./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-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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-word-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 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:35:43,670 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:35:43,742 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:35:43,747 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:35:43,749 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:35:43,780 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:35:43,781 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:35:43,782 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:35:43,782 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:35:43,782 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:35:43,783 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:35:43,783 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:35:43,784 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:35:43,788 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:35:43,788 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:35:43,788 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:35:43,788 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:35:43,789 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:35:43,789 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:35:43,789 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:35:43,789 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:35:43,790 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:35:43,790 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:35:43,790 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:35:43,791 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:35:43,791 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:35:43,791 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:35:43,794 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:35:43,794 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:35:43,794 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:35:43,794 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:35:43,795 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:35:43,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:35:43,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:35:43,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:35:43,795 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:35:43,796 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:35:43,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:35:43,796 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:35:43,796 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:35:43,796 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:35:43,798 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:35:43,798 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2024-10-14 14:35:44,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:35:44,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:35:44,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:35:44,095 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:35:44,096 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:35:44,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-10-14 14:35:45,514 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:35:45,703 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:35:45,704 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-10-14 14:35:45,713 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9949a0d6/9dc5ea56e8c243afacf90f298ed66c0c/FLAG11f557823 [2024-10-14 14:35:45,727 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9949a0d6/9dc5ea56e8c243afacf90f298ed66c0c [2024-10-14 14:35:45,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:35:45,730 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:35:45,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:35:45,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:35:45,738 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:35:45,739 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:35:45" (1/1) ... [2024-10-14 14:35:45,740 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff16359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:45, skipping insertion in model container [2024-10-14 14:35:45,740 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:35:45" (1/1) ... [2024-10-14 14:35:45,768 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:35:45,947 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-word-subst.wvr.c[3384,3397] [2024-10-14 14:35:45,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:35:45,968 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:35:46,013 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-word-subst.wvr.c[3384,3397] [2024-10-14 14:35:46,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:35:46,036 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:35:46,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:46 WrapperNode [2024-10-14 14:35:46,037 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:35:46,039 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:35:46,039 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:35:46,039 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:35:46,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:46" (1/1) ... [2024-10-14 14:35:46,053 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:46" (1/1) ... [2024-10-14 14:35:46,077 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 169 [2024-10-14 14:35:46,078 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:35:46,078 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:35:46,079 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:35:46,079 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:35:46,090 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:46" (1/1) ... [2024-10-14 14:35:46,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:46" (1/1) ... [2024-10-14 14:35:46,094 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:46" (1/1) ... [2024-10-14 14:35:46,122 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]. [2024-10-14 14:35:46,123 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:46" (1/1) ... [2024-10-14 14:35:46,123 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:46" (1/1) ... [2024-10-14 14:35:46,131 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:46" (1/1) ... [2024-10-14 14:35:46,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:46" (1/1) ... [2024-10-14 14:35:46,141 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:46" (1/1) ... [2024-10-14 14:35:46,143 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:46" (1/1) ... [2024-10-14 14:35:46,147 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:35:46,148 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:35:46,148 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:35:46,148 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:35:46,149 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:46" (1/1) ... [2024-10-14 14:35:46,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:35:46,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:35:46,200 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) [2024-10-14 14:35:46,207 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 [2024-10-14 14:35:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:35:46,266 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 14:35:46,266 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 14:35:46,266 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 14:35:46,266 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 14:35:46,266 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 14:35:46,266 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 14:35:46,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:35:46,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 14:35:46,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 14:35:46,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 14:35:46,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 14:35:46,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:35:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:35:46,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 14:35:46,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 14:35:46,270 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 14:35:46,409 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:35:46,412 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:35:46,856 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:35:46,856 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:35:47,172 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:35:47,172 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-14 14:35:47,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:35:47 BoogieIcfgContainer [2024-10-14 14:35:47,173 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:35:47,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:35:47,177 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:35:47,180 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:35:47,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:35:45" (1/3) ... [2024-10-14 14:35:47,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e24277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:35:47, skipping insertion in model container [2024-10-14 14:35:47,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:46" (2/3) ... [2024-10-14 14:35:47,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e24277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:35:47, skipping insertion in model container [2024-10-14 14:35:47,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:35:47" (3/3) ... [2024-10-14 14:35:47,184 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2024-10-14 14:35:47,200 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:35:47,200 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:35:47,200 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:35:47,259 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 14:35:47,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-10-14 14:35:47,401 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-10-14 14:35:47,402 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 14:35:47,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-10-14 14:35:47,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-10-14 14:35:47,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-10-14 14:35:47,426 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:35:47,435 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;@b2751c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:35:47,436 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 14:35:47,449 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:35:47,450 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-10-14 14:35:47,450 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 14:35:47,450 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:35:47,451 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] [2024-10-14 14:35:47,451 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)] === [2024-10-14 14:35:47,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:35:47,456 INFO L85 PathProgramCache]: Analyzing trace with hash -220026163, now seen corresponding path program 1 times [2024-10-14 14:35:47,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:35:47,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376231286] [2024-10-14 14:35:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:35:47,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:35:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:35:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:35:47,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:35:47,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376231286] [2024-10-14 14:35:47,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376231286] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:35:47,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:35:47,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 14:35:47,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019817030] [2024-10-14 14:35:47,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:35:48,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 14:35:48,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:35:48,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 14:35:48,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 14:35:48,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:35:48,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-10-14 14:35:48,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:35:48,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:35:48,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:35:48,697 INFO L124 PetriNetUnfolderBase]: 3738/4998 cut-off events. [2024-10-14 14:35:48,698 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2024-10-14 14:35:48,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10276 conditions, 4998 events. 3738/4998 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 20524 event pairs, 1692 based on Foata normal form. 1/3664 useless extension candidates. Maximal degree in co-relation 9368. Up to 3459 conditions per place. [2024-10-14 14:35:48,732 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 65 selfloop transitions, 2 changer transitions 5/73 dead transitions. [2024-10-14 14:35:48,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 73 transitions, 323 flow [2024-10-14 14:35:48,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 14:35:48,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 14:35:48,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-10-14 14:35:48,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5782312925170068 [2024-10-14 14:35:48,747 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 85 transitions. [2024-10-14 14:35:48,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 73 transitions, 323 flow [2024-10-14 14:35:48,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 73 transitions, 301 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 14:35:48,768 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 106 flow [2024-10-14 14:35:48,769 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2024-10-14 14:35:48,773 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-10-14 14:35:48,773 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 106 flow [2024-10-14 14:35:48,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-10-14 14:35:48,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:35:48,774 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] [2024-10-14 14:35:48,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:35:48,775 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)] === [2024-10-14 14:35:48,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:35:48,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1290270659, now seen corresponding path program 1 times [2024-10-14 14:35:48,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:35:48,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955335648] [2024-10-14 14:35:48,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:35:48,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:35:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:35:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:35:49,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:35:49,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955335648] [2024-10-14 14:35:49,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955335648] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:35:49,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:35:49,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:35:49,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940881393] [2024-10-14 14:35:49,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:35:49,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:35:49,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:35:49,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:35:49,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:35:49,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:35:49,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-14 14:35:49,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:35:49,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:35:49,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:35:50,427 INFO L124 PetriNetUnfolderBase]: 3507/4756 cut-off events. [2024-10-14 14:35:50,427 INFO L125 PetriNetUnfolderBase]: For 334/334 co-relation queries the response was YES. [2024-10-14 14:35:50,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10209 conditions, 4756 events. 3507/4756 cut-off events. For 334/334 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 20957 event pairs, 377 based on Foata normal form. 1/3751 useless extension candidates. Maximal degree in co-relation 8283. Up to 3012 conditions per place. [2024-10-14 14:35:50,454 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 87 selfloop transitions, 9 changer transitions 14/111 dead transitions. [2024-10-14 14:35:50,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 111 transitions, 485 flow [2024-10-14 14:35:50,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:35:50,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:35:50,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-10-14 14:35:50,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-10-14 14:35:50,458 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 106 flow. Second operand 6 states and 132 transitions. [2024-10-14 14:35:50,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 111 transitions, 485 flow [2024-10-14 14:35:50,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 111 transitions, 475 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-14 14:35:50,480 INFO L231 Difference]: Finished difference. Result has 49 places, 52 transitions, 170 flow [2024-10-14 14:35:50,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=49, PETRI_TRANSITIONS=52} [2024-10-14 14:35:50,482 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-10-14 14:35:50,482 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 170 flow [2024-10-14 14:35:50,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-14 14:35:50,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:35:50,483 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] [2024-10-14 14:35:50,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:35:50,483 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)] === [2024-10-14 14:35:50,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:35:50,484 INFO L85 PathProgramCache]: Analyzing trace with hash 510529653, now seen corresponding path program 2 times [2024-10-14 14:35:50,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:35:50,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727789216] [2024-10-14 14:35:50,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:35:50,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:35:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:35:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:35:51,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:35:51,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727789216] [2024-10-14 14:35:51,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727789216] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:35:51,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:35:51,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:35:51,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359257070] [2024-10-14 14:35:51,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:35:51,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:35:51,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:35:51,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:35:51,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:35:51,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:35:51,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 52 transitions, 170 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) [2024-10-14 14:35:51,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:35:51,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:35:51,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:35:51,699 INFO L124 PetriNetUnfolderBase]: 4215/5817 cut-off events. [2024-10-14 14:35:51,700 INFO L125 PetriNetUnfolderBase]: For 1352/1352 co-relation queries the response was YES. [2024-10-14 14:35:51,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13038 conditions, 5817 events. 4215/5817 cut-off events. For 1352/1352 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 25580 event pairs, 2040 based on Foata normal form. 1/4988 useless extension candidates. Maximal degree in co-relation 13014. Up to 3779 conditions per place. [2024-10-14 14:35:51,733 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 88 selfloop transitions, 3 changer transitions 15/107 dead transitions. [2024-10-14 14:35:51,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 107 transitions, 534 flow [2024-10-14 14:35:51,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:35:51,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:35:51,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-10-14 14:35:51,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47346938775510206 [2024-10-14 14:35:51,738 INFO L175 Difference]: Start difference. First operand has 49 places, 52 transitions, 170 flow. Second operand 5 states and 116 transitions. [2024-10-14 14:35:51,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 107 transitions, 534 flow [2024-10-14 14:35:51,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 107 transitions, 528 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-14 14:35:51,748 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 188 flow [2024-10-14 14:35:51,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2024-10-14 14:35:51,750 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-10-14 14:35:51,750 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 188 flow [2024-10-14 14:35:51,751 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) [2024-10-14 14:35:51,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:35:51,751 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] [2024-10-14 14:35:51,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 14:35:51,751 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)] === [2024-10-14 14:35:51,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:35:51,752 INFO L85 PathProgramCache]: Analyzing trace with hash -574546763, now seen corresponding path program 3 times [2024-10-14 14:35:51,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:35:51,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247715466] [2024-10-14 14:35:51,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:35:51,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:35:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:35:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:35:52,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:35:52,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247715466] [2024-10-14 14:35:52,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247715466] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:35:52,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:35:52,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:35:52,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700466265] [2024-10-14 14:35:52,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:35:52,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:35:52,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:35:52,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:35:52,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:35:52,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:35:52,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 188 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) [2024-10-14 14:35:52,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:35:52,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:35:52,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:35:52,850 INFO L124 PetriNetUnfolderBase]: 4645/6434 cut-off events. [2024-10-14 14:35:52,851 INFO L125 PetriNetUnfolderBase]: For 2951/2951 co-relation queries the response was YES. [2024-10-14 14:35:52,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14892 conditions, 6434 events. 4645/6434 cut-off events. For 2951/2951 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 30979 event pairs, 683 based on Foata normal form. 1/5525 useless extension candidates. Maximal degree in co-relation 14861. Up to 4403 conditions per place. [2024-10-14 14:35:52,885 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 92 selfloop transitions, 3 changer transitions 15/111 dead transitions. [2024-10-14 14:35:52,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 111 transitions, 563 flow [2024-10-14 14:35:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:35:52,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:35:52,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-10-14 14:35:52,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-10-14 14:35:52,889 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 188 flow. Second operand 5 states and 120 transitions. [2024-10-14 14:35:52,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 111 transitions, 563 flow [2024-10-14 14:35:52,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 111 transitions, 552 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-14 14:35:52,914 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 203 flow [2024-10-14 14:35:52,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-10-14 14:35:52,915 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2024-10-14 14:35:52,915 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 203 flow [2024-10-14 14:35:52,916 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) [2024-10-14 14:35:52,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:35:52,916 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] [2024-10-14 14:35:52,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 14:35:52,917 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)] === [2024-10-14 14:35:52,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:35:52,917 INFO L85 PathProgramCache]: Analyzing trace with hash -330068201, now seen corresponding path program 4 times [2024-10-14 14:35:52,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:35:52,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636264018] [2024-10-14 14:35:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:35:52,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:35:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:35:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:35:53,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:35:53,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636264018] [2024-10-14 14:35:53,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636264018] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:35:53,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:35:53,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:35:53,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913782259] [2024-10-14 14:35:53,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:35:53,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:35:53,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:35:53,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:35:53,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:35:53,467 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:35:53,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 203 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-14 14:35:53,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:35:53,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:35:53,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:35:54,290 INFO L124 PetriNetUnfolderBase]: 5270/7359 cut-off events. [2024-10-14 14:35:54,290 INFO L125 PetriNetUnfolderBase]: For 5567/5567 co-relation queries the response was YES. [2024-10-14 14:35:54,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17409 conditions, 7359 events. 5270/7359 cut-off events. For 5567/5567 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 34046 event pairs, 2962 based on Foata normal form. 1/6346 useless extension candidates. Maximal degree in co-relation 17368. Up to 5333 conditions per place. [2024-10-14 14:35:54,324 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 80 selfloop transitions, 11 changer transitions 16/108 dead transitions. [2024-10-14 14:35:54,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 108 transitions, 586 flow [2024-10-14 14:35:54,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:35:54,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:35:54,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-10-14 14:35:54,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-10-14 14:35:54,327 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 203 flow. Second operand 6 states and 124 transitions. [2024-10-14 14:35:54,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 108 transitions, 586 flow [2024-10-14 14:35:54,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 108 transitions, 570 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-14 14:35:54,346 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 242 flow [2024-10-14 14:35:54,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-10-14 14:35:54,347 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-10-14 14:35:54,347 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 242 flow [2024-10-14 14:35:54,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-14 14:35:54,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:35:54,348 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] [2024-10-14 14:35:54,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 14:35:54,348 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)] === [2024-10-14 14:35:54,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:35:54,349 INFO L85 PathProgramCache]: Analyzing trace with hash -458472143, now seen corresponding path program 5 times [2024-10-14 14:35:54,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:35:54,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854795917] [2024-10-14 14:35:54,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:35:54,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:35:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:35:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:35:54,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:35:54,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854795917] [2024-10-14 14:35:54,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854795917] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:35:54,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:35:54,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:35:54,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204569271] [2024-10-14 14:35:54,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:35:54,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:35:54,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:35:54,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:35:54,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:35:54,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:35:54,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 242 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) [2024-10-14 14:35:54,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:35:54,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:35:54,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:35:55,499 INFO L124 PetriNetUnfolderBase]: 5153/7169 cut-off events. [2024-10-14 14:35:55,499 INFO L125 PetriNetUnfolderBase]: For 6533/6533 co-relation queries the response was YES. [2024-10-14 14:35:55,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17299 conditions, 7169 events. 5153/7169 cut-off events. For 6533/6533 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 33292 event pairs, 2769 based on Foata normal form. 1/6164 useless extension candidates. Maximal degree in co-relation 17261. Up to 5151 conditions per place. [2024-10-14 14:35:55,542 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 97 selfloop transitions, 4 changer transitions 14/116 dead transitions. [2024-10-14 14:35:55,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 116 transitions, 635 flow [2024-10-14 14:35:55,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:35:55,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:35:55,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-10-14 14:35:55,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5020408163265306 [2024-10-14 14:35:55,544 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 242 flow. Second operand 5 states and 123 transitions. [2024-10-14 14:35:55,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 116 transitions, 635 flow [2024-10-14 14:35:55,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 116 transitions, 615 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-14 14:35:55,572 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 238 flow [2024-10-14 14:35:55,573 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-10-14 14:35:55,573 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-10-14 14:35:55,574 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 238 flow [2024-10-14 14:35:55,574 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) [2024-10-14 14:35:55,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:35:55,574 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] [2024-10-14 14:35:55,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 14:35:55,575 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)] === [2024-10-14 14:35:55,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:35:55,575 INFO L85 PathProgramCache]: Analyzing trace with hash 871185299, now seen corresponding path program 6 times [2024-10-14 14:35:55,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:35:55,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745089455] [2024-10-14 14:35:55,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:35:55,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:35:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:35:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:35:56,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:35:56,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745089455] [2024-10-14 14:35:56,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745089455] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:35:56,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:35:56,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:35:56,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563168818] [2024-10-14 14:35:56,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:35:56,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:35:56,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:35:56,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:35:56,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:35:56,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:35:56,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 238 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) [2024-10-14 14:35:56,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:35:56,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:35:56,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:35:56,670 INFO L124 PetriNetUnfolderBase]: 5041/7000 cut-off events. [2024-10-14 14:35:56,671 INFO L125 PetriNetUnfolderBase]: For 7038/7038 co-relation queries the response was YES. [2024-10-14 14:35:56,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16863 conditions, 7000 events. 5041/7000 cut-off events. For 7038/7038 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 31621 event pairs, 2870 based on Foata normal form. 1/6003 useless extension candidates. Maximal degree in co-relation 16828. Up to 5338 conditions per place. [2024-10-14 14:35:56,707 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 94 selfloop transitions, 3 changer transitions 14/112 dead transitions. [2024-10-14 14:35:56,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 112 transitions, 613 flow [2024-10-14 14:35:56,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:35:56,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:35:56,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-10-14 14:35:56,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-10-14 14:35:56,709 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 238 flow. Second operand 5 states and 119 transitions. [2024-10-14 14:35:56,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 112 transitions, 613 flow [2024-10-14 14:35:56,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 112 transitions, 602 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-14 14:35:56,734 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 240 flow [2024-10-14 14:35:56,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-10-14 14:35:56,735 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2024-10-14 14:35:56,735 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 240 flow [2024-10-14 14:35:56,735 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) [2024-10-14 14:35:56,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:35:56,735 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] [2024-10-14 14:35:56,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 14:35:56,736 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)] === [2024-10-14 14:35:56,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:35:56,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2016084104, now seen corresponding path program 1 times [2024-10-14 14:35:56,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:35:56,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966721402] [2024-10-14 14:35:56,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:35:56,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:35:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:35:56,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:35:56,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:35:56,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966721402] [2024-10-14 14:35:56,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966721402] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:35:56,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:35:56,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:35:56,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58313273] [2024-10-14 14:35:56,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:35:56,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:35:56,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:35:56,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:35:56,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:35:56,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:35:56,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:35:56,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:35:56,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:35:56,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:35:57,530 INFO L124 PetriNetUnfolderBase]: 6044/8410 cut-off events. [2024-10-14 14:35:57,532 INFO L125 PetriNetUnfolderBase]: For 9162/9162 co-relation queries the response was YES. [2024-10-14 14:35:57,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20007 conditions, 8410 events. 6044/8410 cut-off events. For 9162/9162 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 40729 event pairs, 477 based on Foata normal form. 66/7236 useless extension candidates. Maximal degree in co-relation 19964. Up to 5299 conditions per place. [2024-10-14 14:35:57,632 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 94 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2024-10-14 14:35:57,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 101 transitions, 582 flow [2024-10-14 14:35:57,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:35:57,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:35:57,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-10-14 14:35:57,634 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-10-14 14:35:57,634 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 240 flow. Second operand 4 states and 105 transitions. [2024-10-14 14:35:57,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 101 transitions, 582 flow [2024-10-14 14:35:57,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 101 transitions, 573 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-14 14:35:57,654 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 296 flow [2024-10-14 14:35:57,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-10-14 14:35:57,657 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-10-14 14:35:57,658 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 296 flow [2024-10-14 14:35:57,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:35:57,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:35:57,658 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] [2024-10-14 14:35:57,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 14:35:57,659 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)] === [2024-10-14 14:35:57,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:35:57,661 INFO L85 PathProgramCache]: Analyzing trace with hash 895690072, now seen corresponding path program 2 times [2024-10-14 14:35:57,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:35:57,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000295456] [2024-10-14 14:35:57,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:35:57,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:35:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:35:57,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:35:57,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:35:57,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000295456] [2024-10-14 14:35:57,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000295456] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:35:57,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:35:57,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:35:57,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847839053] [2024-10-14 14:35:57,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:35:57,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:35:57,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:35:57,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:35:57,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:35:57,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:35:57,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:35:57,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:35:57,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:35:57,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:35:58,341 INFO L124 PetriNetUnfolderBase]: 5676/7907 cut-off events. [2024-10-14 14:35:58,342 INFO L125 PetriNetUnfolderBase]: For 8509/8509 co-relation queries the response was YES. [2024-10-14 14:35:58,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19576 conditions, 7907 events. 5676/7907 cut-off events. For 8509/8509 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 37476 event pairs, 637 based on Foata normal form. 66/6805 useless extension candidates. Maximal degree in co-relation 19511. Up to 4823 conditions per place. [2024-10-14 14:35:58,378 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 99 selfloop transitions, 8 changer transitions 0/108 dead transitions. [2024-10-14 14:35:58,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 108 transitions, 688 flow [2024-10-14 14:35:58,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:35:58,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:35:58,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-10-14 14:35:58,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-10-14 14:35:58,380 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 296 flow. Second operand 4 states and 105 transitions. [2024-10-14 14:35:58,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 108 transitions, 688 flow [2024-10-14 14:35:58,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 108 transitions, 688 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 14:35:58,403 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 385 flow [2024-10-14 14:35:58,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2024-10-14 14:35:58,405 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2024-10-14 14:35:58,405 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 385 flow [2024-10-14 14:35:58,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:35:58,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:35:58,406 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] [2024-10-14 14:35:58,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 14:35:58,406 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)] === [2024-10-14 14:35:58,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:35:58,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1223396110, now seen corresponding path program 3 times [2024-10-14 14:35:58,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:35:58,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107367066] [2024-10-14 14:35:58,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:35:58,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:35:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:35:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:35:58,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:35:58,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107367066] [2024-10-14 14:35:58,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107367066] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:35:58,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:35:58,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:35:58,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074001110] [2024-10-14 14:35:58,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:35:58,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:35:58,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:35:58,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:35:58,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:35:58,493 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:35:58,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:35:58,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:35:58,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:35:58,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:35:59,098 INFO L124 PetriNetUnfolderBase]: 5348/7444 cut-off events. [2024-10-14 14:35:59,098 INFO L125 PetriNetUnfolderBase]: For 10280/10280 co-relation queries the response was YES. [2024-10-14 14:35:59,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19373 conditions, 7444 events. 5348/7444 cut-off events. For 10280/10280 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 35152 event pairs, 1270 based on Foata normal form. 26/6374 useless extension candidates. Maximal degree in co-relation 19305. Up to 5180 conditions per place. [2024-10-14 14:35:59,141 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 99 selfloop transitions, 11 changer transitions 2/113 dead transitions. [2024-10-14 14:35:59,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 113 transitions, 742 flow [2024-10-14 14:35:59,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:35:59,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:35:59,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-10-14 14:35:59,143 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4775510204081633 [2024-10-14 14:35:59,143 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 385 flow. Second operand 5 states and 117 transitions. [2024-10-14 14:35:59,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 113 transitions, 742 flow [2024-10-14 14:35:59,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 113 transitions, 740 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-14 14:35:59,172 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 415 flow [2024-10-14 14:35:59,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=415, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-10-14 14:35:59,174 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-10-14 14:35:59,174 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 415 flow [2024-10-14 14:35:59,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:35:59,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:35:59,176 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] [2024-10-14 14:35:59,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 14:35:59,177 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)] === [2024-10-14 14:35:59,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:35:59,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1591909984, now seen corresponding path program 1 times [2024-10-14 14:35:59,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:35:59,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629493111] [2024-10-14 14:35:59,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:35:59,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:35:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:35:59,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:35:59,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:35:59,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629493111] [2024-10-14 14:35:59,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629493111] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:35:59,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:35:59,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:35:59,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006677525] [2024-10-14 14:35:59,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:35:59,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:35:59,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:35:59,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:35:59,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:35:59,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:35:59,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:35:59,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:35:59,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:35:59,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:35:59,918 INFO L124 PetriNetUnfolderBase]: 6218/8668 cut-off events. [2024-10-14 14:35:59,918 INFO L125 PetriNetUnfolderBase]: For 13282/13282 co-relation queries the response was YES. [2024-10-14 14:35:59,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22214 conditions, 8668 events. 6218/8668 cut-off events. For 13282/13282 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 42392 event pairs, 982 based on Foata normal form. 65/7425 useless extension candidates. Maximal degree in co-relation 22144. Up to 5977 conditions per place. [2024-10-14 14:35:59,979 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 97 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2024-10-14 14:35:59,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 108 transitions, 754 flow [2024-10-14 14:35:59,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:35:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:35:59,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-10-14 14:35:59,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-10-14 14:35:59,983 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 415 flow. Second operand 4 states and 104 transitions. [2024-10-14 14:35:59,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 108 transitions, 754 flow [2024-10-14 14:36:00,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 108 transitions, 719 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-14 14:36:00,039 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 444 flow [2024-10-14 14:36:00,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=444, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-10-14 14:36:00,041 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-10-14 14:36:00,041 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 444 flow [2024-10-14 14:36:00,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:36:00,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:00,041 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] [2024-10-14 14:36:00,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 14:36:00,042 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)] === [2024-10-14 14:36:00,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:00,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1076861620, now seen corresponding path program 2 times [2024-10-14 14:36:00,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:00,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720509815] [2024-10-14 14:36:00,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:00,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:00,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:00,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:00,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720509815] [2024-10-14 14:36:00,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720509815] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:00,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:00,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:36:00,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967882203] [2024-10-14 14:36:00,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:00,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:36:00,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:00,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:36:00,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:36:00,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:36:00,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:36:00,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:00,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:36:00,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:00,823 INFO L124 PetriNetUnfolderBase]: 5884/8196 cut-off events. [2024-10-14 14:36:00,823 INFO L125 PetriNetUnfolderBase]: For 10758/10758 co-relation queries the response was YES. [2024-10-14 14:36:00,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21569 conditions, 8196 events. 5884/8196 cut-off events. For 10758/10758 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 39474 event pairs, 1560 based on Foata normal form. 27/6989 useless extension candidates. Maximal degree in co-relation 21501. Up to 5822 conditions per place. [2024-10-14 14:36:00,867 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 105 selfloop transitions, 11 changer transitions 3/120 dead transitions. [2024-10-14 14:36:00,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 120 transitions, 825 flow [2024-10-14 14:36:00,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:36:00,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:36:00,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-10-14 14:36:00,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-10-14 14:36:00,869 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 444 flow. Second operand 5 states and 120 transitions. [2024-10-14 14:36:00,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 120 transitions, 825 flow [2024-10-14 14:36:00,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 120 transitions, 807 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-14 14:36:00,900 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 478 flow [2024-10-14 14:36:00,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=478, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2024-10-14 14:36:00,902 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-10-14 14:36:00,902 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 478 flow [2024-10-14 14:36:00,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:36:00,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:00,903 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] [2024-10-14 14:36:00,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 14:36:00,903 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)] === [2024-10-14 14:36:00,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:00,903 INFO L85 PathProgramCache]: Analyzing trace with hash 542634404, now seen corresponding path program 3 times [2024-10-14 14:36:00,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:00,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118233901] [2024-10-14 14:36:00,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:00,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:00,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:00,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118233901] [2024-10-14 14:36:00,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118233901] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:00,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:00,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:36:00,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159383832] [2024-10-14 14:36:00,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:00,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:36:00,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:00,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:36:00,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:36:00,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:36:00,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:36:00,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:00,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:36:00,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:01,557 INFO L124 PetriNetUnfolderBase]: 5222/7261 cut-off events. [2024-10-14 14:36:01,558 INFO L125 PetriNetUnfolderBase]: For 12533/12533 co-relation queries the response was YES. [2024-10-14 14:36:01,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19390 conditions, 7261 events. 5222/7261 cut-off events. For 12533/12533 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 33784 event pairs, 2384 based on Foata normal form. 53/6226 useless extension candidates. Maximal degree in co-relation 19321. Up to 4857 conditions per place. [2024-10-14 14:36:01,611 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 118 selfloop transitions, 7 changer transitions 6/132 dead transitions. [2024-10-14 14:36:01,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 132 transitions, 882 flow [2024-10-14 14:36:01,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:36:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:36:01,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-10-14 14:36:01,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-10-14 14:36:01,612 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 478 flow. Second operand 5 states and 128 transitions. [2024-10-14 14:36:01,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 132 transitions, 882 flow [2024-10-14 14:36:01,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 132 transitions, 868 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-14 14:36:01,647 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 443 flow [2024-10-14 14:36:01,648 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=443, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2024-10-14 14:36:01,649 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-10-14 14:36:01,649 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 443 flow [2024-10-14 14:36:01,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:36:01,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:01,649 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] [2024-10-14 14:36:01,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 14:36:01,650 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)] === [2024-10-14 14:36:01,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:01,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1097262630, now seen corresponding path program 4 times [2024-10-14 14:36:01,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:01,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656549785] [2024-10-14 14:36:01,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:01,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:01,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:01,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:01,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656549785] [2024-10-14 14:36:01,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656549785] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:01,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:01,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:36:01,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627115506] [2024-10-14 14:36:01,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:01,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:36:01,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:01,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:36:01,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:36:01,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:36:01,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:36:01,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:01,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:36:01,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:02,216 INFO L124 PetriNetUnfolderBase]: 4621/6392 cut-off events. [2024-10-14 14:36:02,216 INFO L125 PetriNetUnfolderBase]: For 11663/11663 co-relation queries the response was YES. [2024-10-14 14:36:02,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16924 conditions, 6392 events. 4621/6392 cut-off events. For 11663/11663 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 28377 event pairs, 1094 based on Foata normal form. 65/5463 useless extension candidates. Maximal degree in co-relation 16854. Up to 5031 conditions per place. [2024-10-14 14:36:02,252 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 91 selfloop transitions, 10 changer transitions 2/104 dead transitions. [2024-10-14 14:36:02,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 104 transitions, 735 flow [2024-10-14 14:36:02,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:36:02,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:36:02,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-10-14 14:36:02,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-10-14 14:36:02,255 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 443 flow. Second operand 4 states and 100 transitions. [2024-10-14 14:36:02,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 104 transitions, 735 flow [2024-10-14 14:36:02,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 104 transitions, 709 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-10-14 14:36:02,284 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 421 flow [2024-10-14 14:36:02,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=421, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-10-14 14:36:02,285 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-10-14 14:36:02,285 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 421 flow [2024-10-14 14:36:02,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:36:02,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:02,285 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] [2024-10-14 14:36:02,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 14:36:02,286 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)] === [2024-10-14 14:36:02,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:02,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1650530228, now seen corresponding path program 5 times [2024-10-14 14:36:02,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:02,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987354309] [2024-10-14 14:36:02,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:02,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:02,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:02,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:02,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987354309] [2024-10-14 14:36:02,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987354309] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:02,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:02,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:36:02,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891599203] [2024-10-14 14:36:02,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:02,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:36:02,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:02,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:36:02,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:36:02,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:36:02,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 421 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:36:02,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:02,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:36:02,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:02,831 INFO L124 PetriNetUnfolderBase]: 4526/6259 cut-off events. [2024-10-14 14:36:02,831 INFO L125 PetriNetUnfolderBase]: For 8040/8040 co-relation queries the response was YES. [2024-10-14 14:36:02,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16345 conditions, 6259 events. 4526/6259 cut-off events. For 8040/8040 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 28018 event pairs, 2710 based on Foata normal form. 20/5281 useless extension candidates. Maximal degree in co-relation 16277. Up to 5489 conditions per place. [2024-10-14 14:36:02,870 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 84 selfloop transitions, 1 changer transitions 14/100 dead transitions. [2024-10-14 14:36:02,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 100 transitions, 693 flow [2024-10-14 14:36:02,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:36:02,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:36:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-10-14 14:36:02,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4744897959183674 [2024-10-14 14:36:02,872 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 421 flow. Second operand 4 states and 93 transitions. [2024-10-14 14:36:02,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 100 transitions, 693 flow [2024-10-14 14:36:02,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 100 transitions, 665 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-14 14:36:02,900 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 379 flow [2024-10-14 14:36:02,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=379, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2024-10-14 14:36:02,901 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-10-14 14:36:02,901 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 379 flow [2024-10-14 14:36:02,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:36:02,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:02,902 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] [2024-10-14 14:36:02,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 14:36:02,902 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)] === [2024-10-14 14:36:02,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:02,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1814186152, now seen corresponding path program 4 times [2024-10-14 14:36:02,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:02,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334164598] [2024-10-14 14:36:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:02,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:02,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:02,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:02,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334164598] [2024-10-14 14:36:02,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334164598] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:02,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:02,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:36:02,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007605619] [2024-10-14 14:36:02,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:02,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:36:02,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:02,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:36:02,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:36:02,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:36:02,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 379 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:36:02,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:02,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:36:02,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:03,440 INFO L124 PetriNetUnfolderBase]: 4155/5726 cut-off events. [2024-10-14 14:36:03,440 INFO L125 PetriNetUnfolderBase]: For 5951/5951 co-relation queries the response was YES. [2024-10-14 14:36:03,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14685 conditions, 5726 events. 4155/5726 cut-off events. For 5951/5951 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 24769 event pairs, 884 based on Foata normal form. 40/4842 useless extension candidates. Maximal degree in co-relation 14668. Up to 5120 conditions per place. [2024-10-14 14:36:03,472 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 72 selfloop transitions, 5 changer transitions 16/94 dead transitions. [2024-10-14 14:36:03,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 94 transitions, 611 flow [2024-10-14 14:36:03,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:36:03,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:36:03,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-10-14 14:36:03,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-10-14 14:36:03,473 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 379 flow. Second operand 4 states and 92 transitions. [2024-10-14 14:36:03,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 94 transitions, 611 flow [2024-10-14 14:36:03,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 94 transitions, 610 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 14:36:03,488 INFO L231 Difference]: Finished difference. Result has 83 places, 63 transitions, 348 flow [2024-10-14 14:36:03,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=348, PETRI_PLACES=83, PETRI_TRANSITIONS=63} [2024-10-14 14:36:03,489 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-10-14 14:36:03,489 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 63 transitions, 348 flow [2024-10-14 14:36:03,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:36:03,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:03,489 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] [2024-10-14 14:36:03,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 14:36:03,490 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)] === [2024-10-14 14:36:03,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:03,491 INFO L85 PathProgramCache]: Analyzing trace with hash -70028716, now seen corresponding path program 5 times [2024-10-14 14:36:03,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:03,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45082924] [2024-10-14 14:36:03,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:03,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:03,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:03,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45082924] [2024-10-14 14:36:03,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45082924] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:03,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:03,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:36:03,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812737102] [2024-10-14 14:36:03,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:03,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:36:03,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:03,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:36:03,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:36:03,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:36:03,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 63 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:36:03,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:03,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:36:03,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:03,952 INFO L124 PetriNetUnfolderBase]: 3657/5013 cut-off events. [2024-10-14 14:36:03,952 INFO L125 PetriNetUnfolderBase]: For 5007/5007 co-relation queries the response was YES. [2024-10-14 14:36:03,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12913 conditions, 5013 events. 3657/5013 cut-off events. For 5007/5007 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 20960 event pairs, 2319 based on Foata normal form. 20/4213 useless extension candidates. Maximal degree in co-relation 12895. Up to 4857 conditions per place. [2024-10-14 14:36:03,972 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 59 selfloop transitions, 0 changer transitions 15/75 dead transitions. [2024-10-14 14:36:03,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 75 transitions, 501 flow [2024-10-14 14:36:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:36:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:36:03,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-10-14 14:36:03,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37244897959183676 [2024-10-14 14:36:03,974 INFO L175 Difference]: Start difference. First operand has 83 places, 63 transitions, 348 flow. Second operand 4 states and 73 transitions. [2024-10-14 14:36:03,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 75 transitions, 501 flow [2024-10-14 14:36:03,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 75 transitions, 485 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-14 14:36:03,982 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 292 flow [2024-10-14 14:36:03,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2024-10-14 14:36:03,982 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-10-14 14:36:03,982 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 292 flow [2024-10-14 14:36:03,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2024-10-14 14:36:03,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:03,983 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:36:03,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 14:36:03,983 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)] === [2024-10-14 14:36:03,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:03,984 INFO L85 PathProgramCache]: Analyzing trace with hash 295309173, now seen corresponding path program 1 times [2024-10-14 14:36:03,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:03,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75517744] [2024-10-14 14:36:03,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:03,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:04,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:04,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75517744] [2024-10-14 14:36:04,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75517744] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:04,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:04,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 14:36:04,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065525027] [2024-10-14 14:36:04,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:04,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:36:04,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:04,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:36:04,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-14 14:36:04,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:36:04,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 292 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:04,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:04,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:36:04,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:05,415 INFO L124 PetriNetUnfolderBase]: 7769/10596 cut-off events. [2024-10-14 14:36:05,415 INFO L125 PetriNetUnfolderBase]: For 5924/5924 co-relation queries the response was YES. [2024-10-14 14:36:05,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27123 conditions, 10596 events. 7769/10596 cut-off events. For 5924/5924 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 49907 event pairs, 3549 based on Foata normal form. 1/8892 useless extension candidates. Maximal degree in co-relation 27109. Up to 4524 conditions per place. [2024-10-14 14:36:05,470 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 127 selfloop transitions, 13 changer transitions 1/142 dead transitions. [2024-10-14 14:36:05,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 142 transitions, 950 flow [2024-10-14 14:36:05,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 14:36:05,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 14:36:05,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-10-14 14:36:05,471 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3935860058309038 [2024-10-14 14:36:05,471 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 292 flow. Second operand 7 states and 135 transitions. [2024-10-14 14:36:05,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 142 transitions, 950 flow [2024-10-14 14:36:05,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 142 transitions, 934 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-14 14:36:05,486 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 377 flow [2024-10-14 14:36:05,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=377, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2024-10-14 14:36:05,486 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2024-10-14 14:36:05,487 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 377 flow [2024-10-14 14:36:05,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:05,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:05,487 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] [2024-10-14 14:36:05,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-14 14:36:05,487 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)] === [2024-10-14 14:36:05,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:05,488 INFO L85 PathProgramCache]: Analyzing trace with hash 501131277, now seen corresponding path program 1 times [2024-10-14 14:36:05,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:05,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000412463] [2024-10-14 14:36:05,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:05,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:05,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:05,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000412463] [2024-10-14 14:36:05,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000412463] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:05,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420932575] [2024-10-14 14:36:05,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:05,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:05,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:05,669 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) [2024-10-14 14:36:05,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 14:36:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:05,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 14:36:05,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:06,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:36:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:08,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420932575] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:08,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 14:36:08,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 12] total 25 [2024-10-14 14:36:08,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280471245] [2024-10-14 14:36:08,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:08,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:36:08,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:08,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:36:08,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2024-10-14 14:36:08,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:36:08,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 377 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:08,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:08,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:36:08,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:11,551 INFO L124 PetriNetUnfolderBase]: 18352/25476 cut-off events. [2024-10-14 14:36:11,551 INFO L125 PetriNetUnfolderBase]: For 14966/14966 co-relation queries the response was YES. [2024-10-14 14:36:11,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70100 conditions, 25476 events. 18352/25476 cut-off events. For 14966/14966 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 144223 event pairs, 1719 based on Foata normal form. 1/23063 useless extension candidates. Maximal degree in co-relation 70083. Up to 6062 conditions per place. [2024-10-14 14:36:11,704 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 327 selfloop transitions, 76 changer transitions 9/413 dead transitions. [2024-10-14 14:36:11,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 413 transitions, 2724 flow [2024-10-14 14:36:11,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 14:36:11,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-14 14:36:11,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 339 transitions. [2024-10-14 14:36:11,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49416909620991256 [2024-10-14 14:36:11,706 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 377 flow. Second operand 14 states and 339 transitions. [2024-10-14 14:36:11,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 413 transitions, 2724 flow [2024-10-14 14:36:11,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 413 transitions, 2714 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-10-14 14:36:11,750 INFO L231 Difference]: Finished difference. Result has 98 places, 154 transitions, 1053 flow [2024-10-14 14:36:11,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1053, PETRI_PLACES=98, PETRI_TRANSITIONS=154} [2024-10-14 14:36:11,750 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2024-10-14 14:36:11,750 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 154 transitions, 1053 flow [2024-10-14 14:36:11,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:11,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:11,751 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] [2024-10-14 14:36:11,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 14:36:11,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:11,955 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)] === [2024-10-14 14:36:11,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:11,955 INFO L85 PathProgramCache]: Analyzing trace with hash 79263759, now seen corresponding path program 2 times [2024-10-14 14:36:11,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:11,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089605830] [2024-10-14 14:36:11,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:11,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:12,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:12,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089605830] [2024-10-14 14:36:12,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089605830] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:12,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486870656] [2024-10-14 14:36:12,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 14:36:12,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:12,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:12,153 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) [2024-10-14 14:36:12,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 14:36:12,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 14:36:12,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:36:12,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-14 14:36:12,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:12,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:12,677 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 14:36:12,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486870656] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:12,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 14:36:12,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 17 [2024-10-14 14:36:12,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110090086] [2024-10-14 14:36:12,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:12,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 14:36:12,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:12,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 14:36:12,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-10-14 14:36:12,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:36:12,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 154 transitions, 1053 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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) [2024-10-14 14:36:12,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:12,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:36:12,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:17,211 INFO L124 PetriNetUnfolderBase]: 35282/48049 cut-off events. [2024-10-14 14:36:17,212 INFO L125 PetriNetUnfolderBase]: For 89062/89062 co-relation queries the response was YES. [2024-10-14 14:36:17,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167532 conditions, 48049 events. 35282/48049 cut-off events. For 89062/89062 co-relation queries the response was YES. Maximal size of possible extension queue 1814. Compared 283332 event pairs, 3536 based on Foata normal form. 1/43018 useless extension candidates. Maximal degree in co-relation 167505. Up to 15222 conditions per place. [2024-10-14 14:36:17,598 INFO L140 encePairwiseOnDemand]: 33/49 looper letters, 357 selfloop transitions, 249 changer transitions 2/609 dead transitions. [2024-10-14 14:36:17,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 609 transitions, 5189 flow [2024-10-14 14:36:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 14:36:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-14 14:36:17,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 322 transitions. [2024-10-14 14:36:17,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2024-10-14 14:36:17,600 INFO L175 Difference]: Start difference. First operand has 98 places, 154 transitions, 1053 flow. Second operand 15 states and 322 transitions. [2024-10-14 14:36:17,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 609 transitions, 5189 flow [2024-10-14 14:36:18,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 609 transitions, 5119 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-10-14 14:36:18,337 INFO L231 Difference]: Finished difference. Result has 119 places, 347 transitions, 3323 flow [2024-10-14 14:36:18,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3323, PETRI_PLACES=119, PETRI_TRANSITIONS=347} [2024-10-14 14:36:18,338 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 76 predicate places. [2024-10-14 14:36:18,338 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 347 transitions, 3323 flow [2024-10-14 14:36:18,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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) [2024-10-14 14:36:18,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:18,339 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] [2024-10-14 14:36:18,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 14:36:18,539 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,SelfDestructingSolverStorable19 [2024-10-14 14:36:18,540 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)] === [2024-10-14 14:36:18,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:18,540 INFO L85 PathProgramCache]: Analyzing trace with hash -500687249, now seen corresponding path program 3 times [2024-10-14 14:36:18,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:18,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897305249] [2024-10-14 14:36:18,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:18,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:18,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:18,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:18,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897305249] [2024-10-14 14:36:18,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897305249] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:18,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887341946] [2024-10-14 14:36:18,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 14:36:18,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:18,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:18,731 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) [2024-10-14 14:36:18,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 14:36:18,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-14 14:36:18,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:36:18,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-14 14:36:18,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:19,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:19,187 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 14:36:19,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887341946] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:19,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 14:36:19,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 17 [2024-10-14 14:36:19,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087961855] [2024-10-14 14:36:19,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:19,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 14:36:19,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:19,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 14:36:19,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-10-14 14:36:19,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:36:19,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 347 transitions, 3323 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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) [2024-10-14 14:36:19,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:19,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:36:19,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:24,442 INFO L124 PetriNetUnfolderBase]: 35528/48451 cut-off events. [2024-10-14 14:36:24,443 INFO L125 PetriNetUnfolderBase]: For 129718/129718 co-relation queries the response was YES. [2024-10-14 14:36:24,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187819 conditions, 48451 events. 35528/48451 cut-off events. For 129718/129718 co-relation queries the response was YES. Maximal size of possible extension queue 1793. Compared 285651 event pairs, 3760 based on Foata normal form. 1/43399 useless extension candidates. Maximal degree in co-relation 187783. Up to 15602 conditions per place. [2024-10-14 14:36:24,913 INFO L140 encePairwiseOnDemand]: 33/49 looper letters, 352 selfloop transitions, 285 changer transitions 4/642 dead transitions. [2024-10-14 14:36:24,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 642 transitions, 6516 flow [2024-10-14 14:36:24,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 14:36:24,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-14 14:36:24,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 351 transitions. [2024-10-14 14:36:24,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42136854741896757 [2024-10-14 14:36:24,915 INFO L175 Difference]: Start difference. First operand has 119 places, 347 transitions, 3323 flow. Second operand 17 states and 351 transitions. [2024-10-14 14:36:24,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 642 transitions, 6516 flow [2024-10-14 14:36:26,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 642 transitions, 6408 flow, removed 54 selfloop flow, removed 0 redundant places. [2024-10-14 14:36:26,085 INFO L231 Difference]: Finished difference. Result has 142 places, 396 transitions, 4585 flow [2024-10-14 14:36:26,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3245, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4585, PETRI_PLACES=142, PETRI_TRANSITIONS=396} [2024-10-14 14:36:26,086 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 99 predicate places. [2024-10-14 14:36:26,086 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 396 transitions, 4585 flow [2024-10-14 14:36:26,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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) [2024-10-14 14:36:26,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:26,086 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] [2024-10-14 14:36:26,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 14:36:26,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:26,287 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)] === [2024-10-14 14:36:26,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:26,288 INFO L85 PathProgramCache]: Analyzing trace with hash -986247304, now seen corresponding path program 1 times [2024-10-14 14:36:26,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:26,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158945950] [2024-10-14 14:36:26,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:26,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:26,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:26,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158945950] [2024-10-14 14:36:26,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158945950] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:26,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956377323] [2024-10-14 14:36:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:26,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:26,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:36:26,450 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) [2024-10-14 14:36:26,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 14:36:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:26,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-14 14:36:26,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:36:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:27,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:36:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:36:28,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956377323] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 14:36:28,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 14:36:28,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6, 12] total 24 [2024-10-14 14:36:28,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091975518] [2024-10-14 14:36:28,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:28,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:36:28,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:28,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:36:28,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-10-14 14:36:28,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:36:28,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 396 transitions, 4585 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:28,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:28,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:36:28,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:36,709 INFO L124 PetriNetUnfolderBase]: 41672/57206 cut-off events. [2024-10-14 14:36:36,710 INFO L125 PetriNetUnfolderBase]: For 192114/192114 co-relation queries the response was YES. [2024-10-14 14:36:37,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234156 conditions, 57206 events. 41672/57206 cut-off events. For 192114/192114 co-relation queries the response was YES. Maximal size of possible extension queue 2150. Compared 349253 event pairs, 4240 based on Foata normal form. 1/51401 useless extension candidates. Maximal degree in co-relation 234112. Up to 20615 conditions per place. [2024-10-14 14:36:37,420 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 465 selfloop transitions, 340 changer transitions 10/816 dead transitions. [2024-10-14 14:36:37,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 816 transitions, 9521 flow [2024-10-14 14:36:37,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 14:36:37,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-14 14:36:37,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 376 transitions. [2024-10-14 14:36:37,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-10-14 14:36:37,423 INFO L175 Difference]: Start difference. First operand has 142 places, 396 transitions, 4585 flow. Second operand 16 states and 376 transitions. [2024-10-14 14:36:37,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 816 transitions, 9521 flow [2024-10-14 14:36:39,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 816 transitions, 8980 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-10-14 14:36:39,209 INFO L231 Difference]: Finished difference. Result has 163 places, 499 transitions, 6485 flow [2024-10-14 14:36:39,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4204, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6485, PETRI_PLACES=163, PETRI_TRANSITIONS=499} [2024-10-14 14:36:39,210 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 120 predicate places. [2024-10-14 14:36:39,210 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 499 transitions, 6485 flow [2024-10-14 14:36:39,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:39,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:39,210 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, 1, 1, 1, 1, 1, 1] [2024-10-14 14:36:39,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 14:36:39,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:36:39,411 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)] === [2024-10-14 14:36:39,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:39,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1438279260, now seen corresponding path program 1 times [2024-10-14 14:36:39,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:39,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330421113] [2024-10-14 14:36:39,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:39,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:39,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:39,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:39,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330421113] [2024-10-14 14:36:39,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330421113] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:39,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:39,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:36:39,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370459805] [2024-10-14 14:36:39,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:39,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:36:39,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:39,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:36:39,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:36:39,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:36:39,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 499 transitions, 6485 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:39,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:39,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:36:39,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:36:47,986 INFO L124 PetriNetUnfolderBase]: 46504/65042 cut-off events. [2024-10-14 14:36:47,986 INFO L125 PetriNetUnfolderBase]: For 377707/377707 co-relation queries the response was YES. [2024-10-14 14:36:49,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289197 conditions, 65042 events. 46504/65042 cut-off events. For 377707/377707 co-relation queries the response was YES. Maximal size of possible extension queue 2482. Compared 422296 event pairs, 21727 based on Foata normal form. 0/59529 useless extension candidates. Maximal degree in co-relation 289141. Up to 36189 conditions per place. [2024-10-14 14:36:49,244 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 724 selfloop transitions, 48 changer transitions 55/828 dead transitions. [2024-10-14 14:36:49,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 828 transitions, 12094 flow [2024-10-14 14:36:49,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:36:49,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:36:49,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-10-14 14:36:49,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43197278911564624 [2024-10-14 14:36:49,245 INFO L175 Difference]: Start difference. First operand has 163 places, 499 transitions, 6485 flow. Second operand 6 states and 127 transitions. [2024-10-14 14:36:49,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 828 transitions, 12094 flow [2024-10-14 14:36:53,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 828 transitions, 11856 flow, removed 119 selfloop flow, removed 1 redundant places. [2024-10-14 14:36:53,647 INFO L231 Difference]: Finished difference. Result has 169 places, 479 transitions, 6291 flow [2024-10-14 14:36:53,648 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5758, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6291, PETRI_PLACES=169, PETRI_TRANSITIONS=479} [2024-10-14 14:36:53,648 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 126 predicate places. [2024-10-14 14:36:53,648 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 479 transitions, 6291 flow [2024-10-14 14:36:53,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:53,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:36:53,648 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] [2024-10-14 14:36:53,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-14 14:36:53,648 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)] === [2024-10-14 14:36:53,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:36:53,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1049668118, now seen corresponding path program 1 times [2024-10-14 14:36:53,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:36:53,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549682989] [2024-10-14 14:36:53,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:36:53,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:36:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:36:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:36:53,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:36:53,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549682989] [2024-10-14 14:36:53,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549682989] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:36:53,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:36:53,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:36:53,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387177440] [2024-10-14 14:36:53,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:36:53,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:36:53,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:36:53,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:36:53,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:36:53,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-14 14:36:53,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 479 transitions, 6291 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:36:53,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:36:53,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-14 14:36:53,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand