./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:49:50,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:49:50,957 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:49:50,962 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:49:50,965 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:49:50,984 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:49:50,985 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:49:50,985 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:49:50,985 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:49:50,985 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:49:50,986 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:49:50,986 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:49:50,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:49:50,986 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:49:50,986 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:49:50,986 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:49:50,986 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:49:50,986 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:49:50,987 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:49:50,987 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:49:50,987 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:49:50,987 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:49:50,987 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:49:50,987 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:49:50,987 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:49:50,987 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:49:50,987 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:49:50,988 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:49:50,988 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:49:50,988 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:49:50,988 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:49:50,988 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:49:50,988 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:49:50,988 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:49:50,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:49:50,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:49:50,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:49:50,989 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:49:50,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:49:50,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:49:50,989 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:49:50,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:49:50,989 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:49:50,989 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:49:50,989 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:49:50,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:49:50,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:49:50,990 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:49:50,990 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:49:50,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:49:50,990 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-jdk21/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 ! overflow) ) 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 -> 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 [2025-01-10 06:49:51,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:49:51,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:49:51,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:49:51,314 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:49:51,314 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:49:51,315 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2025-01-10 06:49:52,627 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c4368df1f/88f12dbf568b464e9f3626787df636ee/FLAGe2c2efa54 [2025-01-10 06:49:52,906 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:49:52,906 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2025-01-10 06:49:52,917 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c4368df1f/88f12dbf568b464e9f3626787df636ee/FLAGe2c2efa54 [2025-01-10 06:49:52,936 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c4368df1f/88f12dbf568b464e9f3626787df636ee [2025-01-10 06:49:52,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:49:52,940 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:49:52,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:49:52,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:49:52,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:49:52,946 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:49:52" (1/1) ... [2025-01-10 06:49:52,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50a2032c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:52, skipping insertion in model container [2025-01-10 06:49:52,947 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:49:52" (1/1) ... [2025-01-10 06:49:52,962 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:49:53,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:49:53,150 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:49:53,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:49:53,200 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:49:53,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:53 WrapperNode [2025-01-10 06:49:53,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:49:53,202 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:49:53,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:49:53,202 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:49:53,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:53" (1/1) ... [2025-01-10 06:49:53,212 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:53" (1/1) ... [2025-01-10 06:49:53,236 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 350 [2025-01-10 06:49:53,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:49:53,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:49:53,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:49:53,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:49:53,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:53" (1/1) ... [2025-01-10 06:49:53,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:53" (1/1) ... [2025-01-10 06:49:53,255 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:53" (1/1) ... [2025-01-10 06:49:53,270 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-01-10 06:49:53,273 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:53" (1/1) ... [2025-01-10 06:49:53,273 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:53" (1/1) ... [2025-01-10 06:49:53,279 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:53" (1/1) ... [2025-01-10 06:49:53,281 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:53" (1/1) ... [2025-01-10 06:49:53,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:53" (1/1) ... [2025-01-10 06:49:53,288 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:53" (1/1) ... [2025-01-10 06:49:53,289 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:53" (1/1) ... [2025-01-10 06:49:53,293 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:49:53,293 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:49:53,293 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:49:53,293 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:49:53,294 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:53" (1/1) ... [2025-01-10 06:49:53,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:49:53,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:49:53,325 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 06:49:53,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 06:49:53,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:49:53,344 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 06:49:53,344 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 06:49:53,344 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 06:49:53,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 06:49:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-10 06:49:53,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-10 06:49:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:49:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:49:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 06:49:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 06:49:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 06:49:53,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:49:53,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:49:53,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 06:49:53,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 06:49:53,347 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 06:49:53,445 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:49:53,447 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:49:53,897 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:49:53,897 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:49:54,180 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:49:54,181 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2025-01-10 06:49:54,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:49:54 BoogieIcfgContainer [2025-01-10 06:49:54,181 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:49:54,183 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:49:54,183 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:49:54,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:49:54,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:49:52" (1/3) ... [2025-01-10 06:49:54,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190a2699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:49:54, skipping insertion in model container [2025-01-10 06:49:54,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:49:53" (2/3) ... [2025-01-10 06:49:54,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190a2699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:49:54, skipping insertion in model container [2025-01-10 06:49:54,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:49:54" (3/3) ... [2025-01-10 06:49:54,188 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2025-01-10 06:49:54,198 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:49:54,203 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-name-comparator-trans.wvr.c that has 4 procedures, 98 locations, 1 initial locations, 4 loop locations, and 26 error locations. [2025-01-10 06:49:54,203 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:49:54,262 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-10 06:49:54,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 113 transitions, 247 flow [2025-01-10 06:49:54,353 INFO L124 PetriNetUnfolderBase]: 16/110 cut-off events. [2025-01-10 06:49:54,354 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 06:49:54,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 110 events. 16/110 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 448 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2025-01-10 06:49:54,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 113 transitions, 247 flow [2025-01-10 06:49:54,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 108 transitions, 231 flow [2025-01-10 06:49:54,366 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:49:54,373 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;@140cd5a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:49:54,374 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2025-01-10 06:49:54,377 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:49:54,377 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 06:49:54,378 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:49:54,378 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:49:54,378 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 06:49:54,378 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-01-10 06:49:54,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:49:54,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1004789, now seen corresponding path program 1 times [2025-01-10 06:49:54,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:49:54,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053593225] [2025-01-10 06:49:54,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:49:54,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:49:54,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 06:49:54,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 06:49:54,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:49:54,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:49:54,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:49:54,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:49:54,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053593225] [2025-01-10 06:49:54,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053593225] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:49:54,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:49:54,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:49:54,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654056003] [2025-01-10 06:49:54,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:49:54,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:49:54,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:49:54,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:49:54,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:49:54,618 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-01-10 06:49:54,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 108 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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) [2025-01-10 06:49:54,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:49:54,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-01-10 06:49:54,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:49:56,427 INFO L124 PetriNetUnfolderBase]: 12542/23557 cut-off events. [2025-01-10 06:49:56,428 INFO L125 PetriNetUnfolderBase]: For 529/529 co-relation queries the response was YES. [2025-01-10 06:49:56,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40543 conditions, 23557 events. 12542/23557 cut-off events. For 529/529 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 210507 event pairs, 8652 based on Foata normal form. 1/18441 useless extension candidates. Maximal degree in co-relation 39200. Up to 16540 conditions per place. [2025-01-10 06:49:56,570 INFO L140 encePairwiseOnDemand]: 104/113 looper letters, 55 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2025-01-10 06:49:56,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 108 transitions, 349 flow [2025-01-10 06:49:56,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:49:56,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:49:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2025-01-10 06:49:56,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6017699115044248 [2025-01-10 06:49:56,581 INFO L175 Difference]: Start difference. First operand has 102 places, 108 transitions, 231 flow. Second operand 4 states and 272 transitions. [2025-01-10 06:49:56,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 108 transitions, 349 flow [2025-01-10 06:49:56,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 108 transitions, 340 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-10 06:49:56,597 INFO L231 Difference]: Finished difference. Result has 102 places, 108 transitions, 245 flow [2025-01-10 06:49:56,599 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=245, PETRI_PLACES=102, PETRI_TRANSITIONS=108} [2025-01-10 06:49:56,602 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 0 predicate places. [2025-01-10 06:49:56,602 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 108 transitions, 245 flow [2025-01-10 06:49:56,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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) [2025-01-10 06:49:56,602 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:49:56,602 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-10 06:49:56,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:49:56,603 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-01-10 06:49:56,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:49:56,604 INFO L85 PathProgramCache]: Analyzing trace with hash -130048173, now seen corresponding path program 1 times [2025-01-10 06:49:56,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:49:56,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227094851] [2025-01-10 06:49:56,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:49:56,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:49:56,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:49:56,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:49:56,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:49:56,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:49:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:49:56,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:49:56,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227094851] [2025-01-10 06:49:56,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227094851] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:49:56,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576004002] [2025-01-10 06:49:56,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:49:56,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:49:56,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:49:56,728 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:49:56,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 06:49:56,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:49:56,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:49:56,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:49:56,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:49:56,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:49:56,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:49:56,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:49:56,830 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:49:56,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576004002] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:49:56,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:49:56,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-01-10 06:49:56,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672363098] [2025-01-10 06:49:56,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:49:56,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:49:56,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:49:56,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:49:56,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:49:56,839 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-01-10 06:49:56,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 108 transitions, 245 flow. Second operand has 6 states, 6 states have (on average 52.833333333333336) internal successors, (317), 6 states have internal predecessors, (317), 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) [2025-01-10 06:49:56,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:49:56,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-01-10 06:49:56,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:49:58,375 INFO L124 PetriNetUnfolderBase]: 12542/23556 cut-off events. [2025-01-10 06:49:58,375 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2025-01-10 06:49:58,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40390 conditions, 23556 events. 12542/23556 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 210476 event pairs, 8652 based on Foata normal form. 1/18441 useless extension candidates. Maximal degree in co-relation 40363. Up to 16535 conditions per place. [2025-01-10 06:49:58,498 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 51 selfloop transitions, 7 changer transitions 0/107 dead transitions. [2025-01-10 06:49:58,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 107 transitions, 357 flow [2025-01-10 06:49:58,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:49:58,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:49:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 371 transitions. [2025-01-10 06:49:58,503 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5471976401179941 [2025-01-10 06:49:58,503 INFO L175 Difference]: Start difference. First operand has 102 places, 108 transitions, 245 flow. Second operand 6 states and 371 transitions. [2025-01-10 06:49:58,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 107 transitions, 357 flow [2025-01-10 06:49:58,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 107 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:49:58,507 INFO L231 Difference]: Finished difference. Result has 105 places, 107 transitions, 252 flow [2025-01-10 06:49:58,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=105, PETRI_TRANSITIONS=107} [2025-01-10 06:49:58,508 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 3 predicate places. [2025-01-10 06:49:58,508 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 107 transitions, 252 flow [2025-01-10 06:49:58,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.833333333333336) internal successors, (317), 6 states have internal predecessors, (317), 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) [2025-01-10 06:49:58,509 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:49:58,509 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-01-10 06:49:58,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 06:49:58,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:49:58,713 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-01-10 06:49:58,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:49:58,714 INFO L85 PathProgramCache]: Analyzing trace with hash 263474995, now seen corresponding path program 1 times [2025-01-10 06:49:58,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:49:58,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674098713] [2025-01-10 06:49:58,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:49:58,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:49:58,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:49:58,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:49:58,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:49:58,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:49:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:49:58,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:49:58,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674098713] [2025-01-10 06:49:58,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674098713] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:49:58,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574259958] [2025-01-10 06:49:58,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:49:58,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:49:58,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:49:58,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:49:58,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 06:49:58,884 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:49:58,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:49:58,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:49:58,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:49:58,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:49:58,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:49:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:49:58,915 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:49:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:49:58,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574259958] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:49:58,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:49:58,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-01-10 06:49:58,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759211596] [2025-01-10 06:49:58,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:49:58,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:49:58,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:49:58,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:49:58,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:49:58,965 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-01-10 06:49:58,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 107 transitions, 252 flow. Second operand has 12 states, 12 states have (on average 53.083333333333336) internal successors, (637), 12 states have internal predecessors, (637), 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) [2025-01-10 06:49:58,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:49:58,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-01-10 06:49:58,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:50:00,297 INFO L124 PetriNetUnfolderBase]: 12545/23568 cut-off events. [2025-01-10 06:50:00,298 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2025-01-10 06:50:00,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40434 conditions, 23568 events. 12545/23568 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 210717 event pairs, 8652 based on Foata normal form. 3/18453 useless extension candidates. Maximal degree in co-relation 40364. Up to 16542 conditions per place. [2025-01-10 06:50:00,485 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 54 selfloop transitions, 13 changer transitions 0/116 dead transitions. [2025-01-10 06:50:00,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 440 flow [2025-01-10 06:50:00,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:50:00,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:50:00,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 590 transitions. [2025-01-10 06:50:00,491 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5221238938053098 [2025-01-10 06:50:00,492 INFO L175 Difference]: Start difference. First operand has 105 places, 107 transitions, 252 flow. Second operand 10 states and 590 transitions. [2025-01-10 06:50:00,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 440 flow [2025-01-10 06:50:00,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 116 transitions, 394 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-01-10 06:50:00,494 INFO L231 Difference]: Finished difference. Result has 112 places, 116 transitions, 304 flow [2025-01-10 06:50:00,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=304, PETRI_PLACES=112, PETRI_TRANSITIONS=116} [2025-01-10 06:50:00,495 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2025-01-10 06:50:00,495 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 116 transitions, 304 flow [2025-01-10 06:50:00,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 53.083333333333336) internal successors, (637), 12 states have internal predecessors, (637), 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) [2025-01-10 06:50:00,496 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:50:00,496 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:50:00,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 06:50:00,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:50:00,700 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-01-10 06:50:00,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:50:00,701 INFO L85 PathProgramCache]: Analyzing trace with hash 404861107, now seen corresponding path program 1 times [2025-01-10 06:50:00,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:50:00,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109234408] [2025-01-10 06:50:00,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:50:00,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:50:00,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:50:00,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:50:00,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:50:00,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:50:00,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:50:00,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:50:00,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109234408] [2025-01-10 06:50:00,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109234408] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:50:00,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:50:00,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:50:00,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429549923] [2025-01-10 06:50:00,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:50:00,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:50:00,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:50:00,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:50:00,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:50:00,826 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-01-10 06:50:00,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 116 transitions, 304 flow. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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) [2025-01-10 06:50:00,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:50:00,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-01-10 06:50:00,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:50:03,182 INFO L124 PetriNetUnfolderBase]: 27152/48898 cut-off events. [2025-01-10 06:50:03,183 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2025-01-10 06:50:03,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85443 conditions, 48898 events. 27152/48898 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 2170. Compared 462297 event pairs, 11234 based on Foata normal form. 366/39885 useless extension candidates. Maximal degree in co-relation 85409. Up to 20438 conditions per place. [2025-01-10 06:50:03,432 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 146 selfloop transitions, 3 changer transitions 0/197 dead transitions. [2025-01-10 06:50:03,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 197 transitions, 772 flow [2025-01-10 06:50:03,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:50:03,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:50:03,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2025-01-10 06:50:03,434 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7676991150442478 [2025-01-10 06:50:03,434 INFO L175 Difference]: Start difference. First operand has 112 places, 116 transitions, 304 flow. Second operand 4 states and 347 transitions. [2025-01-10 06:50:03,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 197 transitions, 772 flow [2025-01-10 06:50:03,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 197 transitions, 761 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-01-10 06:50:03,437 INFO L231 Difference]: Finished difference. Result has 115 places, 118 transitions, 315 flow [2025-01-10 06:50:03,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=315, PETRI_PLACES=115, PETRI_TRANSITIONS=118} [2025-01-10 06:50:03,438 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 13 predicate places. [2025-01-10 06:50:03,438 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 118 transitions, 315 flow [2025-01-10 06:50:03,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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) [2025-01-10 06:50:03,438 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:50:03,438 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:50:03,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 06:50:03,439 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-01-10 06:50:03,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:50:03,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1092919910, now seen corresponding path program 1 times [2025-01-10 06:50:03,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:50:03,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464114316] [2025-01-10 06:50:03,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:50:03,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:50:03,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 06:50:03,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 06:50:03,449 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:50:03,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:50:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:50:03,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:50:03,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464114316] [2025-01-10 06:50:03,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464114316] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:50:03,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:50:03,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:50:03,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187249434] [2025-01-10 06:50:03,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:50:03,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:50:03,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:50:03,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:50:03,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:50:03,522 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-01-10 06:50:03,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 118 transitions, 315 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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) [2025-01-10 06:50:03,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:50:03,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-01-10 06:50:03,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:50:08,382 INFO L124 PetriNetUnfolderBase]: 51761/93130 cut-off events. [2025-01-10 06:50:08,383 INFO L125 PetriNetUnfolderBase]: For 6298/7444 co-relation queries the response was YES. [2025-01-10 06:50:08,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167076 conditions, 93130 events. 51761/93130 cut-off events. For 6298/7444 co-relation queries the response was YES. Maximal size of possible extension queue 3829. Compared 956605 event pairs, 21541 based on Foata normal form. 726/77107 useless extension candidates. Maximal degree in co-relation 167040. Up to 38506 conditions per place. [2025-01-10 06:50:08,903 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 149 selfloop transitions, 3 changer transitions 0/200 dead transitions. [2025-01-10 06:50:08,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 200 transitions, 818 flow [2025-01-10 06:50:08,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:50:08,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:50:08,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2025-01-10 06:50:08,905 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7610619469026548 [2025-01-10 06:50:08,905 INFO L175 Difference]: Start difference. First operand has 115 places, 118 transitions, 315 flow. Second operand 4 states and 344 transitions. [2025-01-10 06:50:08,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 200 transitions, 818 flow [2025-01-10 06:50:08,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 200 transitions, 812 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:50:08,910 INFO L231 Difference]: Finished difference. Result has 119 places, 120 transitions, 335 flow [2025-01-10 06:50:08,911 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=335, PETRI_PLACES=119, PETRI_TRANSITIONS=120} [2025-01-10 06:50:08,911 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 17 predicate places. [2025-01-10 06:50:08,911 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 120 transitions, 335 flow [2025-01-10 06:50:08,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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) [2025-01-10 06:50:08,911 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:50:08,911 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:50:08,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 06:50:08,912 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-01-10 06:50:08,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:50:08,912 INFO L85 PathProgramCache]: Analyzing trace with hash 949062660, now seen corresponding path program 1 times [2025-01-10 06:50:08,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:50:08,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164655708] [2025-01-10 06:50:08,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:50:08,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:50:08,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:50:08,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:50:08,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:50:08,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:50:08,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:50:08,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:50:08,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164655708] [2025-01-10 06:50:08,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164655708] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:50:08,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:50:08,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:50:08,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096853328] [2025-01-10 06:50:08,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:50:08,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:50:08,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:50:08,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:50:08,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:50:08,954 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 113 [2025-01-10 06:50:08,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 120 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2025-01-10 06:50:08,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:50:08,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 113 [2025-01-10 06:50:08,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:50:13,163 INFO L124 PetriNetUnfolderBase]: 43409/71809 cut-off events. [2025-01-10 06:50:13,164 INFO L125 PetriNetUnfolderBase]: For 8350/9794 co-relation queries the response was YES. [2025-01-10 06:50:13,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139556 conditions, 71809 events. 43409/71809 cut-off events. For 8350/9794 co-relation queries the response was YES. Maximal size of possible extension queue 2509. Compared 641028 event pairs, 17302 based on Foata normal form. 0/62082 useless extension candidates. Maximal degree in co-relation 139518. Up to 31255 conditions per place. [2025-01-10 06:50:13,684 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 181 selfloop transitions, 4 changer transitions 0/235 dead transitions. [2025-01-10 06:50:13,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 235 transitions, 990 flow [2025-01-10 06:50:13,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:50:13,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:50:13,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2025-01-10 06:50:13,687 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7716814159292036 [2025-01-10 06:50:13,687 INFO L175 Difference]: Start difference. First operand has 119 places, 120 transitions, 335 flow. Second operand 5 states and 436 transitions. [2025-01-10 06:50:13,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 235 transitions, 990 flow [2025-01-10 06:50:13,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 235 transitions, 982 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:50:13,770 INFO L231 Difference]: Finished difference. Result has 125 places, 122 transitions, 358 flow [2025-01-10 06:50:13,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2025-01-10 06:50:13,771 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 23 predicate places. [2025-01-10 06:50:13,771 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 358 flow [2025-01-10 06:50:13,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2025-01-10 06:50:13,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:50:13,771 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:50:13,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 06:50:13,772 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-01-10 06:50:13,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:50:13,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1310130584, now seen corresponding path program 1 times [2025-01-10 06:50:13,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:50:13,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723228910] [2025-01-10 06:50:13,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:50:13,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:50:13,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:50:13,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:50:13,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:50:13,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:50:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:50:13,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:50:13,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723228910] [2025-01-10 06:50:13,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723228910] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:50:13,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:50:13,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:50:13,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250320810] [2025-01-10 06:50:13,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:50:13,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:50:13,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:50:13,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:50:13,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:50:13,823 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-01-10 06:50:13,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 122 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2025-01-10 06:50:13,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:50:13,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-01-10 06:50:13,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:50:22,468 INFO L124 PetriNetUnfolderBase]: 83876/148890 cut-off events. [2025-01-10 06:50:22,468 INFO L125 PetriNetUnfolderBase]: For 37538/41497 co-relation queries the response was YES. [2025-01-10 06:50:23,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288639 conditions, 148890 events. 83876/148890 cut-off events. For 37538/41497 co-relation queries the response was YES. Maximal size of possible extension queue 5161. Compared 1561204 event pairs, 37665 based on Foata normal form. 1181/127880 useless extension candidates. Maximal degree in co-relation 288599. Up to 63586 conditions per place. [2025-01-10 06:50:23,758 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 158 selfloop transitions, 3 changer transitions 0/209 dead transitions. [2025-01-10 06:50:23,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 209 transitions, 948 flow [2025-01-10 06:50:23,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:50:23,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:50:23,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 341 transitions. [2025-01-10 06:50:23,761 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.754424778761062 [2025-01-10 06:50:23,761 INFO L175 Difference]: Start difference. First operand has 125 places, 122 transitions, 358 flow. Second operand 4 states and 341 transitions. [2025-01-10 06:50:23,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 209 transitions, 948 flow [2025-01-10 06:50:23,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 209 transitions, 948 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:50:23,790 INFO L231 Difference]: Finished difference. Result has 130 places, 124 transitions, 380 flow [2025-01-10 06:50:23,791 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=380, PETRI_PLACES=130, PETRI_TRANSITIONS=124} [2025-01-10 06:50:23,791 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 28 predicate places. [2025-01-10 06:50:23,791 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 124 transitions, 380 flow [2025-01-10 06:50:23,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2025-01-10 06:50:23,791 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:50:23,792 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:50:23,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 06:50:23,792 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-01-10 06:50:23,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:50:23,792 INFO L85 PathProgramCache]: Analyzing trace with hash -609458677, now seen corresponding path program 1 times [2025-01-10 06:50:23,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:50:23,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281092236] [2025-01-10 06:50:23,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:50:23,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:50:23,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:50:23,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:50:23,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:50:23,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:50:23,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 06:50:23,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:50:23,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281092236] [2025-01-10 06:50:23,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281092236] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:50:23,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:50:23,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:50:23,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004014043] [2025-01-10 06:50:23,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:50:23,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:50:23,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:50:23,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:50:23,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:50:23,842 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 113 [2025-01-10 06:50:23,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 124 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2025-01-10 06:50:23,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:50:23,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 113 [2025-01-10 06:50:23,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand