./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:37:19,498 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:37:19,552 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:37:19,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:37:19,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:37:19,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:37:19,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:37:19,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:37:19,584 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:37:19,584 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:37:19,584 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:37:19,585 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:37:19,585 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:37:19,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:37:19,585 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:37:19,585 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:37:19,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:37:19,586 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:37:19,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:37:19,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:37:19,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:37:19,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:37:19,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:37:19,587 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:37:19,587 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:37:19,587 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:37:19,587 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:37:19,587 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:37:19,587 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:37:19,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:37:19,587 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:37:19,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:37:19,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:37:19,587 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:37:19,587 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:37:19,588 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:37:19,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:37:19,588 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:37:19,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:37:19,588 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:37:19,588 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:37:19,588 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:37:19,589 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:37:19,589 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2025-03-17 06:37:19,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:37:19,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:37:19,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:37:19,797 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:37:19,798 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:37:19,798 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2025-03-17 06:37:20,956 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c01425a1/06c8280c136d4002b0ad84540e7e2218/FLAGb91e4cfd0 [2025-03-17 06:37:21,222 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:37:21,222 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2025-03-17 06:37:21,231 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c01425a1/06c8280c136d4002b0ad84540e7e2218/FLAGb91e4cfd0 [2025-03-17 06:37:21,519 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c01425a1/06c8280c136d4002b0ad84540e7e2218 [2025-03-17 06:37:21,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:37:21,523 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:37:21,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:37:21,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:37:21,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:37:21,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:37:21" (1/1) ... [2025-03-17 06:37:21,529 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77b13c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:21, skipping insertion in model container [2025-03-17 06:37:21,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:37:21" (1/1) ... [2025-03-17 06:37:21,550 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:37:21,722 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6540,6553] [2025-03-17 06:37:21,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:37:21,748 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:37:21,789 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6540,6553] [2025-03-17 06:37:21,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:37:21,802 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:37:21,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:21 WrapperNode [2025-03-17 06:37:21,803 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:37:21,804 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:37:21,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:37:21,805 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:37:21,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:21" (1/1) ... [2025-03-17 06:37:21,820 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:21" (1/1) ... [2025-03-17 06:37:21,857 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 591 [2025-03-17 06:37:21,857 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:37:21,858 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:37:21,858 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:37:21,858 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:37:21,864 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:21" (1/1) ... [2025-03-17 06:37:21,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:21" (1/1) ... [2025-03-17 06:37:21,867 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:21" (1/1) ... [2025-03-17 06:37:21,886 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 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]. [2025-03-17 06:37:21,886 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:21" (1/1) ... [2025-03-17 06:37:21,886 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:21" (1/1) ... [2025-03-17 06:37:21,899 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:21" (1/1) ... [2025-03-17 06:37:21,900 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:21" (1/1) ... [2025-03-17 06:37:21,901 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:21" (1/1) ... [2025-03-17 06:37:21,905 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:21" (1/1) ... [2025-03-17 06:37:21,908 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:37:21,909 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:37:21,909 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:37:21,910 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:37:21,911 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:21" (1/1) ... [2025-03-17 06:37:21,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:37:21,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:37:21,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 06:37:21,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 06:37:21,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:37:21,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 06:37:21,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 06:37:21,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 06:37:21,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 06:37:21,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 06:37:21,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 06:37:21,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:37:21,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:37:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:37:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:37:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 06:37:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:37:21,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:37:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:37:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:37:21,961 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 06:37:22,080 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:37:22,082 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:37:22,761 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 06:37:22,761 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:37:23,302 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:37:23,303 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:37:23,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:37:23 BoogieIcfgContainer [2025-03-17 06:37:23,303 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:37:23,305 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:37:23,305 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:37:23,309 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:37:23,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:37:21" (1/3) ... [2025-03-17 06:37:23,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3f7f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:37:23, skipping insertion in model container [2025-03-17 06:37:23,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:21" (2/3) ... [2025-03-17 06:37:23,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3f7f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:37:23, skipping insertion in model container [2025-03-17 06:37:23,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:37:23" (3/3) ... [2025-03-17 06:37:23,311 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2025-03-17 06:37:23,324 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:37:23,325 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-nzb-file-subst.wvr.c that has 4 procedures, 38 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-03-17 06:37:23,325 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 06:37:23,420 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 06:37:23,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2025-03-17 06:37:23,492 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2025-03-17 06:37:23,494 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 06:37:23,497 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. [2025-03-17 06:37:23,497 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2025-03-17 06:37:23,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2025-03-17 06:37:23,517 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:37:23,527 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;@dbbac4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:37:23,527 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-17 06:37:23,540 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:37:23,541 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2025-03-17 06:37:23,541 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 06:37:23,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:23,541 INFO L206 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] [2025-03-17 06:37:23,542 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)] === [2025-03-17 06:37:23,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:23,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1434096437, now seen corresponding path program 1 times [2025-03-17 06:37:23,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:23,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410511436] [2025-03-17 06:37:23,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:37:23,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:23,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 06:37:23,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 06:37:23,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:23,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:23,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:37:23,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:23,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410511436] [2025-03-17 06:37:23,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410511436] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:23,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:23,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 06:37:23,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038902466] [2025-03-17 06:37:23,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:24,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 06:37:24,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:24,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 06:37:24,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 06:37:24,023 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:24,024 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) [2025-03-17 06:37:24,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:24,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:24,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:24,665 INFO L124 PetriNetUnfolderBase]: 2373/3237 cut-off events. [2025-03-17 06:37:24,665 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2025-03-17 06:37:24,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 3237 events. 2373/3237 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12282 event pairs, 1692 based on Foata normal form. 0/2556 useless extension candidates. Maximal degree in co-relation 6206. Up to 3234 conditions per place. [2025-03-17 06:37:24,685 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2025-03-17 06:37:24,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 196 flow [2025-03-17 06:37:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 06:37:24,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 06:37:24,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2025-03-17 06:37:24,698 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2025-03-17 06:37:24,699 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 62 transitions. [2025-03-17 06:37:24,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 196 flow [2025-03-17 06:37:24,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-17 06:37:24,712 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 122 flow [2025-03-17 06:37:24,714 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2025-03-17 06:37:24,718 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2025-03-17 06:37:24,718 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 122 flow [2025-03-17 06:37:24,719 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) [2025-03-17 06:37:24,719 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:24,719 INFO L206 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] [2025-03-17 06:37:24,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 06:37:24,719 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)] === [2025-03-17 06:37:24,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:24,721 INFO L85 PathProgramCache]: Analyzing trace with hash -478292189, now seen corresponding path program 1 times [2025-03-17 06:37:24,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:24,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126507359] [2025-03-17 06:37:24,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:37:24,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:24,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 06:37:24,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 06:37:24,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:24,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:24,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:37:24,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:24,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126507359] [2025-03-17 06:37:24,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126507359] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:37:24,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455732535] [2025-03-17 06:37:24,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:37:24,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:37:24,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:37:24,937 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:37:24,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 06:37:25,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 06:37:25,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 06:37:25,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:25,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:25,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 06:37:25,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:37:25,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:37:25,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:37:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:37:25,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455732535] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:37:25,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:37:25,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-03-17 06:37:25,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143311836] [2025-03-17 06:37:25,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:37:25,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:37:25,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:25,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:37:25,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:37:25,178 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:25,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 122 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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) [2025-03-17 06:37:25,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:25,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:25,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:25,664 INFO L124 PetriNetUnfolderBase]: 2373/3246 cut-off events. [2025-03-17 06:37:25,664 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2025-03-17 06:37:25,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 3246 events. 2373/3246 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12264 event pairs, 1692 based on Foata normal form. 6/2573 useless extension candidates. Maximal degree in co-relation 6525. Up to 3234 conditions per place. [2025-03-17 06:37:25,681 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 38 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2025-03-17 06:37:25,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 264 flow [2025-03-17 06:37:25,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:37:25,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:37:25,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2025-03-17 06:37:25,683 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2925170068027211 [2025-03-17 06:37:25,684 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 122 flow. Second operand 6 states and 86 transitions. [2025-03-17 06:37:25,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 264 flow [2025-03-17 06:37:25,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 06:37:25,686 INFO L231 Difference]: Finished difference. Result has 47 places, 54 transitions, 212 flow [2025-03-17 06:37:25,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=47, PETRI_TRANSITIONS=54} [2025-03-17 06:37:25,687 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2025-03-17 06:37:25,687 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 54 transitions, 212 flow [2025-03-17 06:37:25,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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) [2025-03-17 06:37:25,687 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:25,687 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:25,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 06:37:25,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:37:25,889 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)] === [2025-03-17 06:37:25,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:25,890 INFO L85 PathProgramCache]: Analyzing trace with hash 2024217071, now seen corresponding path program 2 times [2025-03-17 06:37:25,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:25,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856900250] [2025-03-17 06:37:25,890 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:37:25,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:25,917 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-03-17 06:37:26,035 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 36 statements. [2025-03-17 06:37:26,035 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:37:26,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-17 06:37:27,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:27,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856900250] [2025-03-17 06:37:27,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856900250] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:27,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:27,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:37:27,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370798822] [2025-03-17 06:37:27,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:27,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:37:27,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:27,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:37:27,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:37:27,131 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:27,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-17 06:37:27,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:27,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:27,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:27,985 INFO L124 PetriNetUnfolderBase]: 3867/5443 cut-off events. [2025-03-17 06:37:27,985 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2025-03-17 06:37:27,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11022 conditions, 5443 events. 3867/5443 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 24900 event pairs, 1692 based on Foata normal form. 1/4412 useless extension candidates. Maximal degree in co-relation 10934. Up to 3132 conditions per place. [2025-03-17 06:37:28,009 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 111 selfloop transitions, 13 changer transitions 2/127 dead transitions. [2025-03-17 06:37:28,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 127 transitions, 623 flow [2025-03-17 06:37:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:37:28,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:37:28,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2025-03-17 06:37:28,011 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2025-03-17 06:37:28,011 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 212 flow. Second operand 5 states and 135 transitions. [2025-03-17 06:37:28,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 127 transitions, 623 flow [2025-03-17 06:37:28,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 127 transitions, 599 flow, removed 9 selfloop flow, removed 1 redundant places. [2025-03-17 06:37:28,015 INFO L231 Difference]: Finished difference. Result has 53 places, 66 transitions, 291 flow [2025-03-17 06:37:28,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=291, PETRI_PLACES=53, PETRI_TRANSITIONS=66} [2025-03-17 06:37:28,016 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2025-03-17 06:37:28,016 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 66 transitions, 291 flow [2025-03-17 06:37:28,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-17 06:37:28,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:28,017 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:28,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:37:28,018 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)] === [2025-03-17 06:37:28,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:28,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1928529151, now seen corresponding path program 3 times [2025-03-17 06:37:28,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:28,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366851148] [2025-03-17 06:37:28,019 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:37:28,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:28,038 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 36 statements into 3 equivalence classes. [2025-03-17 06:37:28,112 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 36 statements. [2025-03-17 06:37:28,112 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:37:28,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:29,019 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-17 06:37:29,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:29,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366851148] [2025-03-17 06:37:29,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366851148] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:29,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:29,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 06:37:29,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316086299] [2025-03-17 06:37:29,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:29,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:37:29,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:29,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:37:29,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:37:29,021 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:29,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 291 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2025-03-17 06:37:29,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:29,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:29,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:31,012 INFO L124 PetriNetUnfolderBase]: 9197/12921 cut-off events. [2025-03-17 06:37:31,013 INFO L125 PetriNetUnfolderBase]: For 6274/6274 co-relation queries the response was YES. [2025-03-17 06:37:31,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32130 conditions, 12921 events. 9197/12921 cut-off events. For 6274/6274 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 68238 event pairs, 2130 based on Foata normal form. 1/12614 useless extension candidates. Maximal degree in co-relation 32050. Up to 4719 conditions per place. [2025-03-17 06:37:31,080 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 142 selfloop transitions, 56 changer transitions 1/200 dead transitions. [2025-03-17 06:37:31,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 200 transitions, 1141 flow [2025-03-17 06:37:31,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:37:31,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:37:31,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2025-03-17 06:37:31,083 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5626822157434402 [2025-03-17 06:37:31,084 INFO L175 Difference]: Start difference. First operand has 53 places, 66 transitions, 291 flow. Second operand 7 states and 193 transitions. [2025-03-17 06:37:31,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 200 transitions, 1141 flow [2025-03-17 06:37:31,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 200 transitions, 1131 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-03-17 06:37:31,095 INFO L231 Difference]: Finished difference. Result has 62 places, 115 transitions, 763 flow [2025-03-17 06:37:31,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=763, PETRI_PLACES=62, PETRI_TRANSITIONS=115} [2025-03-17 06:37:31,095 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2025-03-17 06:37:31,095 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 115 transitions, 763 flow [2025-03-17 06:37:31,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2025-03-17 06:37:31,096 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:31,096 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:31,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:37:31,096 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)] === [2025-03-17 06:37:31,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:31,096 INFO L85 PathProgramCache]: Analyzing trace with hash 839369669, now seen corresponding path program 4 times [2025-03-17 06:37:31,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:31,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307550233] [2025-03-17 06:37:31,096 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:37:31,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:31,119 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-03-17 06:37:31,137 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 06:37:31,138 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:37:31,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-17 06:37:31,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:31,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307550233] [2025-03-17 06:37:31,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307550233] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:37:31,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799900873] [2025-03-17 06:37:31,271 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:37:31,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:37:31,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:37:31,275 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:37:31,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 06:37:31,400 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-03-17 06:37:31,443 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 06:37:31,443 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:37:31,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:31,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 06:37:31,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:37:31,500 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-17 06:37:31,501 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:37:31,541 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-17 06:37:31,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799900873] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:37:31,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:37:31,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-03-17 06:37:31,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389457866] [2025-03-17 06:37:31,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:37:31,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 06:37:31,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:31,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 06:37:31,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:37:31,543 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:31,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 115 transitions, 763 flow. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 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) [2025-03-17 06:37:31,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:31,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:31,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:32,943 INFO L124 PetriNetUnfolderBase]: 9197/12924 cut-off events. [2025-03-17 06:37:32,944 INFO L125 PetriNetUnfolderBase]: For 17547/17547 co-relation queries the response was YES. [2025-03-17 06:37:32,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38622 conditions, 12924 events. 9197/12924 cut-off events. For 17547/17547 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 66651 event pairs, 6326 based on Foata normal form. 1/12617 useless extension candidates. Maximal degree in co-relation 38526. Up to 12902 conditions per place. [2025-03-17 06:37:32,991 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 99 selfloop transitions, 18 changer transitions 0/118 dead transitions. [2025-03-17 06:37:32,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 118 transitions, 1015 flow [2025-03-17 06:37:32,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:37:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:37:32,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2025-03-17 06:37:32,993 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2536443148688047 [2025-03-17 06:37:32,993 INFO L175 Difference]: Start difference. First operand has 62 places, 115 transitions, 763 flow. Second operand 7 states and 87 transitions. [2025-03-17 06:37:32,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 118 transitions, 1015 flow [2025-03-17 06:37:33,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 118 transitions, 967 flow, removed 24 selfloop flow, removed 0 redundant places. [2025-03-17 06:37:33,031 INFO L231 Difference]: Finished difference. Result has 69 places, 118 transitions, 783 flow [2025-03-17 06:37:33,031 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=783, PETRI_PLACES=69, PETRI_TRANSITIONS=118} [2025-03-17 06:37:33,032 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2025-03-17 06:37:33,033 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 118 transitions, 783 flow [2025-03-17 06:37:33,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 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) [2025-03-17 06:37:33,033 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:33,034 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:33,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 06:37:33,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:37:33,234 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)] === [2025-03-17 06:37:33,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:33,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1551947957, now seen corresponding path program 5 times [2025-03-17 06:37:33,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:33,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25340862] [2025-03-17 06:37:33,235 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:37:33,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:33,258 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 4 equivalence classes. [2025-03-17 06:37:33,512 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 06:37:33,513 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-17 06:37:33,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-17 06:37:35,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:35,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25340862] [2025-03-17 06:37:35,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25340862] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:37:35,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605589798] [2025-03-17 06:37:35,218 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:37:35,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:37:35,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:37:35,221 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:37:35,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 06:37:35,345 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 4 equivalence classes. [2025-03-17 06:37:35,472 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 06:37:35,472 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-17 06:37:35,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:35,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 06:37:35,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:37:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-17 06:37:36,727 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:37:36,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605589798] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:36,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:37:36,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2025-03-17 06:37:36,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278671387] [2025-03-17 06:37:36,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:36,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:37:36,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:36,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:37:36,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-17 06:37:36,728 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:36,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 118 transitions, 783 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-17 06:37:36,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:36,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:36,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:38,812 INFO L124 PetriNetUnfolderBase]: 10383/14761 cut-off events. [2025-03-17 06:37:38,812 INFO L125 PetriNetUnfolderBase]: For 16166/16166 co-relation queries the response was YES. [2025-03-17 06:37:38,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41696 conditions, 14761 events. 10383/14761 cut-off events. For 16166/16166 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 79620 event pairs, 6106 based on Foata normal form. 1/14392 useless extension candidates. Maximal degree in co-relation 41579. Up to 12413 conditions per place. [2025-03-17 06:37:38,885 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 159 selfloop transitions, 6 changer transitions 8/174 dead transitions. [2025-03-17 06:37:38,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 174 transitions, 1367 flow [2025-03-17 06:37:38,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:37:38,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:37:38,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2025-03-17 06:37:38,886 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4326530612244898 [2025-03-17 06:37:38,886 INFO L175 Difference]: Start difference. First operand has 69 places, 118 transitions, 783 flow. Second operand 5 states and 106 transitions. [2025-03-17 06:37:38,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 174 transitions, 1367 flow [2025-03-17 06:37:38,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 174 transitions, 1331 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-03-17 06:37:38,933 INFO L231 Difference]: Finished difference. Result has 72 places, 121 transitions, 804 flow [2025-03-17 06:37:38,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=804, PETRI_PLACES=72, PETRI_TRANSITIONS=121} [2025-03-17 06:37:38,934 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2025-03-17 06:37:38,934 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 121 transitions, 804 flow [2025-03-17 06:37:38,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-17 06:37:38,934 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:38,934 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:38,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 06:37:39,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:37:39,138 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)] === [2025-03-17 06:37:39,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:39,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1441336667, now seen corresponding path program 6 times [2025-03-17 06:37:39,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:39,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969766690] [2025-03-17 06:37:39,139 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:37:39,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:39,157 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 39 statements into 4 equivalence classes. [2025-03-17 06:37:39,197 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 24 of 39 statements. [2025-03-17 06:37:39,198 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-17 06:37:39,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:39,851 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-17 06:37:39,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:39,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969766690] [2025-03-17 06:37:39,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969766690] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:39,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:39,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:37:39,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131813418] [2025-03-17 06:37:39,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:39,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:37:39,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:39,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:37:39,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:37:39,854 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:39,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 121 transitions, 804 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-17 06:37:39,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:39,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:39,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:41,444 INFO L124 PetriNetUnfolderBase]: 10788/15352 cut-off events. [2025-03-17 06:37:41,444 INFO L125 PetriNetUnfolderBase]: For 21034/21034 co-relation queries the response was YES. [2025-03-17 06:37:41,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44183 conditions, 15352 events. 10788/15352 cut-off events. For 21034/21034 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 84558 event pairs, 4239 based on Foata normal form. 1/14983 useless extension candidates. Maximal degree in co-relation 44092. Up to 6846 conditions per place. [2025-03-17 06:37:41,512 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 141 selfloop transitions, 43 changer transitions 2/187 dead transitions. [2025-03-17 06:37:41,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 187 transitions, 1442 flow [2025-03-17 06:37:41,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:37:41,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:37:41,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2025-03-17 06:37:41,513 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2025-03-17 06:37:41,513 INFO L175 Difference]: Start difference. First operand has 72 places, 121 transitions, 804 flow. Second operand 5 states and 131 transitions. [2025-03-17 06:37:41,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 187 transitions, 1442 flow [2025-03-17 06:37:41,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 187 transitions, 1431 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-17 06:37:41,583 INFO L231 Difference]: Finished difference. Result has 76 places, 134 transitions, 1069 flow [2025-03-17 06:37:41,583 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1069, PETRI_PLACES=76, PETRI_TRANSITIONS=134} [2025-03-17 06:37:41,584 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2025-03-17 06:37:41,584 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 134 transitions, 1069 flow [2025-03-17 06:37:41,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-17 06:37:41,584 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:41,584 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:41,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 06:37:41,585 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)] === [2025-03-17 06:37:41,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:41,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1902576135, now seen corresponding path program 7 times [2025-03-17 06:37:41,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:41,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005447529] [2025-03-17 06:37:41,586 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:37:41,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:41,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-17 06:37:41,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 06:37:41,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:41,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-17 06:37:42,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:42,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005447529] [2025-03-17 06:37:42,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005447529] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:42,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:42,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:37:42,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665190057] [2025-03-17 06:37:42,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:42,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:37:42,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:42,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:37:42,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:37:42,462 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:42,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 134 transitions, 1069 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-17 06:37:42,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:42,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:42,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:44,728 INFO L124 PetriNetUnfolderBase]: 14793/21009 cut-off events. [2025-03-17 06:37:44,728 INFO L125 PetriNetUnfolderBase]: For 36396/36396 co-relation queries the response was YES. [2025-03-17 06:37:44,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63213 conditions, 21009 events. 14793/21009 cut-off events. For 36396/36396 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 121683 event pairs, 4299 based on Foata normal form. 1/20410 useless extension candidates. Maximal degree in co-relation 63108. Up to 9482 conditions per place. [2025-03-17 06:37:44,844 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 189 selfloop transitions, 53 changer transitions 2/245 dead transitions. [2025-03-17 06:37:44,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 245 transitions, 2043 flow [2025-03-17 06:37:44,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:37:44,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:37:44,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2025-03-17 06:37:44,845 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5680272108843537 [2025-03-17 06:37:44,845 INFO L175 Difference]: Start difference. First operand has 76 places, 134 transitions, 1069 flow. Second operand 6 states and 167 transitions. [2025-03-17 06:37:44,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 245 transitions, 2043 flow [2025-03-17 06:37:44,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 245 transitions, 1983 flow, removed 9 selfloop flow, removed 1 redundant places. [2025-03-17 06:37:44,976 INFO L231 Difference]: Finished difference. Result has 85 places, 154 transitions, 1406 flow [2025-03-17 06:37:44,976 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1406, PETRI_PLACES=85, PETRI_TRANSITIONS=154} [2025-03-17 06:37:44,976 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2025-03-17 06:37:44,976 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 154 transitions, 1406 flow [2025-03-17 06:37:44,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-17 06:37:44,977 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:44,977 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:44,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 06:37:44,977 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)] === [2025-03-17 06:37:44,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:44,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1929906955, now seen corresponding path program 8 times [2025-03-17 06:37:44,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:44,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907479667] [2025-03-17 06:37:44,978 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:37:44,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:44,991 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-03-17 06:37:45,013 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 39 statements. [2025-03-17 06:37:45,013 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:37:45,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:45,472 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-17 06:37:45,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:45,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907479667] [2025-03-17 06:37:45,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907479667] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:45,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:45,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:37:45,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576774880] [2025-03-17 06:37:45,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:45,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:37:45,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:45,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:37:45,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:37:45,474 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:45,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 154 transitions, 1406 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-17 06:37:45,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:45,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:45,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:49,042 INFO L124 PetriNetUnfolderBase]: 19942/28308 cut-off events. [2025-03-17 06:37:49,042 INFO L125 PetriNetUnfolderBase]: For 70142/70142 co-relation queries the response was YES. [2025-03-17 06:37:49,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92032 conditions, 28308 events. 19942/28308 cut-off events. For 70142/70142 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 170433 event pairs, 8321 based on Foata normal form. 1/28309 useless extension candidates. Maximal degree in co-relation 91923. Up to 13782 conditions per place. [2025-03-17 06:37:49,234 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 203 selfloop transitions, 72 changer transitions 2/278 dead transitions. [2025-03-17 06:37:49,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 278 transitions, 2851 flow [2025-03-17 06:37:49,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:37:49,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:37:49,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2025-03-17 06:37:49,235 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2025-03-17 06:37:49,235 INFO L175 Difference]: Start difference. First operand has 85 places, 154 transitions, 1406 flow. Second operand 5 states and 129 transitions. [2025-03-17 06:37:49,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 278 transitions, 2851 flow [2025-03-17 06:37:49,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 278 transitions, 2841 flow, removed 5 selfloop flow, removed 0 redundant places. [2025-03-17 06:37:49,555 INFO L231 Difference]: Finished difference. Result has 93 places, 211 transitions, 2371 flow [2025-03-17 06:37:49,555 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2371, PETRI_PLACES=93, PETRI_TRANSITIONS=211} [2025-03-17 06:37:49,555 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2025-03-17 06:37:49,555 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 211 transitions, 2371 flow [2025-03-17 06:37:49,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2025-03-17 06:37:49,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:49,556 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:49,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 06:37:49,556 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)] === [2025-03-17 06:37:49,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:49,556 INFO L85 PathProgramCache]: Analyzing trace with hash 445283449, now seen corresponding path program 9 times [2025-03-17 06:37:49,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:49,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517840198] [2025-03-17 06:37:49,556 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:37:49,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:49,573 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 4 equivalence classes. [2025-03-17 06:37:49,598 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 39 statements. [2025-03-17 06:37:49,598 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:37:49,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-17 06:37:50,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:50,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517840198] [2025-03-17 06:37:50,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517840198] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:50,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:50,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 06:37:50,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338519524] [2025-03-17 06:37:50,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:50,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:37:50,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:50,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:37:50,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:37:50,296 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:50,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 211 transitions, 2371 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2025-03-17 06:37:50,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:50,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:50,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:54,149 INFO L124 PetriNetUnfolderBase]: 20496/29114 cut-off events. [2025-03-17 06:37:54,149 INFO L125 PetriNetUnfolderBase]: For 104916/104916 co-relation queries the response was YES. [2025-03-17 06:37:54,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102936 conditions, 29114 events. 20496/29114 cut-off events. For 104916/104916 co-relation queries the response was YES. Maximal size of possible extension queue 1133. Compared 176526 event pairs, 6513 based on Foata normal form. 1/29115 useless extension candidates. Maximal degree in co-relation 102823. Up to 16642 conditions per place. [2025-03-17 06:37:54,368 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 257 selfloop transitions, 71 changer transitions 5/334 dead transitions. [2025-03-17 06:37:54,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 334 transitions, 3927 flow [2025-03-17 06:37:54,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:37:54,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:37:54,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2025-03-17 06:37:54,369 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2025-03-17 06:37:54,369 INFO L175 Difference]: Start difference. First operand has 93 places, 211 transitions, 2371 flow. Second operand 6 states and 153 transitions. [2025-03-17 06:37:54,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 334 transitions, 3927 flow [2025-03-17 06:37:54,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 334 transitions, 3907 flow, removed 10 selfloop flow, removed 0 redundant places. [2025-03-17 06:37:54,763 INFO L231 Difference]: Finished difference. Result has 103 places, 237 transitions, 3030 flow [2025-03-17 06:37:54,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3030, PETRI_PLACES=103, PETRI_TRANSITIONS=237} [2025-03-17 06:37:54,764 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2025-03-17 06:37:54,764 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 237 transitions, 3030 flow [2025-03-17 06:37:54,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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) [2025-03-17 06:37:54,764 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:54,764 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:54,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 06:37:54,765 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)] === [2025-03-17 06:37:54,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:54,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1268771569, now seen corresponding path program 1 times [2025-03-17 06:37:54,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:54,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068242270] [2025-03-17 06:37:54,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:37:54,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:54,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-17 06:37:54,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-17 06:37:54,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:54,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-17 06:37:54,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:54,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068242270] [2025-03-17 06:37:54,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068242270] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:54,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:54,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 06:37:54,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338963225] [2025-03-17 06:37:54,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:54,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 06:37:54,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:54,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 06:37:54,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 06:37:54,884 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:54,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 237 transitions, 3030 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:54,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:54,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:54,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:38:00,680 INFO L124 PetriNetUnfolderBase]: 25162/35653 cut-off events. [2025-03-17 06:38:00,680 INFO L125 PetriNetUnfolderBase]: For 170151/170151 co-relation queries the response was YES. [2025-03-17 06:38:00,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132224 conditions, 35653 events. 25162/35653 cut-off events. For 170151/170151 co-relation queries the response was YES. Maximal size of possible extension queue 1275. Compared 219897 event pairs, 15016 based on Foata normal form. 684/36337 useless extension candidates. Maximal degree in co-relation 132106. Up to 28577 conditions per place. [2025-03-17 06:38:00,945 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 276 selfloop transitions, 16 changer transitions 1/294 dead transitions. [2025-03-17 06:38:00,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 294 transitions, 4185 flow [2025-03-17 06:38:00,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 06:38:00,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 06:38:00,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2025-03-17 06:38:00,946 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2025-03-17 06:38:00,946 INFO L175 Difference]: Start difference. First operand has 103 places, 237 transitions, 3030 flow. Second operand 3 states and 78 transitions. [2025-03-17 06:38:00,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 294 transitions, 4185 flow [2025-03-17 06:38:01,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 294 transitions, 4155 flow, removed 15 selfloop flow, removed 0 redundant places. [2025-03-17 06:38:01,729 INFO L231 Difference]: Finished difference. Result has 106 places, 239 transitions, 3074 flow [2025-03-17 06:38:01,729 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2990, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3074, PETRI_PLACES=106, PETRI_TRANSITIONS=239} [2025-03-17 06:38:01,729 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2025-03-17 06:38:01,729 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 239 transitions, 3074 flow [2025-03-17 06:38:01,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:38:01,729 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:38:01,729 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:38:01,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 06:38:01,730 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)] === [2025-03-17 06:38:01,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:38:01,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1517594990, now seen corresponding path program 1 times [2025-03-17 06:38:01,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:38:01,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270171717] [2025-03-17 06:38:01,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:38:01,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:38:01,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-17 06:38:01,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-17 06:38:01,750 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:38:01,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:38:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-17 06:38:01,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:38:01,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270171717] [2025-03-17 06:38:01,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270171717] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:38:01,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:38:01,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:38:01,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596747947] [2025-03-17 06:38:01,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:38:01,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:38:01,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:38:01,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:38:01,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:38:01,916 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:38:01,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 239 transitions, 3074 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2025-03-17 06:38:01,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:38:01,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:38:01,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand