./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 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:28:07,691 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:28:07,746 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:28:07,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:28:07,751 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:28:07,776 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:28:07,777 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:28:07,777 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:28:07,778 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:28:07,778 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:28:07,779 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:28:07,779 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:28:07,779 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:28:07,781 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:28:07,781 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:28:07,781 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:28:07,782 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:28:07,782 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:28:07,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:28:07,782 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:28:07,782 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:28:07,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:28:07,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:28:07,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:28:07,786 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:28:07,786 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:28:07,786 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:28:07,786 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:28:07,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:28:07,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:28:07,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:28:07,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:28:07,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:28:07,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:28:07,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:28:07,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:28:07,787 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:28:07,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:28:07,788 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:28:07,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:28:07,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:28:07,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:28:07,790 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2024-10-11 14:28:08,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:28:08,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:28:08,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:28:08,040 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:28:08,040 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:28:08,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-10-11 14:28:09,447 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:28:09,634 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:28:09,635 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-10-11 14:28:09,644 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/6570c0e0b/dd92daa70fbe498499a2de3185586436/FLAGed5172341 [2024-10-11 14:28:09,658 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/6570c0e0b/dd92daa70fbe498499a2de3185586436 [2024-10-11 14:28:09,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:28:09,662 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:28:09,665 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:28:09,665 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:28:09,670 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:28:09,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:09" (1/1) ... [2024-10-11 14:28:09,671 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9756603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:09, skipping insertion in model container [2024-10-11 14:28:09,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:09" (1/1) ... [2024-10-11 14:28:09,698 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:28:09,915 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] [2024-10-11 14:28:09,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:28:09,952 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:28:09,982 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] [2024-10-11 14:28:09,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:28:10,008 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:28:10,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:10 WrapperNode [2024-10-11 14:28:10,009 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:28:10,010 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:28:10,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:28:10,010 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:28:10,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:10" (1/1) ... [2024-10-11 14:28:10,029 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:10" (1/1) ... [2024-10-11 14:28:10,053 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 169 [2024-10-11 14:28:10,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:28:10,054 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:28:10,054 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:28:10,054 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:28:10,063 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:10" (1/1) ... [2024-10-11 14:28:10,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:10" (1/1) ... [2024-10-11 14:28:10,066 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:10" (1/1) ... [2024-10-11 14:28:10,079 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]. [2024-10-11 14:28:10,080 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:10" (1/1) ... [2024-10-11 14:28:10,080 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:10" (1/1) ... [2024-10-11 14:28:10,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:10" (1/1) ... [2024-10-11 14:28:10,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:10" (1/1) ... [2024-10-11 14:28:10,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:10" (1/1) ... [2024-10-11 14:28:10,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:10" (1/1) ... [2024-10-11 14:28:10,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:28:10,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:28:10,095 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:28:10,095 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:28:10,096 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:10" (1/1) ... [2024-10-11 14:28:10,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:28:10,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:10,131 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:28:10,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:28:10,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:28:10,171 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:28:10,171 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:28:10,171 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:28:10,171 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:28:10,172 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:28:10,172 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:28:10,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:28:10,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:28:10,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:28:10,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:28:10,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 14:28:10,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:28:10,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:28:10,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:28:10,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:28:10,174 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:28:10,314 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:28:10,316 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:28:10,653 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:28:10,653 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:28:10,906 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:28:10,906 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-11 14:28:10,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:10 BoogieIcfgContainer [2024-10-11 14:28:10,907 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:28:10,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:28:10,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:28:10,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:28:10,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:09" (1/3) ... [2024-10-11 14:28:10,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2541bafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:10, skipping insertion in model container [2024-10-11 14:28:10,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:10" (2/3) ... [2024-10-11 14:28:10,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2541bafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:10, skipping insertion in model container [2024-10-11 14:28:10,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:10" (3/3) ... [2024-10-11 14:28:10,918 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2024-10-11 14:28:10,936 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:28:10,936 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:28:10,936 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:28:10,985 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 14:28:11,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-10-11 14:28:11,054 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-10-11 14:28:11,056 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:28:11,058 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. [2024-10-11 14:28:11,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-10-11 14:28:11,062 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-10-11 14:28:11,072 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:28:11,080 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;@223f43d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:28:11,080 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 14:28:11,094 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:28:11,094 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-10-11 14:28:11,094 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:28:11,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:11,095 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:11,095 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:11,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:11,100 INFO L85 PathProgramCache]: Analyzing trace with hash -220026163, now seen corresponding path program 1 times [2024-10-11 14:28:11,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:11,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054987100] [2024-10-11 14:28:11,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:11,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:11,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:11,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054987100] [2024-10-11 14:28:11,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054987100] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:11,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:11,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:28:11,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262004610] [2024-10-11 14:28:11,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:11,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:28:11,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:11,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:28:11,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:28:11,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:11,616 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) [2024-10-11 14:28:11,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:11,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:11,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:12,110 INFO L124 PetriNetUnfolderBase]: 3738/4998 cut-off events. [2024-10-11 14:28:12,111 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2024-10-11 14:28:12,122 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. [2024-10-11 14:28:12,141 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 65 selfloop transitions, 2 changer transitions 5/73 dead transitions. [2024-10-11 14:28:12,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 73 transitions, 323 flow [2024-10-11 14:28:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:28:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:28:12,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-10-11 14:28:12,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5782312925170068 [2024-10-11 14:28:12,155 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 85 transitions. [2024-10-11 14:28:12,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 73 transitions, 323 flow [2024-10-11 14:28:12,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 73 transitions, 301 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 14:28:12,171 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 106 flow [2024-10-11 14:28:12,172 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} [2024-10-11 14:28:12,176 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-10-11 14:28:12,177 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 106 flow [2024-10-11 14:28:12,177 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) [2024-10-11 14:28:12,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:12,177 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:12,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:28:12,178 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:12,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:12,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1290270659, now seen corresponding path program 1 times [2024-10-11 14:28:12,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:12,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165392737] [2024-10-11 14:28:12,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:12,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:13,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:13,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165392737] [2024-10-11 14:28:13,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165392737] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:13,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:13,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:28:13,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990019799] [2024-10-11 14:28:13,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:13,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:28:13,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:13,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:28:13,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:28:13,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:13,087 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) [2024-10-11 14:28:13,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:13,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:13,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:13,652 INFO L124 PetriNetUnfolderBase]: 3507/4756 cut-off events. [2024-10-11 14:28:13,652 INFO L125 PetriNetUnfolderBase]: For 334/334 co-relation queries the response was YES. [2024-10-11 14:28:13,658 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. [2024-10-11 14:28:13,673 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 87 selfloop transitions, 9 changer transitions 14/111 dead transitions. [2024-10-11 14:28:13,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 111 transitions, 485 flow [2024-10-11 14:28:13,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:28:13,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:28:13,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-10-11 14:28:13,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-10-11 14:28:13,676 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 106 flow. Second operand 6 states and 132 transitions. [2024-10-11 14:28:13,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 111 transitions, 485 flow [2024-10-11 14:28:13,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 111 transitions, 475 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 14:28:13,691 INFO L231 Difference]: Finished difference. Result has 49 places, 52 transitions, 170 flow [2024-10-11 14:28:13,692 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} [2024-10-11 14:28:13,692 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-10-11 14:28:13,692 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 170 flow [2024-10-11 14:28:13,693 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) [2024-10-11 14:28:13,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:13,693 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:13,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:28:13,693 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:13,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:13,694 INFO L85 PathProgramCache]: Analyzing trace with hash 510529653, now seen corresponding path program 2 times [2024-10-11 14:28:13,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:13,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388937672] [2024-10-11 14:28:13,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:13,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:14,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:14,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:14,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388937672] [2024-10-11 14:28:14,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388937672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:14,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:14,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:28:14,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140296665] [2024-10-11 14:28:14,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:14,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:28:14,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:14,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:28:14,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:28:14,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:14,098 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) [2024-10-11 14:28:14,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:14,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:14,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:14,588 INFO L124 PetriNetUnfolderBase]: 4215/5817 cut-off events. [2024-10-11 14:28:14,588 INFO L125 PetriNetUnfolderBase]: For 1352/1352 co-relation queries the response was YES. [2024-10-11 14:28:14,595 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. [2024-10-11 14:28:14,613 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 88 selfloop transitions, 3 changer transitions 15/107 dead transitions. [2024-10-11 14:28:14,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 107 transitions, 534 flow [2024-10-11 14:28:14,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:14,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:14,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-10-11 14:28:14,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47346938775510206 [2024-10-11 14:28:14,615 INFO L175 Difference]: Start difference. First operand has 49 places, 52 transitions, 170 flow. Second operand 5 states and 116 transitions. [2024-10-11 14:28:14,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 107 transitions, 534 flow [2024-10-11 14:28:14,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 107 transitions, 528 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-11 14:28:14,621 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 188 flow [2024-10-11 14:28:14,621 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} [2024-10-11 14:28:14,622 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-10-11 14:28:14,622 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 188 flow [2024-10-11 14:28:14,622 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) [2024-10-11 14:28:14,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:14,622 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:14,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:28:14,623 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:14,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:14,623 INFO L85 PathProgramCache]: Analyzing trace with hash -574546763, now seen corresponding path program 3 times [2024-10-11 14:28:14,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:14,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927490822] [2024-10-11 14:28:14,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:14,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:15,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:15,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:15,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927490822] [2024-10-11 14:28:15,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927490822] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:15,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:15,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:28:15,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644448645] [2024-10-11 14:28:15,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:15,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:28:15,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:15,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:28:15,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:28:15,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:15,033 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) [2024-10-11 14:28:15,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:15,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:15,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:15,551 INFO L124 PetriNetUnfolderBase]: 4645/6434 cut-off events. [2024-10-11 14:28:15,551 INFO L125 PetriNetUnfolderBase]: For 2951/2951 co-relation queries the response was YES. [2024-10-11 14:28:15,559 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. [2024-10-11 14:28:15,578 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 92 selfloop transitions, 3 changer transitions 15/111 dead transitions. [2024-10-11 14:28:15,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 111 transitions, 563 flow [2024-10-11 14:28:15,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:15,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-10-11 14:28:15,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-10-11 14:28:15,579 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 188 flow. Second operand 5 states and 120 transitions. [2024-10-11 14:28:15,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 111 transitions, 563 flow [2024-10-11 14:28:15,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 111 transitions, 552 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-11 14:28:15,595 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 203 flow [2024-10-11 14:28:15,595 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} [2024-10-11 14:28:15,596 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2024-10-11 14:28:15,596 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 203 flow [2024-10-11 14:28:15,596 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) [2024-10-11 14:28:15,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:15,596 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:15,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:28:15,596 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:15,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:15,597 INFO L85 PathProgramCache]: Analyzing trace with hash -330068201, now seen corresponding path program 4 times [2024-10-11 14:28:15,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:15,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863530324] [2024-10-11 14:28:15,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:15,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:15,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:15,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863530324] [2024-10-11 14:28:15,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863530324] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:15,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:15,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:28:15,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171772728] [2024-10-11 14:28:15,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:15,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:28:15,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:15,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:28:15,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:28:15,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:15,981 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) [2024-10-11 14:28:15,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:15,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:15,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:16,570 INFO L124 PetriNetUnfolderBase]: 5270/7359 cut-off events. [2024-10-11 14:28:16,570 INFO L125 PetriNetUnfolderBase]: For 5567/5567 co-relation queries the response was YES. [2024-10-11 14:28:16,580 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. [2024-10-11 14:28:16,599 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 80 selfloop transitions, 11 changer transitions 16/108 dead transitions. [2024-10-11 14:28:16,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 108 transitions, 586 flow [2024-10-11 14:28:16,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:28:16,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:28:16,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-10-11 14:28:16,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-10-11 14:28:16,601 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 203 flow. Second operand 6 states and 124 transitions. [2024-10-11 14:28:16,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 108 transitions, 586 flow [2024-10-11 14:28:16,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 108 transitions, 570 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-11 14:28:16,614 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 242 flow [2024-10-11 14:28:16,614 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} [2024-10-11 14:28:16,614 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-10-11 14:28:16,615 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 242 flow [2024-10-11 14:28:16,615 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) [2024-10-11 14:28:16,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:16,615 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:16,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:28:16,615 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:16,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:16,616 INFO L85 PathProgramCache]: Analyzing trace with hash -458472143, now seen corresponding path program 5 times [2024-10-11 14:28:16,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:16,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621879888] [2024-10-11 14:28:16,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:16,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:16,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:16,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:16,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621879888] [2024-10-11 14:28:16,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621879888] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:16,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:16,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:28:16,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448782219] [2024-10-11 14:28:16,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:16,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:28:16,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:16,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:28:16,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:28:16,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:16,974 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) [2024-10-11 14:28:16,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:16,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:16,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:17,609 INFO L124 PetriNetUnfolderBase]: 5153/7169 cut-off events. [2024-10-11 14:28:17,609 INFO L125 PetriNetUnfolderBase]: For 6533/6533 co-relation queries the response was YES. [2024-10-11 14:28:17,623 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. [2024-10-11 14:28:17,645 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 97 selfloop transitions, 4 changer transitions 14/116 dead transitions. [2024-10-11 14:28:17,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 116 transitions, 635 flow [2024-10-11 14:28:17,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:17,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:17,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-10-11 14:28:17,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5020408163265306 [2024-10-11 14:28:17,646 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 242 flow. Second operand 5 states and 123 transitions. [2024-10-11 14:28:17,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 116 transitions, 635 flow [2024-10-11 14:28:17,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 116 transitions, 615 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-11 14:28:17,667 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 238 flow [2024-10-11 14:28:17,667 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} [2024-10-11 14:28:17,668 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-10-11 14:28:17,668 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 238 flow [2024-10-11 14:28:17,668 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) [2024-10-11 14:28:17,668 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:17,668 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:17,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:28:17,669 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:17,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:17,669 INFO L85 PathProgramCache]: Analyzing trace with hash 871185299, now seen corresponding path program 6 times [2024-10-11 14:28:17,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:17,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677871809] [2024-10-11 14:28:17,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:17,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:18,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:18,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677871809] [2024-10-11 14:28:18,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677871809] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:18,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:18,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:28:18,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922325184] [2024-10-11 14:28:18,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:18,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:28:18,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:18,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:28:18,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:28:18,044 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:18,044 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) [2024-10-11 14:28:18,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:18,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:18,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:18,537 INFO L124 PetriNetUnfolderBase]: 5041/7000 cut-off events. [2024-10-11 14:28:18,538 INFO L125 PetriNetUnfolderBase]: For 7038/7038 co-relation queries the response was YES. [2024-10-11 14:28:18,552 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. [2024-10-11 14:28:18,575 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 94 selfloop transitions, 3 changer transitions 14/112 dead transitions. [2024-10-11 14:28:18,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 112 transitions, 613 flow [2024-10-11 14:28:18,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:18,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:18,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-10-11 14:28:18,577 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-10-11 14:28:18,577 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 238 flow. Second operand 5 states and 119 transitions. [2024-10-11 14:28:18,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 112 transitions, 613 flow [2024-10-11 14:28:18,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 112 transitions, 602 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-11 14:28:18,596 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 240 flow [2024-10-11 14:28:18,596 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} [2024-10-11 14:28:18,597 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2024-10-11 14:28:18,597 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 240 flow [2024-10-11 14:28:18,597 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) [2024-10-11 14:28:18,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:18,598 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] [2024-10-11 14:28:18,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:28:18,598 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:18,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:18,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2016084104, now seen corresponding path program 1 times [2024-10-11 14:28:18,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:18,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022241517] [2024-10-11 14:28:18,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:18,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:18,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:18,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022241517] [2024-10-11 14:28:18,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022241517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:18,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:18,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:28:18,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984527491] [2024-10-11 14:28:18,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:18,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:28:18,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:18,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:28:18,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:28:18,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:18,704 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) [2024-10-11 14:28:18,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:18,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:18,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:19,205 INFO L124 PetriNetUnfolderBase]: 6044/8410 cut-off events. [2024-10-11 14:28:19,205 INFO L125 PetriNetUnfolderBase]: For 9162/9162 co-relation queries the response was YES. [2024-10-11 14:28:19,224 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. [2024-10-11 14:28:19,253 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 94 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2024-10-11 14:28:19,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 101 transitions, 582 flow [2024-10-11 14:28:19,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:28:19,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:28:19,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-10-11 14:28:19,254 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-10-11 14:28:19,254 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 240 flow. Second operand 4 states and 105 transitions. [2024-10-11 14:28:19,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 101 transitions, 582 flow [2024-10-11 14:28:19,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 101 transitions, 573 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-11 14:28:19,272 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 296 flow [2024-10-11 14:28:19,272 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} [2024-10-11 14:28:19,273 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-10-11 14:28:19,273 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 296 flow [2024-10-11 14:28:19,273 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) [2024-10-11 14:28:19,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:19,274 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:19,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 14:28:19,274 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:19,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:19,274 INFO L85 PathProgramCache]: Analyzing trace with hash 895690072, now seen corresponding path program 2 times [2024-10-11 14:28:19,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:19,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299314857] [2024-10-11 14:28:19,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:19,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:19,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:19,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299314857] [2024-10-11 14:28:19,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299314857] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:19,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:19,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:28:19,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146537520] [2024-10-11 14:28:19,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:19,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:28:19,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:19,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:28:19,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:28:19,348 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:19,348 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) [2024-10-11 14:28:19,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:19,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:19,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:19,854 INFO L124 PetriNetUnfolderBase]: 5676/7907 cut-off events. [2024-10-11 14:28:19,855 INFO L125 PetriNetUnfolderBase]: For 8509/8509 co-relation queries the response was YES. [2024-10-11 14:28:19,872 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. [2024-10-11 14:28:19,898 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 99 selfloop transitions, 8 changer transitions 0/108 dead transitions. [2024-10-11 14:28:19,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 108 transitions, 688 flow [2024-10-11 14:28:19,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:28:19,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:28:19,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-10-11 14:28:19,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-10-11 14:28:19,902 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 296 flow. Second operand 4 states and 105 transitions. [2024-10-11 14:28:19,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 108 transitions, 688 flow [2024-10-11 14:28:19,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 108 transitions, 688 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:28:19,922 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 385 flow [2024-10-11 14:28:19,922 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} [2024-10-11 14:28:19,923 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2024-10-11 14:28:19,924 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 385 flow [2024-10-11 14:28:19,924 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) [2024-10-11 14:28:19,924 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:19,925 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] [2024-10-11 14:28:19,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 14:28:19,925 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:19,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:19,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1223396110, now seen corresponding path program 3 times [2024-10-11 14:28:19,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:19,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609112126] [2024-10-11 14:28:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:19,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:19,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:19,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609112126] [2024-10-11 14:28:19,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609112126] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:19,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:19,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:28:19,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034611973] [2024-10-11 14:28:19,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:19,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:28:19,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:19,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:28:19,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:28:19,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:19,999 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) [2024-10-11 14:28:20,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:20,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:20,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:20,658 INFO L124 PetriNetUnfolderBase]: 5348/7444 cut-off events. [2024-10-11 14:28:20,658 INFO L125 PetriNetUnfolderBase]: For 10280/10280 co-relation queries the response was YES. [2024-10-11 14:28:20,680 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. [2024-10-11 14:28:20,724 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 99 selfloop transitions, 11 changer transitions 2/113 dead transitions. [2024-10-11 14:28:20,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 113 transitions, 742 flow [2024-10-11 14:28:20,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:20,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:20,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-10-11 14:28:20,726 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4775510204081633 [2024-10-11 14:28:20,726 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 385 flow. Second operand 5 states and 117 transitions. [2024-10-11 14:28:20,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 113 transitions, 742 flow [2024-10-11 14:28:20,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 113 transitions, 740 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-11 14:28:20,749 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 415 flow [2024-10-11 14:28:20,749 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} [2024-10-11 14:28:20,749 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-10-11 14:28:20,750 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 415 flow [2024-10-11 14:28:20,750 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) [2024-10-11 14:28:20,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:20,750 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] [2024-10-11 14:28:20,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 14:28:20,750 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:20,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:20,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1591909984, now seen corresponding path program 1 times [2024-10-11 14:28:20,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:20,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513726707] [2024-10-11 14:28:20,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:20,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:20,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:20,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:20,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513726707] [2024-10-11 14:28:20,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513726707] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:20,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:20,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:28:20,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010332881] [2024-10-11 14:28:20,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:20,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:28:20,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:20,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:28:20,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:28:20,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:20,812 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) [2024-10-11 14:28:20,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:20,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:20,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:21,294 INFO L124 PetriNetUnfolderBase]: 6218/8668 cut-off events. [2024-10-11 14:28:21,294 INFO L125 PetriNetUnfolderBase]: For 13282/13282 co-relation queries the response was YES. [2024-10-11 14:28:21,310 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. [2024-10-11 14:28:21,328 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 97 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2024-10-11 14:28:21,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 108 transitions, 754 flow [2024-10-11 14:28:21,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:28:21,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:28:21,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-10-11 14:28:21,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-10-11 14:28:21,330 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 415 flow. Second operand 4 states and 104 transitions. [2024-10-11 14:28:21,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 108 transitions, 754 flow [2024-10-11 14:28:21,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 108 transitions, 719 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-11 14:28:21,359 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 444 flow [2024-10-11 14:28:21,359 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} [2024-10-11 14:28:21,360 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-10-11 14:28:21,360 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 444 flow [2024-10-11 14:28:21,360 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) [2024-10-11 14:28:21,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:21,360 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] [2024-10-11 14:28:21,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 14:28:21,361 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:21,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:21,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1076861620, now seen corresponding path program 2 times [2024-10-11 14:28:21,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:21,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760599695] [2024-10-11 14:28:21,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:21,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:21,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:21,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760599695] [2024-10-11 14:28:21,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760599695] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:21,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:21,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:28:21,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058391434] [2024-10-11 14:28:21,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:21,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:28:21,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:21,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:28:21,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:28:21,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:21,419 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) [2024-10-11 14:28:21,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:21,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:21,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:21,927 INFO L124 PetriNetUnfolderBase]: 5884/8196 cut-off events. [2024-10-11 14:28:21,927 INFO L125 PetriNetUnfolderBase]: For 10758/10758 co-relation queries the response was YES. [2024-10-11 14:28:21,941 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. [2024-10-11 14:28:21,956 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 105 selfloop transitions, 11 changer transitions 3/120 dead transitions. [2024-10-11 14:28:21,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 120 transitions, 825 flow [2024-10-11 14:28:21,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:21,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:21,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-10-11 14:28:21,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-10-11 14:28:21,958 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 444 flow. Second operand 5 states and 120 transitions. [2024-10-11 14:28:21,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 120 transitions, 825 flow [2024-10-11 14:28:21,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 120 transitions, 807 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-11 14:28:21,982 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 478 flow [2024-10-11 14:28:21,982 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} [2024-10-11 14:28:21,982 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-10-11 14:28:21,983 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 478 flow [2024-10-11 14:28:21,983 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) [2024-10-11 14:28:21,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:21,983 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] [2024-10-11 14:28:21,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 14:28:21,983 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:21,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:21,983 INFO L85 PathProgramCache]: Analyzing trace with hash 542634404, now seen corresponding path program 3 times [2024-10-11 14:28:21,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:21,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616477603] [2024-10-11 14:28:21,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:21,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:22,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:22,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616477603] [2024-10-11 14:28:22,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616477603] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:22,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:22,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:28:22,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387949659] [2024-10-11 14:28:22,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:22,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:28:22,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:22,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:28:22,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:28:22,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:22,059 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) [2024-10-11 14:28:22,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:22,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:22,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:22,480 INFO L124 PetriNetUnfolderBase]: 5222/7261 cut-off events. [2024-10-11 14:28:22,480 INFO L125 PetriNetUnfolderBase]: For 12533/12533 co-relation queries the response was YES. [2024-10-11 14:28:22,498 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. [2024-10-11 14:28:22,516 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 118 selfloop transitions, 7 changer transitions 6/132 dead transitions. [2024-10-11 14:28:22,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 132 transitions, 882 flow [2024-10-11 14:28:22,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:22,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:22,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-10-11 14:28:22,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-10-11 14:28:22,517 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 478 flow. Second operand 5 states and 128 transitions. [2024-10-11 14:28:22,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 132 transitions, 882 flow [2024-10-11 14:28:22,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 132 transitions, 868 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-11 14:28:22,542 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 443 flow [2024-10-11 14:28:22,543 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} [2024-10-11 14:28:22,543 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-10-11 14:28:22,544 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 443 flow [2024-10-11 14:28:22,544 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) [2024-10-11 14:28:22,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:22,544 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] [2024-10-11 14:28:22,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 14:28:22,544 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:22,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:22,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1097262630, now seen corresponding path program 4 times [2024-10-11 14:28:22,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:22,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884592853] [2024-10-11 14:28:22,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:22,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:22,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:22,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884592853] [2024-10-11 14:28:22,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884592853] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:22,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:22,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:28:22,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551685969] [2024-10-11 14:28:22,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:22,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:28:22,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:22,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:28:22,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:28:22,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:22,601 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) [2024-10-11 14:28:22,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:22,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:22,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:22,964 INFO L124 PetriNetUnfolderBase]: 4621/6392 cut-off events. [2024-10-11 14:28:22,964 INFO L125 PetriNetUnfolderBase]: For 11663/11663 co-relation queries the response was YES. [2024-10-11 14:28:22,978 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. [2024-10-11 14:28:22,992 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 91 selfloop transitions, 10 changer transitions 2/104 dead transitions. [2024-10-11 14:28:22,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 104 transitions, 735 flow [2024-10-11 14:28:22,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:28:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:28:22,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-10-11 14:28:22,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-10-11 14:28:22,993 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 443 flow. Second operand 4 states and 100 transitions. [2024-10-11 14:28:22,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 104 transitions, 735 flow [2024-10-11 14:28:23,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 104 transitions, 709 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-10-11 14:28:23,015 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 421 flow [2024-10-11 14:28:23,015 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} [2024-10-11 14:28:23,016 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-10-11 14:28:23,016 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 421 flow [2024-10-11 14:28:23,016 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) [2024-10-11 14:28:23,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:23,016 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] [2024-10-11 14:28:23,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 14:28:23,016 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:23,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:23,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1650530228, now seen corresponding path program 5 times [2024-10-11 14:28:23,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:23,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269962674] [2024-10-11 14:28:23,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:23,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:23,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:23,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269962674] [2024-10-11 14:28:23,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269962674] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:23,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:23,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:28:23,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703189259] [2024-10-11 14:28:23,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:23,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:28:23,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:23,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:28:23,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:28:23,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:23,065 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) [2024-10-11 14:28:23,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:23,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:23,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:23,461 INFO L124 PetriNetUnfolderBase]: 4526/6259 cut-off events. [2024-10-11 14:28:23,461 INFO L125 PetriNetUnfolderBase]: For 8040/8040 co-relation queries the response was YES. [2024-10-11 14:28:23,471 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. [2024-10-11 14:28:23,482 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 84 selfloop transitions, 1 changer transitions 14/100 dead transitions. [2024-10-11 14:28:23,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 100 transitions, 693 flow [2024-10-11 14:28:23,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:28:23,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:28:23,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-10-11 14:28:23,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4744897959183674 [2024-10-11 14:28:23,484 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 421 flow. Second operand 4 states and 93 transitions. [2024-10-11 14:28:23,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 100 transitions, 693 flow [2024-10-11 14:28:23,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 100 transitions, 665 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-11 14:28:23,499 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 379 flow [2024-10-11 14:28:23,500 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} [2024-10-11 14:28:23,501 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-10-11 14:28:23,501 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 379 flow [2024-10-11 14:28:23,501 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) [2024-10-11 14:28:23,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:23,501 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] [2024-10-11 14:28:23,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 14:28:23,501 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:23,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:23,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1814186152, now seen corresponding path program 4 times [2024-10-11 14:28:23,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:23,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899509668] [2024-10-11 14:28:23,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:23,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:23,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:23,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899509668] [2024-10-11 14:28:23,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899509668] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:23,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:23,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:28:23,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537308389] [2024-10-11 14:28:23,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:23,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:28:23,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:23,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:28:23,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:28:23,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:23,564 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) [2024-10-11 14:28:23,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:23,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:23,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:23,942 INFO L124 PetriNetUnfolderBase]: 4155/5726 cut-off events. [2024-10-11 14:28:23,942 INFO L125 PetriNetUnfolderBase]: For 5951/5951 co-relation queries the response was YES. [2024-10-11 14:28:23,956 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. [2024-10-11 14:28:23,970 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 72 selfloop transitions, 5 changer transitions 16/94 dead transitions. [2024-10-11 14:28:23,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 94 transitions, 611 flow [2024-10-11 14:28:23,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:28:23,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:28:23,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-10-11 14:28:23,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-10-11 14:28:23,971 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 379 flow. Second operand 4 states and 92 transitions. [2024-10-11 14:28:23,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 94 transitions, 611 flow [2024-10-11 14:28:23,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 94 transitions, 610 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:28:23,982 INFO L231 Difference]: Finished difference. Result has 83 places, 63 transitions, 348 flow [2024-10-11 14:28:23,983 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} [2024-10-11 14:28:23,983 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-10-11 14:28:23,983 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 63 transitions, 348 flow [2024-10-11 14:28:23,983 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) [2024-10-11 14:28:23,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:23,984 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] [2024-10-11 14:28:23,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 14:28:23,984 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:23,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:23,984 INFO L85 PathProgramCache]: Analyzing trace with hash -70028716, now seen corresponding path program 5 times [2024-10-11 14:28:23,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:23,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839749750] [2024-10-11 14:28:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:23,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:24,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:24,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839749750] [2024-10-11 14:28:24,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839749750] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:24,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:24,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:28:24,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061372763] [2024-10-11 14:28:24,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:24,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:28:24,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:24,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:28:24,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:28:24,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:24,028 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) [2024-10-11 14:28:24,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:24,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:24,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:24,408 INFO L124 PetriNetUnfolderBase]: 3657/5013 cut-off events. [2024-10-11 14:28:24,409 INFO L125 PetriNetUnfolderBase]: For 5007/5007 co-relation queries the response was YES. [2024-10-11 14:28:24,420 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. [2024-10-11 14:28:24,433 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 59 selfloop transitions, 0 changer transitions 15/75 dead transitions. [2024-10-11 14:28:24,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 75 transitions, 501 flow [2024-10-11 14:28:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:28:24,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:28:24,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-10-11 14:28:24,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37244897959183676 [2024-10-11 14:28:24,435 INFO L175 Difference]: Start difference. First operand has 83 places, 63 transitions, 348 flow. Second operand 4 states and 73 transitions. [2024-10-11 14:28:24,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 75 transitions, 501 flow [2024-10-11 14:28:24,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 75 transitions, 485 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-11 14:28:24,441 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 292 flow [2024-10-11 14:28:24,441 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} [2024-10-11 14:28:24,441 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-10-11 14:28:24,441 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 292 flow [2024-10-11 14:28:24,442 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) [2024-10-11 14:28:24,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:24,442 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] [2024-10-11 14:28:24,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 14:28:24,442 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:24,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:24,443 INFO L85 PathProgramCache]: Analyzing trace with hash 295309173, now seen corresponding path program 1 times [2024-10-11 14:28:24,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:24,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182798184] [2024-10-11 14:28:24,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:24,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:24,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:24,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:24,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182798184] [2024-10-11 14:28:24,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182798184] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:24,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:24,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 14:28:24,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156866109] [2024-10-11 14:28:24,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:24,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:28:24,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:24,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:28:24,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:28:24,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:24,883 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) [2024-10-11 14:28:24,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:24,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:24,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:25,630 INFO L124 PetriNetUnfolderBase]: 7769/10596 cut-off events. [2024-10-11 14:28:25,632 INFO L125 PetriNetUnfolderBase]: For 5924/5924 co-relation queries the response was YES. [2024-10-11 14:28:25,664 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. [2024-10-11 14:28:25,692 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 127 selfloop transitions, 13 changer transitions 1/142 dead transitions. [2024-10-11 14:28:25,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 142 transitions, 950 flow [2024-10-11 14:28:25,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:28:25,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:28:25,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-10-11 14:28:25,693 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3935860058309038 [2024-10-11 14:28:25,693 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 292 flow. Second operand 7 states and 135 transitions. [2024-10-11 14:28:25,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 142 transitions, 950 flow [2024-10-11 14:28:25,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 142 transitions, 934 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-11 14:28:25,710 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 377 flow [2024-10-11 14:28:25,710 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} [2024-10-11 14:28:25,711 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2024-10-11 14:28:25,711 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 377 flow [2024-10-11 14:28:25,711 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) [2024-10-11 14:28:25,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:25,711 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] [2024-10-11 14:28:25,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 14:28:25,711 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:25,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:25,712 INFO L85 PathProgramCache]: Analyzing trace with hash 501131277, now seen corresponding path program 1 times [2024-10-11 14:28:25,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:25,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393095520] [2024-10-11 14:28:25,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:25,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:25,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:25,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:25,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393095520] [2024-10-11 14:28:25,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393095520] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:25,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989088699] [2024-10-11 14:28:25,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:25,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:25,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:25,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:25,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:28:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:26,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:28:26,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:26,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:26,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:27,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:28:27,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989088699] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:27,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:28:27,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 12] total 25 [2024-10-11 14:28:27,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622354915] [2024-10-11 14:28:27,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:27,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:28:27,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:27,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:28:27,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2024-10-11 14:28:27,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:27,936 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) [2024-10-11 14:28:27,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:27,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:27,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:30,747 INFO L124 PetriNetUnfolderBase]: 18352/25476 cut-off events. [2024-10-11 14:28:30,747 INFO L125 PetriNetUnfolderBase]: For 14966/14966 co-relation queries the response was YES. [2024-10-11 14:28:30,860 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. [2024-10-11 14:28:30,923 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 327 selfloop transitions, 76 changer transitions 9/413 dead transitions. [2024-10-11 14:28:30,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 413 transitions, 2724 flow [2024-10-11 14:28:30,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 14:28:30,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 14:28:30,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 339 transitions. [2024-10-11 14:28:30,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49416909620991256 [2024-10-11 14:28:30,927 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 377 flow. Second operand 14 states and 339 transitions. [2024-10-11 14:28:30,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 413 transitions, 2724 flow [2024-10-11 14:28:30,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 413 transitions, 2714 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-10-11 14:28:30,976 INFO L231 Difference]: Finished difference. Result has 98 places, 154 transitions, 1053 flow [2024-10-11 14:28:30,982 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} [2024-10-11 14:28:30,983 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2024-10-11 14:28:30,983 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 154 transitions, 1053 flow [2024-10-11 14:28:30,983 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) [2024-10-11 14:28:30,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:30,983 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, 1] [2024-10-11 14:28:30,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 14:28:31,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:31,185 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:31,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:31,185 INFO L85 PathProgramCache]: Analyzing trace with hash 79263759, now seen corresponding path program 2 times [2024-10-11 14:28:31,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:31,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39509199] [2024-10-11 14:28:31,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:31,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:31,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:31,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:31,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39509199] [2024-10-11 14:28:31,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39509199] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:31,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526368262] [2024-10-11 14:28:31,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:28:31,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:31,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:31,447 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:31,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:28:31,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 14:28:31,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:31,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-11 14:28:31,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:28:31,914 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:28:31,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526368262] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:31,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:28:31,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 17 [2024-10-11 14:28:31,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792651326] [2024-10-11 14:28:31,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:31,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:28:31,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:31,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:28:31,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-10-11 14:28:31,917 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:31,918 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) [2024-10-11 14:28:31,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:31,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:31,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:36,261 INFO L124 PetriNetUnfolderBase]: 35282/48049 cut-off events. [2024-10-11 14:28:36,261 INFO L125 PetriNetUnfolderBase]: For 89062/89062 co-relation queries the response was YES. [2024-10-11 14:28:36,537 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. [2024-10-11 14:28:36,695 INFO L140 encePairwiseOnDemand]: 33/49 looper letters, 357 selfloop transitions, 249 changer transitions 2/609 dead transitions. [2024-10-11 14:28:36,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 609 transitions, 5189 flow [2024-10-11 14:28:36,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 14:28:36,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 14:28:36,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 322 transitions. [2024-10-11 14:28:36,697 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2024-10-11 14:28:36,698 INFO L175 Difference]: Start difference. First operand has 98 places, 154 transitions, 1053 flow. Second operand 15 states and 322 transitions. [2024-10-11 14:28:36,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 609 transitions, 5189 flow [2024-10-11 14:28:37,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 609 transitions, 5119 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-10-11 14:28:37,484 INFO L231 Difference]: Finished difference. Result has 119 places, 347 transitions, 3323 flow [2024-10-11 14:28:37,484 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} [2024-10-11 14:28:37,484 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 76 predicate places. [2024-10-11 14:28:37,485 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 347 transitions, 3323 flow [2024-10-11 14:28:37,485 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) [2024-10-11 14:28:37,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:37,485 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] [2024-10-11 14:28:37,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 14:28:37,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:37,686 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:37,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:37,686 INFO L85 PathProgramCache]: Analyzing trace with hash -500687249, now seen corresponding path program 3 times [2024-10-11 14:28:37,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:37,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680815275] [2024-10-11 14:28:37,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:37,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:37,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:37,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:37,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680815275] [2024-10-11 14:28:37,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680815275] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:37,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329508089] [2024-10-11 14:28:37,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:28:37,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:37,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:37,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:37,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:28:37,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-11 14:28:37,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:37,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-11 14:28:37,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:28:38,230 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:28:38,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329508089] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:38,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:28:38,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 17 [2024-10-11 14:28:38,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392336316] [2024-10-11 14:28:38,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:38,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:28:38,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:38,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:28:38,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-10-11 14:28:38,231 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:38,231 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) [2024-10-11 14:28:38,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:38,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:38,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:43,452 INFO L124 PetriNetUnfolderBase]: 35528/48451 cut-off events. [2024-10-11 14:28:43,452 INFO L125 PetriNetUnfolderBase]: For 129718/129718 co-relation queries the response was YES. [2024-10-11 14:28:43,835 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. [2024-10-11 14:28:43,977 INFO L140 encePairwiseOnDemand]: 33/49 looper letters, 352 selfloop transitions, 285 changer transitions 4/642 dead transitions. [2024-10-11 14:28:43,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 642 transitions, 6516 flow [2024-10-11 14:28:43,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 14:28:43,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 14:28:43,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 351 transitions. [2024-10-11 14:28:43,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42136854741896757 [2024-10-11 14:28:43,979 INFO L175 Difference]: Start difference. First operand has 119 places, 347 transitions, 3323 flow. Second operand 17 states and 351 transitions. [2024-10-11 14:28:43,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 642 transitions, 6516 flow [2024-10-11 14:28:45,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 642 transitions, 6408 flow, removed 54 selfloop flow, removed 0 redundant places. [2024-10-11 14:28:45,082 INFO L231 Difference]: Finished difference. Result has 142 places, 396 transitions, 4585 flow [2024-10-11 14:28:45,083 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} [2024-10-11 14:28:45,083 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 99 predicate places. [2024-10-11 14:28:45,083 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 396 transitions, 4585 flow [2024-10-11 14:28:45,083 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) [2024-10-11 14:28:45,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:45,084 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] [2024-10-11 14:28:45,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 14:28:45,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:45,288 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)] === [2024-10-11 14:28:45,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:45,292 INFO L85 PathProgramCache]: Analyzing trace with hash -986247304, now seen corresponding path program 1 times [2024-10-11 14:28:45,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:45,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516099841] [2024-10-11 14:28:45,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:45,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:45,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:45,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516099841] [2024-10-11 14:28:45,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516099841] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:45,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062073724] [2024-10-11 14:28:45,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:45,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:45,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:45,413 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:45,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:28:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:45,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-11 14:28:45,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:45,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:45,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:47,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:28:47,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062073724] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:47,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:28:47,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6, 12] total 24 [2024-10-11 14:28:47,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572704730] [2024-10-11 14:28:47,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:47,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:28:47,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:47,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:28:47,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-10-11 14:28:47,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:47,437 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) [2024-10-11 14:28:47,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:47,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:47,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:55,275 INFO L124 PetriNetUnfolderBase]: 41672/57206 cut-off events. [2024-10-11 14:28:55,275 INFO L125 PetriNetUnfolderBase]: For 192114/192114 co-relation queries the response was YES. [2024-10-11 14:28:55,803 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. [2024-10-11 14:28:55,986 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 465 selfloop transitions, 340 changer transitions 10/816 dead transitions. [2024-10-11 14:28:55,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 816 transitions, 9521 flow [2024-10-11 14:28:55,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 14:28:55,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 14:28:55,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 376 transitions. [2024-10-11 14:28:55,988 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-10-11 14:28:55,988 INFO L175 Difference]: Start difference. First operand has 142 places, 396 transitions, 4585 flow. Second operand 16 states and 376 transitions. [2024-10-11 14:28:55,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 816 transitions, 9521 flow [2024-10-11 14:28:57,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 816 transitions, 8980 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-10-11 14:28:57,627 INFO L231 Difference]: Finished difference. Result has 163 places, 499 transitions, 6485 flow [2024-10-11 14:28:57,627 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} [2024-10-11 14:28:57,627 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 120 predicate places. [2024-10-11 14:28:57,628 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 499 transitions, 6485 flow [2024-10-11 14:28:57,628 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) [2024-10-11 14:28:57,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:57,628 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] [2024-10-11 14:28:57,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 14:28:57,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-11 14:28:57,829 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)] === [2024-10-11 14:28:57,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:57,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1438279260, now seen corresponding path program 1 times [2024-10-11 14:28:57,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:57,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566193189] [2024-10-11 14:28:57,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:57,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:57,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:57,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566193189] [2024-10-11 14:28:57,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566193189] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:57,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:57,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:28:57,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234982660] [2024-10-11 14:28:57,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:57,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:28:57,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:57,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:28:57,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:28:57,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:28:57,881 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) [2024-10-11 14:28:57,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:57,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:28:57,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:05,988 INFO L124 PetriNetUnfolderBase]: 46504/65042 cut-off events. [2024-10-11 14:29:05,988 INFO L125 PetriNetUnfolderBase]: For 377707/377707 co-relation queries the response was YES. [2024-10-11 14:29:06,728 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. [2024-10-11 14:29:06,918 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 724 selfloop transitions, 48 changer transitions 55/828 dead transitions. [2024-10-11 14:29:06,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 828 transitions, 12094 flow [2024-10-11 14:29:06,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:29:06,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:29:06,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-10-11 14:29:06,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43197278911564624 [2024-10-11 14:29:06,919 INFO L175 Difference]: Start difference. First operand has 163 places, 499 transitions, 6485 flow. Second operand 6 states and 127 transitions. [2024-10-11 14:29:06,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 828 transitions, 12094 flow [2024-10-11 14:29:11,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 828 transitions, 11856 flow, removed 119 selfloop flow, removed 1 redundant places. [2024-10-11 14:29:11,778 INFO L231 Difference]: Finished difference. Result has 169 places, 479 transitions, 6291 flow [2024-10-11 14:29:11,778 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} [2024-10-11 14:29:11,779 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 126 predicate places. [2024-10-11 14:29:11,779 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 479 transitions, 6291 flow [2024-10-11 14:29:11,779 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) [2024-10-11 14:29:11,779 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:11,779 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] [2024-10-11 14:29:11,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-11 14:29:11,779 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)] === [2024-10-11 14:29:11,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:11,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1049668118, now seen corresponding path program 1 times [2024-10-11 14:29:11,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:11,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797796965] [2024-10-11 14:29:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:11,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:11,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:11,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797796965] [2024-10-11 14:29:11,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797796965] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:11,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:29:11,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:29:11,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677670591] [2024-10-11 14:29:11,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:11,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:29:11,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:11,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:29:11,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:29:11,870 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-10-11 14:29:11,870 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) [2024-10-11 14:29:11,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:11,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-10-11 14:29:11,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand