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:05:59,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-13 07:05:59,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:05:59,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 57 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:05:59,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:05:59,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:05:59,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:00,267 INFO L124 PetriNetUnfolderBase]: 4519/6228 cut-off events. [2024-10-13 07:06:00,268 INFO L125 PetriNetUnfolderBase]: For 1771/1771 co-relation queries the response was YES. [2024-10-13 07:06:00,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14495 conditions, 6228 events. 4519/6228 cut-off events. For 1771/1771 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 27718 event pairs, 2393 based on Foata normal form. 1/5119 useless extension candidates. Maximal degree in co-relation 14190. Up to 2983 conditions per place. [2024-10-13 07:06:00,291 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 124 selfloop transitions, 8 changer transitions 5/138 dead transitions. [2024-10-13 07:06:00,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 138 transitions, 740 flow [2024-10-13 07:06:00,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:06:00,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:06:00,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-10-13 07:06:00,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-10-13 07:06:00,294 INFO L175 Difference]: Start difference. First operand has 54 places, 57 transitions, 235 flow. Second operand 6 states and 147 transitions. [2024-10-13 07:06:00,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 138 transitions, 740 flow [2024-10-13 07:06:00,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 138 transitions, 720 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 07:06:00,304 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 250 flow [2024-10-13 07:06:00,304 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2024-10-13 07:06:00,304 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 20 predicate places. [2024-10-13 07:06:00,305 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 250 flow [2024-10-13 07:06:00,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:00,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:00,305 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:00,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 07:06:00,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:00,510 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)] === [2024-10-13 07:06:00,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:00,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1029468692, now seen corresponding path program 1 times [2024-10-13 07:06:00,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:00,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586380479] [2024-10-13 07:06:00,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:00,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:00,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:00,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:00,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586380479] [2024-10-13 07:06:00,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586380479] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:00,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146538143] [2024-10-13 07:06:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:00,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:00,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:00,756 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:00,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 07:06:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:00,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 07:06:00,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:01,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:01,022 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:06:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:01,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146538143] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:01,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:06:01,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2024-10-13 07:06:01,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539484164] [2024-10-13 07:06:01,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:01,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:06:01,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:01,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:06:01,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-10-13 07:06:01,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:01,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 250 flow. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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) [2024-10-13 07:06:01,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:01,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:01,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:02,161 INFO L124 PetriNetUnfolderBase]: 6283/8623 cut-off events. [2024-10-13 07:06:02,162 INFO L125 PetriNetUnfolderBase]: For 2838/2838 co-relation queries the response was YES. [2024-10-13 07:06:02,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20681 conditions, 8623 events. 6283/8623 cut-off events. For 2838/2838 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 40551 event pairs, 929 based on Foata normal form. 1/7445 useless extension candidates. Maximal degree in co-relation 17508. Up to 2987 conditions per place. [2024-10-13 07:06:02,195 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 165 selfloop transitions, 20 changer transitions 1/187 dead transitions. [2024-10-13 07:06:02,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 187 transitions, 987 flow [2024-10-13 07:06:02,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:06:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:06:02,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-10-13 07:06:02,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 07:06:02,197 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 250 flow. Second operand 11 states and 220 transitions. [2024-10-13 07:06:02,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 187 transitions, 987 flow [2024-10-13 07:06:02,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 187 transitions, 976 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 07:06:02,209 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 335 flow [2024-10-13 07:06:02,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=335, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-10-13 07:06:02,209 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 30 predicate places. [2024-10-13 07:06:02,209 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 335 flow [2024-10-13 07:06:02,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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) [2024-10-13 07:06:02,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:02,210 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:02,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 07:06:02,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-13 07:06:02,411 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)] === [2024-10-13 07:06:02,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:02,411 INFO L85 PathProgramCache]: Analyzing trace with hash 875880000, now seen corresponding path program 1 times [2024-10-13 07:06:02,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:02,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071751956] [2024-10-13 07:06:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:02,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:02,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:02,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:02,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071751956] [2024-10-13 07:06:02,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071751956] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:02,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841921078] [2024-10-13 07:06:02,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:02,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:02,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:02,540 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:02,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 07:06:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:02,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:06:02,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:02,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:02,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:06:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:02,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841921078] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:02,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:06:02,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2024-10-13 07:06:02,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440375302] [2024-10-13 07:06:02,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:02,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:06:02,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:02,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:06:02,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-13 07:06:02,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:02,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 335 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-10-13 07:06:02,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:02,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:02,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:03,481 INFO L124 PetriNetUnfolderBase]: 7600/10441 cut-off events. [2024-10-13 07:06:03,482 INFO L125 PetriNetUnfolderBase]: For 6913/6913 co-relation queries the response was YES. [2024-10-13 07:06:03,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26593 conditions, 10441 events. 7600/10441 cut-off events. For 6913/6913 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 50473 event pairs, 4358 based on Foata normal form. 1/9023 useless extension candidates. Maximal degree in co-relation 23250. Up to 7293 conditions per place. [2024-10-13 07:06:03,525 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 141 selfloop transitions, 8 changer transitions 5/155 dead transitions. [2024-10-13 07:06:03,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 155 transitions, 952 flow [2024-10-13 07:06:03,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:06:03,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:06:03,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-10-13 07:06:03,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5392857142857143 [2024-10-13 07:06:03,527 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 335 flow. Second operand 7 states and 151 transitions. [2024-10-13 07:06:03,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 155 transitions, 952 flow [2024-10-13 07:06:03,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 155 transitions, 913 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-13 07:06:03,560 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 356 flow [2024-10-13 07:06:03,560 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=356, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2024-10-13 07:06:03,560 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 35 predicate places. [2024-10-13 07:06:03,561 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 356 flow [2024-10-13 07:06:03,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-10-13 07:06:03,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:03,561 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:03,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 07:06:03,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:03,766 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)] === [2024-10-13 07:06:03,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:03,767 INFO L85 PathProgramCache]: Analyzing trace with hash 862633564, now seen corresponding path program 1 times [2024-10-13 07:06:03,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:03,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388574516] [2024-10-13 07:06:03,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:03,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:03,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:03,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:03,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388574516] [2024-10-13 07:06:03,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388574516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:03,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:03,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:06:03,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638839476] [2024-10-13 07:06:03,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:03,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:06:03,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:03,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:06:03,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:06:03,860 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:03,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 356 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:03,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:03,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:03,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:04,371 INFO L124 PetriNetUnfolderBase]: 5369/7551 cut-off events. [2024-10-13 07:06:04,371 INFO L125 PetriNetUnfolderBase]: For 5385/5385 co-relation queries the response was YES. [2024-10-13 07:06:04,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19352 conditions, 7551 events. 5369/7551 cut-off events. For 5385/5385 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 36426 event pairs, 2062 based on Foata normal form. 0/6686 useless extension candidates. Maximal degree in co-relation 17336. Up to 3677 conditions per place. [2024-10-13 07:06:04,399 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 100 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2024-10-13 07:06:04,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 111 transitions, 704 flow [2024-10-13 07:06:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:06:04,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:06:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-10-13 07:06:04,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-10-13 07:06:04,400 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 356 flow. Second operand 5 states and 103 transitions. [2024-10-13 07:06:04,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 111 transitions, 704 flow [2024-10-13 07:06:04,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 111 transitions, 676 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-10-13 07:06:04,418 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 333 flow [2024-10-13 07:06:04,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=333, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2024-10-13 07:06:04,419 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 36 predicate places. [2024-10-13 07:06:04,419 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 333 flow [2024-10-13 07:06:04,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:04,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:04,419 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:04,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 07:06:04,419 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)] === [2024-10-13 07:06:04,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:04,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1923356212, now seen corresponding path program 2 times [2024-10-13 07:06:04,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:04,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426978081] [2024-10-13 07:06:04,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:04,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:04,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:04,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:04,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426978081] [2024-10-13 07:06:04,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426978081] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:04,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58089572] [2024-10-13 07:06:04,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:06:04,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:04,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:04,635 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:04,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 07:06:04,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 07:06:04,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:06:04,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 07:06:04,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:04,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:06:04,866 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:06:04,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58089572] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:04,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:06:04,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2024-10-13 07:06:04,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557196165] [2024-10-13 07:06:04,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:04,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:06:04,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:04,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:06:04,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-10-13 07:06:04,868 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:04,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 333 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-10-13 07:06:04,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:04,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:04,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:05,703 INFO L124 PetriNetUnfolderBase]: 8480/11950 cut-off events. [2024-10-13 07:06:05,703 INFO L125 PetriNetUnfolderBase]: For 9525/9525 co-relation queries the response was YES. [2024-10-13 07:06:05,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30273 conditions, 11950 events. 8480/11950 cut-off events. For 9525/9525 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 64161 event pairs, 1600 based on Foata normal form. 1/10542 useless extension candidates. Maximal degree in co-relation 27120. Up to 3740 conditions per place. [2024-10-13 07:06:05,751 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 154 selfloop transitions, 48 changer transitions 2/205 dead transitions. [2024-10-13 07:06:05,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 205 transitions, 1316 flow [2024-10-13 07:06:05,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:06:05,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:06:05,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-10-13 07:06:05,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4675 [2024-10-13 07:06:05,753 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 333 flow. Second operand 10 states and 187 transitions. [2024-10-13 07:06:05,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 205 transitions, 1316 flow [2024-10-13 07:06:05,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 205 transitions, 1291 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-13 07:06:05,774 INFO L231 Difference]: Finished difference. Result has 85 places, 103 transitions, 775 flow [2024-10-13 07:06:05,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=775, PETRI_PLACES=85, PETRI_TRANSITIONS=103} [2024-10-13 07:06:05,775 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 48 predicate places. [2024-10-13 07:06:05,775 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 103 transitions, 775 flow [2024-10-13 07:06:05,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-10-13 07:06:05,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:05,775 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:05,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 07:06:05,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:05,980 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)] === [2024-10-13 07:06:05,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:05,982 INFO L85 PathProgramCache]: Analyzing trace with hash 719547290, now seen corresponding path program 3 times [2024-10-13 07:06:05,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:05,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525662988] [2024-10-13 07:06:05,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:05,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:06,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:06,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:06,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525662988] [2024-10-13 07:06:06,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525662988] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:06,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693623347] [2024-10-13 07:06:06,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:06:06,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:06,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:06,236 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:06,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 07:06:06,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-13 07:06:06,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:06:06,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 07:06:06,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:06,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:06:06,461 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:06:06,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693623347] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:06,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:06:06,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2024-10-13 07:06:06,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430916105] [2024-10-13 07:06:06,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:06,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:06:06,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:06,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:06:06,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-10-13 07:06:06,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:06,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 103 transitions, 775 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-10-13 07:06:06,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:06,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:06,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:07,685 INFO L124 PetriNetUnfolderBase]: 10833/15252 cut-off events. [2024-10-13 07:06:07,685 INFO L125 PetriNetUnfolderBase]: For 21941/21941 co-relation queries the response was YES. [2024-10-13 07:06:07,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42454 conditions, 15252 events. 10833/15252 cut-off events. For 21941/21941 co-relation queries the response was YES. Maximal size of possible extension queue 755. Compared 83628 event pairs, 1795 based on Foata normal form. 1/13768 useless extension candidates. Maximal degree in co-relation 36253. Up to 4608 conditions per place. [2024-10-13 07:06:07,756 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 143 selfloop transitions, 62 changer transitions 1/207 dead transitions. [2024-10-13 07:06:07,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 207 transitions, 1605 flow [2024-10-13 07:06:07,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:06:07,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:06:07,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-10-13 07:06:07,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-10-13 07:06:07,757 INFO L175 Difference]: Start difference. First operand has 85 places, 103 transitions, 775 flow. Second operand 10 states and 184 transitions. [2024-10-13 07:06:07,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 207 transitions, 1605 flow [2024-10-13 07:06:07,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 207 transitions, 1571 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-10-13 07:06:07,853 INFO L231 Difference]: Finished difference. Result has 97 places, 116 transitions, 1087 flow [2024-10-13 07:06:07,853 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1087, PETRI_PLACES=97, PETRI_TRANSITIONS=116} [2024-10-13 07:06:07,854 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 60 predicate places. [2024-10-13 07:06:07,854 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 116 transitions, 1087 flow [2024-10-13 07:06:07,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-10-13 07:06:07,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:07,854 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:07,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 07:06:08,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:08,059 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)] === [2024-10-13 07:06:08,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:08,060 INFO L85 PathProgramCache]: Analyzing trace with hash -620935228, now seen corresponding path program 4 times [2024-10-13 07:06:08,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:08,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440272959] [2024-10-13 07:06:08,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:08,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:08,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:08,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440272959] [2024-10-13 07:06:08,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440272959] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:08,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250156761] [2024-10-13 07:06:08,253 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:06:08,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:08,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:08,255 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:08,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 07:06:08,318 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:06:08,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:06:08,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 07:06:08,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:06:08,359 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:06:08,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250156761] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:08,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:06:08,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2024-10-13 07:06:08,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563196341] [2024-10-13 07:06:08,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:08,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:06:08,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:08,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:06:08,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:06:08,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:08,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 116 transitions, 1087 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:08,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:08,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:08,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:09,560 INFO L124 PetriNetUnfolderBase]: 13009/18275 cut-off events. [2024-10-13 07:06:09,560 INFO L125 PetriNetUnfolderBase]: For 42012/42012 co-relation queries the response was YES. [2024-10-13 07:06:09,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54544 conditions, 18275 events. 13009/18275 cut-off events. For 42012/42012 co-relation queries the response was YES. Maximal size of possible extension queue 907. Compared 102339 event pairs, 1631 based on Foata normal form. 2/16481 useless extension candidates. Maximal degree in co-relation 46383. Up to 7204 conditions per place. [2024-10-13 07:06:09,643 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 125 selfloop transitions, 73 changer transitions 1/200 dead transitions. [2024-10-13 07:06:09,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 200 transitions, 1954 flow [2024-10-13 07:06:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:06:09,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:06:09,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-10-13 07:06:09,645 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-10-13 07:06:09,645 INFO L175 Difference]: Start difference. First operand has 97 places, 116 transitions, 1087 flow. Second operand 6 states and 126 transitions. [2024-10-13 07:06:09,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 200 transitions, 1954 flow [2024-10-13 07:06:09,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 200 transitions, 1903 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-13 07:06:09,826 INFO L231 Difference]: Finished difference. Result has 101 places, 142 transitions, 1578 flow [2024-10-13 07:06:09,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1578, PETRI_PLACES=101, PETRI_TRANSITIONS=142} [2024-10-13 07:06:09,826 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 64 predicate places. [2024-10-13 07:06:09,826 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 142 transitions, 1578 flow [2024-10-13 07:06:09,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:09,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:09,827 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:09,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 07:06:10,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:10,028 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)] === [2024-10-13 07:06:10,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:10,028 INFO L85 PathProgramCache]: Analyzing trace with hash 266528114, now seen corresponding path program 1 times [2024-10-13 07:06:10,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:10,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349487186] [2024-10-13 07:06:10,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:10,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:10,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:10,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:10,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349487186] [2024-10-13 07:06:10,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349487186] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:10,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:10,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:06:10,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038514466] [2024-10-13 07:06:10,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:10,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:06:10,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:10,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:06:10,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:06:10,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:10,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 142 transitions, 1578 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:10,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:10,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:10,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:11,207 INFO L124 PetriNetUnfolderBase]: 9206/13342 cut-off events. [2024-10-13 07:06:11,207 INFO L125 PetriNetUnfolderBase]: For 42788/42788 co-relation queries the response was YES. [2024-10-13 07:06:11,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41447 conditions, 13342 events. 9206/13342 cut-off events. For 42788/42788 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 76304 event pairs, 4454 based on Foata normal form. 0/12396 useless extension candidates. Maximal degree in co-relation 35719. Up to 6563 conditions per place. [2024-10-13 07:06:11,264 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 123 selfloop transitions, 17 changer transitions 18/159 dead transitions. [2024-10-13 07:06:11,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 159 transitions, 1734 flow [2024-10-13 07:06:11,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:06:11,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:06:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-10-13 07:06:11,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-10-13 07:06:11,265 INFO L175 Difference]: Start difference. First operand has 101 places, 142 transitions, 1578 flow. Second operand 6 states and 106 transitions. [2024-10-13 07:06:11,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 159 transitions, 1734 flow [2024-10-13 07:06:11,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 159 transitions, 1658 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-10-13 07:06:11,459 INFO L231 Difference]: Finished difference. Result has 104 places, 107 transitions, 1034 flow [2024-10-13 07:06:11,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1034, PETRI_PLACES=104, PETRI_TRANSITIONS=107} [2024-10-13 07:06:11,459 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 67 predicate places. [2024-10-13 07:06:11,459 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 107 transitions, 1034 flow [2024-10-13 07:06:11,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:11,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:11,460 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] [2024-10-13 07:06:11,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 07:06:11,460 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)] === [2024-10-13 07:06:11,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:11,460 INFO L85 PathProgramCache]: Analyzing trace with hash 201310246, now seen corresponding path program 1 times [2024-10-13 07:06:11,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:11,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508208152] [2024-10-13 07:06:11,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:11,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:06:11,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:11,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508208152] [2024-10-13 07:06:11,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508208152] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:11,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:11,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:06:11,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647531240] [2024-10-13 07:06:11,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:11,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:06:11,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:11,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:06:11,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:06:11,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:11,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 107 transitions, 1034 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2024-10-13 07:06:11,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:11,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:11,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:12,422 INFO L124 PetriNetUnfolderBase]: 5982/8573 cut-off events. [2024-10-13 07:06:12,423 INFO L125 PetriNetUnfolderBase]: For 24742/24742 co-relation queries the response was YES. [2024-10-13 07:06:12,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26268 conditions, 8573 events. 5982/8573 cut-off events. For 24742/24742 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 45208 event pairs, 3421 based on Foata normal form. 0/8258 useless extension candidates. Maximal degree in co-relation 26184. Up to 6344 conditions per place. [2024-10-13 07:06:12,476 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 73 selfloop transitions, 2 changer transitions 62/138 dead transitions. [2024-10-13 07:06:12,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 138 transitions, 1367 flow [2024-10-13 07:06:12,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:06:12,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:06:12,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-10-13 07:06:12,477 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-10-13 07:06:12,477 INFO L175 Difference]: Start difference. First operand has 104 places, 107 transitions, 1034 flow. Second operand 6 states and 105 transitions. [2024-10-13 07:06:12,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 138 transitions, 1367 flow [2024-10-13 07:06:12,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 138 transitions, 1301 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-10-13 07:06:12,541 INFO L231 Difference]: Finished difference. Result has 99 places, 76 transitions, 617 flow [2024-10-13 07:06:12,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=617, PETRI_PLACES=99, PETRI_TRANSITIONS=76} [2024-10-13 07:06:12,542 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 62 predicate places. [2024-10-13 07:06:12,542 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 76 transitions, 617 flow [2024-10-13 07:06:12,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2024-10-13 07:06:12,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:12,543 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] [2024-10-13 07:06:12,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 07:06:12,543 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)] === [2024-10-13 07:06:12,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:12,543 INFO L85 PathProgramCache]: Analyzing trace with hash -547912946, now seen corresponding path program 1 times [2024-10-13 07:06:12,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:12,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061516777] [2024-10-13 07:06:12,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:12,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:06:12,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:12,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061516777] [2024-10-13 07:06:12,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061516777] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:12,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:12,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:06:12,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216013827] [2024-10-13 07:06:12,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:12,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:06:12,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:12,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:06:12,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:06:12,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:12,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 76 transitions, 617 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2024-10-13 07:06:12,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:12,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:12,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:13,076 INFO L124 PetriNetUnfolderBase]: 3539/4972 cut-off events. [2024-10-13 07:06:13,076 INFO L125 PetriNetUnfolderBase]: For 11639/11639 co-relation queries the response was YES. [2024-10-13 07:06:13,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14991 conditions, 4972 events. 3539/4972 cut-off events. For 11639/11639 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 23060 event pairs, 1737 based on Foata normal form. 154/5124 useless extension candidates. Maximal degree in co-relation 14957. Up to 3059 conditions per place. [2024-10-13 07:06:13,092 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 47 selfloop transitions, 2 changer transitions 52/102 dead transitions. [2024-10-13 07:06:13,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 102 transitions, 836 flow [2024-10-13 07:06:13,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:06:13,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:06:13,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-10-13 07:06:13,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-10-13 07:06:13,094 INFO L175 Difference]: Start difference. First operand has 99 places, 76 transitions, 617 flow. Second operand 6 states and 101 transitions. [2024-10-13 07:06:13,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 102 transitions, 836 flow [2024-10-13 07:06:13,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 763 flow, removed 25 selfloop flow, removed 14 redundant places. [2024-10-13 07:06:13,122 INFO L231 Difference]: Finished difference. Result has 78 places, 50 transitions, 263 flow [2024-10-13 07:06:13,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=78, PETRI_TRANSITIONS=50} [2024-10-13 07:06:13,122 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 41 predicate places. [2024-10-13 07:06:13,122 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 50 transitions, 263 flow [2024-10-13 07:06:13,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2024-10-13 07:06:13,122 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:13,122 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] [2024-10-13 07:06:13,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 07:06:13,123 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)] === [2024-10-13 07:06:13,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:13,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1287902156, now seen corresponding path program 1 times [2024-10-13 07:06:13,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:13,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104435116] [2024-10-13 07:06:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:13,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:06:13,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:13,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104435116] [2024-10-13 07:06:13,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104435116] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:13,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456320016] [2024-10-13 07:06:13,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:13,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:13,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:13,212 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:13,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 07:06:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:13,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:06:13,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:13,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:06:13,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:06:13,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456320016] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:13,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:06:13,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2024-10-13 07:06:13,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173917754] [2024-10-13 07:06:13,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:13,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:06:13,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:13,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:06:13,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-10-13 07:06:13,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:13,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 50 transitions, 263 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:13,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:13,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:13,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:13,738 INFO L124 PetriNetUnfolderBase]: 3117/4283 cut-off events. [2024-10-13 07:06:13,738 INFO L125 PetriNetUnfolderBase]: For 6731/6731 co-relation queries the response was YES. [2024-10-13 07:06:13,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12460 conditions, 4283 events. 3117/4283 cut-off events. For 6731/6731 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 17869 event pairs, 1432 based on Foata normal form. 154/4205 useless extension candidates. Maximal degree in co-relation 12435. Up to 2238 conditions per place. [2024-10-13 07:06:13,757 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 69 selfloop transitions, 9 changer transitions 0/79 dead transitions. [2024-10-13 07:06:13,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 79 transitions, 561 flow [2024-10-13 07:06:13,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:06:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:06:13,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-10-13 07:06:13,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31785714285714284 [2024-10-13 07:06:13,759 INFO L175 Difference]: Start difference. First operand has 78 places, 50 transitions, 263 flow. Second operand 7 states and 89 transitions. [2024-10-13 07:06:13,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 79 transitions, 561 flow [2024-10-13 07:06:13,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 79 transitions, 489 flow, removed 34 selfloop flow, removed 13 redundant places. [2024-10-13 07:06:13,777 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 256 flow [2024-10-13 07:06:13,778 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=256, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-10-13 07:06:13,778 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2024-10-13 07:06:13,778 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 256 flow [2024-10-13 07:06:13,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:13,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:13,778 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:13,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 07:06:13,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:13,979 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)] === [2024-10-13 07:06:13,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:13,979 INFO L85 PathProgramCache]: Analyzing trace with hash -57540264, now seen corresponding path program 1 times [2024-10-13 07:06:13,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:13,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049554692] [2024-10-13 07:06:13,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:13,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:06:14,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:14,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049554692] [2024-10-13 07:06:14,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049554692] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:14,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:14,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:06:14,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196633497] [2024-10-13 07:06:14,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:14,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:06:14,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:14,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:06:14,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:06:14,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:14,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-10-13 07:06:14,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:14,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:14,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:14,398 INFO L124 PetriNetUnfolderBase]: 3117/4279 cut-off events. [2024-10-13 07:06:14,399 INFO L125 PetriNetUnfolderBase]: For 4126/4126 co-relation queries the response was YES. [2024-10-13 07:06:14,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11997 conditions, 4279 events. 3117/4279 cut-off events. For 4126/4126 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 18172 event pairs, 1309 based on Foata normal form. 2/3856 useless extension candidates. Maximal degree in co-relation 11981. Up to 2752 conditions per place. [2024-10-13 07:06:14,415 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 67 selfloop transitions, 3 changer transitions 26/97 dead transitions. [2024-10-13 07:06:14,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 97 transitions, 625 flow [2024-10-13 07:06:14,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:06:14,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:06:14,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-10-13 07:06:14,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-10-13 07:06:14,416 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 256 flow. Second operand 4 states and 90 transitions. [2024-10-13 07:06:14,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 97 transitions, 625 flow [2024-10-13 07:06:14,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 97 transitions, 612 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 07:06:14,423 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 231 flow [2024-10-13 07:06:14,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-10-13 07:06:14,424 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 20 predicate places. [2024-10-13 07:06:14,424 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 231 flow [2024-10-13 07:06:14,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-10-13 07:06:14,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:14,424 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:14,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 07:06:14,424 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)] === [2024-10-13 07:06:14,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:14,425 INFO L85 PathProgramCache]: Analyzing trace with hash 626686226, now seen corresponding path program 1 times [2024-10-13 07:06:14,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:14,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527748607] [2024-10-13 07:06:14,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:14,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:06:14,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:14,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527748607] [2024-10-13 07:06:14,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527748607] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:14,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571530958] [2024-10-13 07:06:14,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:14,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:14,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:14,702 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:14,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 07:06:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:14,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 07:06:14,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:06:14,941 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:06:15,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:06:15,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571530958] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:06:15,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:06:15,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-13 07:06:15,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627420563] [2024-10-13 07:06:15,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:06:15,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 07:06:15,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:15,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 07:06:15,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-10-13 07:06:15,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:15,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 231 flow. Second operand has 20 states, 20 states have (on average 7.8) internal successors, (156), 20 states have internal predecessors, (156), 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) [2024-10-13 07:06:15,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:15,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:15,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:15,970 INFO L124 PetriNetUnfolderBase]: 6522/8968 cut-off events. [2024-10-13 07:06:15,970 INFO L125 PetriNetUnfolderBase]: For 9969/9969 co-relation queries the response was YES. [2024-10-13 07:06:15,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25301 conditions, 8968 events. 6522/8968 cut-off events. For 9969/9969 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 43136 event pairs, 1463 based on Foata normal form. 1/8029 useless extension candidates. Maximal degree in co-relation 25284. Up to 3471 conditions per place. [2024-10-13 07:06:16,011 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 131 selfloop transitions, 22 changer transitions 1/155 dead transitions. [2024-10-13 07:06:16,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 155 transitions, 957 flow [2024-10-13 07:06:16,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 07:06:16,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 07:06:16,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-10-13 07:06:16,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-10-13 07:06:16,012 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 231 flow. Second operand 12 states and 184 transitions. [2024-10-13 07:06:16,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 155 transitions, 957 flow [2024-10-13 07:06:16,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 155 transitions, 923 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-10-13 07:06:16,028 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 417 flow [2024-10-13 07:06:16,028 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=417, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-10-13 07:06:16,029 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2024-10-13 07:06:16,029 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 417 flow [2024-10-13 07:06:16,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.8) internal successors, (156), 20 states have internal predecessors, (156), 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) [2024-10-13 07:06:16,029 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:16,029 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:16,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-13 07:06:16,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 07:06:16,230 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)] === [2024-10-13 07:06:16,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:16,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1134680602, now seen corresponding path program 2 times [2024-10-13 07:06:16,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:16,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373739261] [2024-10-13 07:06:16,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:16,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:06:16,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:16,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373739261] [2024-10-13 07:06:16,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373739261] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:16,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576645787] [2024-10-13 07:06:16,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:06:16,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:16,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:16,465 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:16,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 07:06:16,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 07:06:16,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:06:16,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 07:06:16,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:16,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:06:16,685 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:06:16,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576645787] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:16,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:06:16,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2024-10-13 07:06:16,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903361990] [2024-10-13 07:06:16,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:16,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:06:16,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:16,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:06:16,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:06:16,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:16,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 417 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:16,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:16,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:16,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:17,425 INFO L124 PetriNetUnfolderBase]: 6522/8966 cut-off events. [2024-10-13 07:06:17,425 INFO L125 PetriNetUnfolderBase]: For 14385/14385 co-relation queries the response was YES. [2024-10-13 07:06:17,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26132 conditions, 8966 events. 6522/8966 cut-off events. For 14385/14385 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 43146 event pairs, 1563 based on Foata normal form. 1/8028 useless extension candidates. Maximal degree in co-relation 26111. Up to 3471 conditions per place. [2024-10-13 07:06:17,457 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 134 selfloop transitions, 20 changer transitions 1/156 dead transitions. [2024-10-13 07:06:17,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 156 transitions, 1070 flow [2024-10-13 07:06:17,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:06:17,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:06:17,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-10-13 07:06:17,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4325 [2024-10-13 07:06:17,458 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 417 flow. Second operand 10 states and 173 transitions. [2024-10-13 07:06:17,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 156 transitions, 1070 flow [2024-10-13 07:06:17,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 156 transitions, 1051 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-13 07:06:17,479 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 531 flow [2024-10-13 07:06:17,479 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=531, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-10-13 07:06:17,479 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 41 predicate places. [2024-10-13 07:06:17,480 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 531 flow [2024-10-13 07:06:17,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:17,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:17,480 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:17,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 07:06:17,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 07:06:17,680 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)] === [2024-10-13 07:06:17,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:17,681 INFO L85 PathProgramCache]: Analyzing trace with hash -548762382, now seen corresponding path program 3 times [2024-10-13 07:06:17,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:17,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238761655] [2024-10-13 07:06:17,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:17,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:06:17,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:17,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238761655] [2024-10-13 07:06:17,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238761655] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:17,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469782162] [2024-10-13 07:06:17,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:06:17,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:17,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:17,942 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:17,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 07:06:18,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-13 07:06:18,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:06:18,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 07:06:18,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:06:18,155 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:06:18,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469782162] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:18,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:06:18,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-10-13 07:06:18,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141444343] [2024-10-13 07:06:18,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:18,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:06:18,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:18,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:06:18,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-13 07:06:18,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:18,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 531 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:18,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:18,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:18,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:18,902 INFO L124 PetriNetUnfolderBase]: 7121/9877 cut-off events. [2024-10-13 07:06:18,903 INFO L125 PetriNetUnfolderBase]: For 21357/21357 co-relation queries the response was YES. [2024-10-13 07:06:18,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29610 conditions, 9877 events. 7121/9877 cut-off events. For 21357/21357 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 49227 event pairs, 1821 based on Foata normal form. 1/8890 useless extension candidates. Maximal degree in co-relation 29586. Up to 3471 conditions per place. [2024-10-13 07:06:18,941 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 143 selfloop transitions, 26 changer transitions 1/171 dead transitions. [2024-10-13 07:06:18,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 171 transitions, 1291 flow [2024-10-13 07:06:18,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:06:18,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:06:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-10-13 07:06:18,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4475 [2024-10-13 07:06:18,942 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 531 flow. Second operand 10 states and 179 transitions. [2024-10-13 07:06:18,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 171 transitions, 1291 flow [2024-10-13 07:06:18,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 171 transitions, 1251 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-10-13 07:06:18,993 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 688 flow [2024-10-13 07:06:18,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=688, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2024-10-13 07:06:18,994 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 49 predicate places. [2024-10-13 07:06:18,994 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 688 flow [2024-10-13 07:06:18,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:18,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:18,994 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:19,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 07:06:19,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 07:06:19,195 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)] === [2024-10-13 07:06:19,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:19,195 INFO L85 PathProgramCache]: Analyzing trace with hash 180881828, now seen corresponding path program 4 times [2024-10-13 07:06:19,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:19,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809931991] [2024-10-13 07:06:19,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:19,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:19,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:06:19,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:19,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809931991] [2024-10-13 07:06:19,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809931991] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:19,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119591764] [2024-10-13 07:06:19,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:06:19,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:19,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:19,436 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:19,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 07:06:19,509 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:06:19,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:06:19,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 07:06:19,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:19,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:06:19,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:06:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:06:19,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119591764] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:19,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:06:19,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 7] total 19 [2024-10-13 07:06:19,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233298763] [2024-10-13 07:06:19,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:19,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:06:19,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:19,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:06:19,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-10-13 07:06:19,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:19,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 688 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-10-13 07:06:19,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:19,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:19,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:21,393 INFO L124 PetriNetUnfolderBase]: 15416/21930 cut-off events. [2024-10-13 07:06:21,393 INFO L125 PetriNetUnfolderBase]: For 49991/49991 co-relation queries the response was YES. [2024-10-13 07:06:21,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63245 conditions, 21930 events. 15416/21930 cut-off events. For 49991/49991 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 129880 event pairs, 1402 based on Foata normal form. 2/19390 useless extension candidates. Maximal degree in co-relation 63217. Up to 7202 conditions per place. [2024-10-13 07:06:21,543 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 182 selfloop transitions, 90 changer transitions 3/276 dead transitions. [2024-10-13 07:06:21,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 276 transitions, 2586 flow [2024-10-13 07:06:21,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:06:21,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:06:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-10-13 07:06:21,545 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49318181818181817 [2024-10-13 07:06:21,545 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 688 flow. Second operand 11 states and 217 transitions. [2024-10-13 07:06:21,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 276 transitions, 2586 flow [2024-10-13 07:06:21,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 276 transitions, 2480 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-10-13 07:06:21,680 INFO L231 Difference]: Finished difference. Result has 100 places, 154 transitions, 1865 flow [2024-10-13 07:06:21,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1865, PETRI_PLACES=100, PETRI_TRANSITIONS=154} [2024-10-13 07:06:21,681 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 63 predicate places. [2024-10-13 07:06:21,681 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 154 transitions, 1865 flow [2024-10-13 07:06:21,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-10-13 07:06:21,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:21,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:21,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 07:06:21,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 07:06:21,883 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)] === [2024-10-13 07:06:21,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:21,884 INFO L85 PathProgramCache]: Analyzing trace with hash -259686146, now seen corresponding path program 5 times [2024-10-13 07:06:21,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:21,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833154365] [2024-10-13 07:06:21,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:21,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:06:22,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:22,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833154365] [2024-10-13 07:06:22,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833154365] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:22,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292562814] [2024-10-13 07:06:22,095 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:06:22,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:22,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:22,096 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:22,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 07:06:22,178 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:06:22,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:06:22,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 07:06:22,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:22,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:06:22,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:06:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:06:22,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292562814] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:22,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:06:22,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 7] total 19 [2024-10-13 07:06:22,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955336221] [2024-10-13 07:06:22,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:22,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:06:22,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:22,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:06:22,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-10-13 07:06:22,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:22,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 154 transitions, 1865 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-10-13 07:06:22,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:22,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:22,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:25,653 INFO L124 PetriNetUnfolderBase]: 26875/38469 cut-off events. [2024-10-13 07:06:25,653 INFO L125 PetriNetUnfolderBase]: For 118541/118541 co-relation queries the response was YES. [2024-10-13 07:06:25,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128772 conditions, 38469 events. 26875/38469 cut-off events. For 118541/118541 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 246965 event pairs, 3441 based on Foata normal form. 4/36127 useless extension candidates. Maximal degree in co-relation 128737. Up to 16314 conditions per place. [2024-10-13 07:06:26,303 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 201 selfloop transitions, 205 changer transitions 8/415 dead transitions. [2024-10-13 07:06:26,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 415 transitions, 4937 flow [2024-10-13 07:06:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:06:26,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:06:26,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-10-13 07:06:26,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5068181818181818 [2024-10-13 07:06:26,305 INFO L175 Difference]: Start difference. First operand has 100 places, 154 transitions, 1865 flow. Second operand 11 states and 223 transitions. [2024-10-13 07:06:26,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 415 transitions, 4937 flow [2024-10-13 07:06:27,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 415 transitions, 4771 flow, removed 83 selfloop flow, removed 0 redundant places. [2024-10-13 07:06:27,139 INFO L231 Difference]: Finished difference. Result has 119 places, 274 transitions, 4103 flow [2024-10-13 07:06:27,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4103, PETRI_PLACES=119, PETRI_TRANSITIONS=274} [2024-10-13 07:06:27,140 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 82 predicate places. [2024-10-13 07:06:27,140 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 274 transitions, 4103 flow [2024-10-13 07:06:27,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-10-13 07:06:27,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:27,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:27,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-13 07:06:27,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:27,341 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)] === [2024-10-13 07:06:27,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:27,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1836223824, now seen corresponding path program 6 times [2024-10-13 07:06:27,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:27,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090967220] [2024-10-13 07:06:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:27,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:27,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:06:27,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:27,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090967220] [2024-10-13 07:06:27,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090967220] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:27,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140121863] [2024-10-13 07:06:27,643 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:06:27,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:27,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:27,645 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:27,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 07:06:27,732 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-13 07:06:27,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:06:27,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 07:06:27,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:27,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:06:27,894 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:06:27,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140121863] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:27,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:06:27,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-10-13 07:06:27,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157196640] [2024-10-13 07:06:27,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:27,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:06:27,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:27,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:06:27,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-10-13 07:06:27,897 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:27,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 274 transitions, 4103 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:27,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:27,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:27,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:32,615 INFO L124 PetriNetUnfolderBase]: 28139/40216 cut-off events. [2024-10-13 07:06:32,615 INFO L125 PetriNetUnfolderBase]: For 180494/180494 co-relation queries the response was YES. [2024-10-13 07:06:32,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157121 conditions, 40216 events. 28139/40216 cut-off events. For 180494/180494 co-relation queries the response was YES. Maximal size of possible extension queue 1633. Compared 259667 event pairs, 8220 based on Foata normal form. 6/40221 useless extension candidates. Maximal degree in co-relation 157077. Up to 15519 conditions per place. [2024-10-13 07:06:32,951 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 346 selfloop transitions, 123 changer transitions 2/472 dead transitions. [2024-10-13 07:06:32,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 472 transitions, 6755 flow [2024-10-13 07:06:32,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:06:32,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:06:32,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-10-13 07:06:32,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-10-13 07:06:32,952 INFO L175 Difference]: Start difference. First operand has 119 places, 274 transitions, 4103 flow. Second operand 10 states and 176 transitions. [2024-10-13 07:06:32,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 472 transitions, 6755 flow [2024-10-13 07:06:34,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 472 transitions, 6646 flow, removed 50 selfloop flow, removed 2 redundant places. [2024-10-13 07:06:34,054 INFO L231 Difference]: Finished difference. Result has 129 places, 297 transitions, 4836 flow [2024-10-13 07:06:34,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4024, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4836, PETRI_PLACES=129, PETRI_TRANSITIONS=297} [2024-10-13 07:06:34,054 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 92 predicate places. [2024-10-13 07:06:34,055 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 297 transitions, 4836 flow [2024-10-13 07:06:34,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:34,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:34,055 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:06:34,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-13 07:06:34,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-10-13 07:06:34,255 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)] === [2024-10-13 07:06:34,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:34,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2012363864, now seen corresponding path program 7 times [2024-10-13 07:06:34,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:34,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590867543] [2024-10-13 07:06:34,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:34,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:06:34,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:34,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590867543] [2024-10-13 07:06:34,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590867543] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:34,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487808003] [2024-10-13 07:06:34,457 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:06:34,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:34,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:34,459 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:34,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 07:06:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:34,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 07:06:34,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:06:34,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:06:34,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:06:34,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487808003] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:34,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:06:34,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 21 [2024-10-13 07:06:34,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519560188] [2024-10-13 07:06:34,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:34,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:06:34,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:34,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:06:34,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2024-10-13 07:06:34,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:34,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 297 transitions, 4836 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:34,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:34,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:34,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:39,640 INFO L124 PetriNetUnfolderBase]: 28139/40208 cut-off events. [2024-10-13 07:06:39,640 INFO L125 PetriNetUnfolderBase]: For 207064/207064 co-relation queries the response was YES. [2024-10-13 07:06:39,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160170 conditions, 40208 events. 28139/40208 cut-off events. For 207064/207064 co-relation queries the response was YES. Maximal size of possible extension queue 1614. Compared 257811 event pairs, 7261 based on Foata normal form. 4/40211 useless extension candidates. Maximal degree in co-relation 160123. Up to 15457 conditions per place. [2024-10-13 07:06:40,023 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 349 selfloop transitions, 140 changer transitions 2/492 dead transitions. [2024-10-13 07:06:40,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 492 transitions, 7371 flow [2024-10-13 07:06:40,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:06:40,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:06:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-10-13 07:06:40,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-10-13 07:06:40,024 INFO L175 Difference]: Start difference. First operand has 129 places, 297 transitions, 4836 flow. Second operand 11 states and 185 transitions. [2024-10-13 07:06:40,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 492 transitions, 7371 flow [2024-10-13 07:06:41,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 492 transitions, 7309 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-10-13 07:06:41,302 INFO L231 Difference]: Finished difference. Result has 139 places, 335 transitions, 5950 flow [2024-10-13 07:06:41,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4778, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5950, PETRI_PLACES=139, PETRI_TRANSITIONS=335} [2024-10-13 07:06:41,302 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 102 predicate places. [2024-10-13 07:06:41,302 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 335 transitions, 5950 flow [2024-10-13 07:06:41,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:41,302 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:41,302 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] [2024-10-13 07:06:41,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-13 07:06:41,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:41,503 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:06:41,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:41,503 INFO L85 PathProgramCache]: Analyzing trace with hash 636664416, now seen corresponding path program 1 times [2024-10-13 07:06:41,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:41,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339054358] [2024-10-13 07:06:41,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:41,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:06:41,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:41,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339054358] [2024-10-13 07:06:41,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339054358] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:41,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:41,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:06:41,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751905240] [2024-10-13 07:06:41,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:41,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:06:41,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:41,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:06:41,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:06:41,561 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:41,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 335 transitions, 5950 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:41,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:41,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:41,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:44,888 INFO L124 PetriNetUnfolderBase]: 17828/26039 cut-off events. [2024-10-13 07:06:44,888 INFO L125 PetriNetUnfolderBase]: For 139910/139910 co-relation queries the response was YES. [2024-10-13 07:06:45,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102347 conditions, 26039 events. 17828/26039 cut-off events. For 139910/139910 co-relation queries the response was YES. Maximal size of possible extension queue 1123. Compared 165214 event pairs, 9299 based on Foata normal form. 781/26819 useless extension candidates. Maximal degree in co-relation 102296. Up to 15535 conditions per place. [2024-10-13 07:06:45,125 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 288 selfloop transitions, 20 changer transitions 3/312 dead transitions. [2024-10-13 07:06:45,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 312 transitions, 5117 flow [2024-10-13 07:06:45,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:06:45,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:06:45,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-10-13 07:06:45,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-10-13 07:06:45,126 INFO L175 Difference]: Start difference. First operand has 139 places, 335 transitions, 5950 flow. Second operand 5 states and 96 transitions. [2024-10-13 07:06:45,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 312 transitions, 5117 flow [2024-10-13 07:06:45,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 312 transitions, 4960 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-10-13 07:06:45,901 INFO L231 Difference]: Finished difference. Result has 136 places, 253 transitions, 4014 flow [2024-10-13 07:06:45,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3955, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4014, PETRI_PLACES=136, PETRI_TRANSITIONS=253} [2024-10-13 07:06:45,901 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 99 predicate places. [2024-10-13 07:06:45,901 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 253 transitions, 4014 flow [2024-10-13 07:06:45,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:45,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:45,902 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] [2024-10-13 07:06:45,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-13 07:06:45,902 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:06:45,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:45,902 INFO L85 PathProgramCache]: Analyzing trace with hash 717504228, now seen corresponding path program 1 times [2024-10-13 07:06:45,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:45,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141623662] [2024-10-13 07:06:45,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:45,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:06:45,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:45,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141623662] [2024-10-13 07:06:45,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141623662] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:06:45,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:06:45,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:06:45,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010908969] [2024-10-13 07:06:45,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:45,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:06:45,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:45,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:06:45,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:06:45,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:45,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 253 transitions, 4014 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:45,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:45,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:45,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:48,307 INFO L124 PetriNetUnfolderBase]: 13409/19675 cut-off events. [2024-10-13 07:06:48,307 INFO L125 PetriNetUnfolderBase]: For 96062/96062 co-relation queries the response was YES. [2024-10-13 07:06:48,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75876 conditions, 19675 events. 13409/19675 cut-off events. For 96062/96062 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 120384 event pairs, 7824 based on Foata normal form. 404/20078 useless extension candidates. Maximal degree in co-relation 75826. Up to 15535 conditions per place. [2024-10-13 07:06:48,504 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 157 selfloop transitions, 2 changer transitions 74/234 dead transitions. [2024-10-13 07:06:48,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 234 transitions, 3378 flow [2024-10-13 07:06:48,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:06:48,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:06:48,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-10-13 07:06:48,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-10-13 07:06:48,505 INFO L175 Difference]: Start difference. First operand has 136 places, 253 transitions, 4014 flow. Second operand 5 states and 88 transitions. [2024-10-13 07:06:48,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 234 transitions, 3378 flow [2024-10-13 07:06:49,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 234 transitions, 3100 flow, removed 83 selfloop flow, removed 10 redundant places. [2024-10-13 07:06:49,244 INFO L231 Difference]: Finished difference. Result has 131 places, 160 transitions, 1730 flow [2024-10-13 07:06:49,244 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2363, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1730, PETRI_PLACES=131, PETRI_TRANSITIONS=160} [2024-10-13 07:06:49,244 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 94 predicate places. [2024-10-13 07:06:49,244 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 160 transitions, 1730 flow [2024-10-13 07:06:49,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:06:49,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:49,244 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] [2024-10-13 07:06:49,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-13 07:06:49,245 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:06:49,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:49,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1630893698, now seen corresponding path program 1 times [2024-10-13 07:06:49,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:49,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863996857] [2024-10-13 07:06:49,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:49,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:49,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:06:49,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:49,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863996857] [2024-10-13 07:06:49,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863996857] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:49,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076747189] [2024-10-13 07:06:49,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:49,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:49,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:49,332 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:49,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 07:06:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:49,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:06:49,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:49,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:06:49,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:06:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:06:49,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076747189] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:49,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:06:49,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2024-10-13 07:06:49,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482287234] [2024-10-13 07:06:49,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:49,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:06:49,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:49,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:06:49,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-10-13 07:06:49,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:49,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 160 transitions, 1730 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-10-13 07:06:49,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:49,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:49,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:50,582 INFO L124 PetriNetUnfolderBase]: 7618/10787 cut-off events. [2024-10-13 07:06:50,582 INFO L125 PetriNetUnfolderBase]: For 44484/44484 co-relation queries the response was YES. [2024-10-13 07:06:50,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43292 conditions, 10787 events. 7618/10787 cut-off events. For 44484/44484 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 56254 event pairs, 2981 based on Foata normal form. 450/11236 useless extension candidates. Maximal degree in co-relation 43246. Up to 5462 conditions per place. [2024-10-13 07:06:50,658 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 149 selfloop transitions, 20 changer transitions 0/170 dead transitions. [2024-10-13 07:06:50,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 170 transitions, 2026 flow [2024-10-13 07:06:50,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:06:50,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:06:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-10-13 07:06:50,659 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30357142857142855 [2024-10-13 07:06:50,659 INFO L175 Difference]: Start difference. First operand has 131 places, 160 transitions, 1730 flow. Second operand 7 states and 85 transitions. [2024-10-13 07:06:50,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 170 transitions, 2026 flow [2024-10-13 07:06:50,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 170 transitions, 1852 flow, removed 85 selfloop flow, removed 18 redundant places. [2024-10-13 07:06:50,958 INFO L231 Difference]: Finished difference. Result has 92 places, 129 transitions, 1264 flow [2024-10-13 07:06:50,958 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1264, PETRI_PLACES=92, PETRI_TRANSITIONS=129} [2024-10-13 07:06:50,959 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 55 predicate places. [2024-10-13 07:06:50,959 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 129 transitions, 1264 flow [2024-10-13 07:06:50,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2024-10-13 07:06:50,959 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:50,959 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, 1] [2024-10-13 07:06:50,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-13 07:06:51,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:51,159 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:06:51,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:51,160 INFO L85 PathProgramCache]: Analyzing trace with hash 851361620, now seen corresponding path program 1 times [2024-10-13 07:06:51,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:51,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643018434] [2024-10-13 07:06:51,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:51,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:51,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:06:51,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:51,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643018434] [2024-10-13 07:06:51,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643018434] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:51,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630282452] [2024-10-13 07:06:51,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:51,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:51,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:51,264 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:51,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 07:06:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:51,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:06:51,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:51,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:06:51,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:06:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:06:51,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630282452] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:51,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:06:51,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2024-10-13 07:06:51,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502325150] [2024-10-13 07:06:51,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:06:51,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:06:51,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:06:51,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:06:51,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-10-13 07:06:51,483 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:06:51,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 129 transitions, 1264 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2024-10-13 07:06:51,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:06:51,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:06:51,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:06:52,461 INFO L124 PetriNetUnfolderBase]: 7447/10549 cut-off events. [2024-10-13 07:06:52,462 INFO L125 PetriNetUnfolderBase]: For 34856/34856 co-relation queries the response was YES. [2024-10-13 07:06:52,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40835 conditions, 10549 events. 7447/10549 cut-off events. For 34856/34856 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 53593 event pairs, 2757 based on Foata normal form. 479/11027 useless extension candidates. Maximal degree in co-relation 40805. Up to 5319 conditions per place. [2024-10-13 07:06:52,544 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 134 selfloop transitions, 25 changer transitions 0/160 dead transitions. [2024-10-13 07:06:52,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 160 transitions, 1831 flow [2024-10-13 07:06:52,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:06:52,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:06:52,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-10-13 07:06:52,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29642857142857143 [2024-10-13 07:06:52,546 INFO L175 Difference]: Start difference. First operand has 92 places, 129 transitions, 1264 flow. Second operand 7 states and 83 transitions. [2024-10-13 07:06:52,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 160 transitions, 1831 flow [2024-10-13 07:06:52,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 160 transitions, 1780 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-10-13 07:06:52,646 INFO L231 Difference]: Finished difference. Result has 92 places, 130 transitions, 1324 flow [2024-10-13 07:06:52,646 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1324, PETRI_PLACES=92, PETRI_TRANSITIONS=130} [2024-10-13 07:06:52,647 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 55 predicate places. [2024-10-13 07:06:52,647 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 130 transitions, 1324 flow [2024-10-13 07:06:52,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2024-10-13 07:06:52,647 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:06:52,647 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, 1, 1] [2024-10-13 07:06:52,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-13 07:06:52,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-13 07:06:52,848 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 07:06:52,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:06:52,848 INFO L85 PathProgramCache]: Analyzing trace with hash 246087176, now seen corresponding path program 1 times [2024-10-13 07:06:52,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:06:52,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436935562] [2024-10-13 07:06:52,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:52,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:06:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:53,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:06:53,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:06:53,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436935562] [2024-10-13 07:06:53,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436935562] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:06:53,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191680573] [2024-10-13 07:06:53,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:06:53,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:06:53,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:06:53,617 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:06:53,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-13 07:06:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:06:53,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 07:06:53,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:06:53,971 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2024-10-13 07:06:53,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 36 [2024-10-13 07:06:53,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:06:53,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:07:22,523 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-10-13 07:07:22,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-10-13 07:07:22,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:07:22,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191680573] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:07:22,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:07:22,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 27 [2024-10-13 07:07:22,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895911743] [2024-10-13 07:07:22,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:07:22,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-13 07:07:22,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:07:22,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-13 07:07:22,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=602, Unknown=7, NotChecked=0, Total=702 [2024-10-13 07:07:22,539 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-10-13 07:07:22,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 130 transitions, 1324 flow. Second operand has 27 states, 27 states have (on average 6.888888888888889) internal successors, (186), 27 states have internal predecessors, (186), 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) [2024-10-13 07:07:22,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:07:22,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-10-13 07:07:22,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand