./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0371ac-2ff4-49d7-ad5b-29805196596c/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0371ac-2ff4-49d7-ad5b-29805196596c/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0371ac-2ff4-49d7-ad5b-29805196596c/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0371ac-2ff4-49d7-ad5b-29805196596c/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0371ac-2ff4-49d7-ad5b-29805196596c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0371ac-2ff4-49d7-ad5b-29805196596c/bin/uautomizer-verify-LYvppIcaGC --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 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 02:02:45,461 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 02:02:45,566 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0371ac-2ff4-49d7-ad5b-29805196596c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-24 02:02:45,579 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 02:02:45,580 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 02:02:45,617 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 02:02:45,619 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 02:02:45,620 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 02:02:45,620 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 02:02:45,621 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 02:02:45,622 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 02:02:45,622 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 02:02:45,622 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 02:02:45,623 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 02:02:45,623 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 02:02:45,624 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 02:02:45,624 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 02:02:45,624 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 02:02:45,624 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 02:02:45,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 02:02:45,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 02:02:45,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 02:02:45,625 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 02:02:45,625 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 02:02:45,625 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 02:02:45,625 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 02:02:45,625 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 02:02:45,625 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 02:02:45,626 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 02:02:45,626 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 02:02:45,626 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 02:02:45,626 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:02:45,626 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:02:45,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:02:45,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:02:45,626 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 02:02:45,626 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:02:45,626 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:02:45,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:02:45,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:02:45,627 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 02:02:45,627 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 02:02:45,627 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 02:02:45,627 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 02:02:45,627 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 02:02:45,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 02:02:45,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 02:02:45,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 02:02:45,629 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 02:02:45,629 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 02:02:45,629 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0371ac-2ff4-49d7-ad5b-29805196596c/bin/uautomizer-verify-LYvppIcaGC 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 -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 [2024-11-24 02:02:45,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 02:02:46,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 02:02:46,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 02:02:46,018 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 02:02:46,019 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 02:02:46,020 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0371ac-2ff4-49d7-ad5b-29805196596c/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-11-24 02:02:49,342 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0371ac-2ff4-49d7-ad5b-29805196596c/bin/uautomizer-verify-LYvppIcaGC/data/e4c60186d/497649740ded48808633517bbc372e29/FLAGee127b75a [2024-11-24 02:02:49,776 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 02:02:49,776 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0371ac-2ff4-49d7-ad5b-29805196596c/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-11-24 02:02:49,791 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0371ac-2ff4-49d7-ad5b-29805196596c/bin/uautomizer-verify-LYvppIcaGC/data/e4c60186d/497649740ded48808633517bbc372e29/FLAGee127b75a [2024-11-24 02:02:49,809 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0371ac-2ff4-49d7-ad5b-29805196596c/bin/uautomizer-verify-LYvppIcaGC/data/e4c60186d/497649740ded48808633517bbc372e29 [2024-11-24 02:02:49,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 02:02:49,814 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 02:02:49,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 02:02:49,816 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 02:02:49,821 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 02:02:49,822 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:02:49" (1/1) ... [2024-11-24 02:02:49,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d7e86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:49, skipping insertion in model container [2024-11-24 02:02:49,824 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:02:49" (1/1) ... [2024-11-24 02:02:49,858 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 02:02:50,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:02:50,272 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 02:02:50,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:02:50,403 INFO L204 MainTranslator]: Completed translation [2024-11-24 02:02:50,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:50 WrapperNode [2024-11-24 02:02:50,404 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 02:02:50,405 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 02:02:50,405 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 02:02:50,406 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 02:02:50,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:50" (1/1) ... [2024-11-24 02:02:50,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:50" (1/1) ... [2024-11-24 02:02:50,469 INFO L138 Inliner]: procedures = 172, calls = 61, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 154 [2024-11-24 02:02:50,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 02:02:50,470 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 02:02:50,470 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 02:02:50,470 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 02:02:50,480 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:50" (1/1) ... [2024-11-24 02:02:50,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:50" (1/1) ... [2024-11-24 02:02:50,484 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:50" (1/1) ... [2024-11-24 02:02:50,502 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-11-24 02:02:50,502 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:50" (1/1) ... [2024-11-24 02:02:50,502 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:50" (1/1) ... [2024-11-24 02:02:50,521 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:50" (1/1) ... [2024-11-24 02:02:50,526 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:50" (1/1) ... [2024-11-24 02:02:50,535 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:50" (1/1) ... [2024-11-24 02:02:50,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:50" (1/1) ... [2024-11-24 02:02:50,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:50" (1/1) ... [2024-11-24 02:02:50,552 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 02:02:50,553 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 02:02:50,554 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 02:02:50,554 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 02:02:50,556 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:50" (1/1) ... [2024-11-24 02:02:50,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:02:50,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0371ac-2ff4-49d7-ad5b-29805196596c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:02:50,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0371ac-2ff4-49d7-ad5b-29805196596c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 02:02:50,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e0371ac-2ff4-49d7-ad5b-29805196596c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 02:02:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 02:02:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 02:02:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 02:02:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 02:02:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-24 02:02:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 02:02:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 02:02:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 02:02:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 02:02:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-24 02:02:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-24 02:02:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 02:02:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 02:02:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-24 02:02:50,636 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-24 02:02:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 02:02:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-11-24 02:02:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 02:02:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 02:02:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 02:02:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 02:02:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 02:02:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-24 02:02:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 02:02:50,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 02:02:50,640 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 02:02:50,835 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 02:02:50,837 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 02:02:51,413 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 02:02:51,413 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 02:02:51,787 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 02:02:51,788 INFO L312 CfgBuilder]: Removed 13 assume(true) statements. [2024-11-24 02:02:51,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:02:51 BoogieIcfgContainer [2024-11-24 02:02:51,788 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 02:02:51,791 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 02:02:51,791 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 02:02:51,797 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 02:02:51,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 02:02:49" (1/3) ... [2024-11-24 02:02:51,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50cefa89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:02:51, skipping insertion in model container [2024-11-24 02:02:51,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:02:50" (2/3) ... [2024-11-24 02:02:51,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50cefa89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:02:51, skipping insertion in model container [2024-11-24 02:02:51,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:02:51" (3/3) ... [2024-11-24 02:02:51,802 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2024-11-24 02:02:51,819 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 02:02:51,821 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_42-trylock2_racefree.i that has 2 procedures, 98 locations, 1 initial locations, 13 loop locations, and 12 error locations. [2024-11-24 02:02:51,825 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 02:02:51,906 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-24 02:02:51,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 121 transitions, 249 flow [2024-11-24 02:02:52,067 INFO L124 PetriNetUnfolderBase]: 33/167 cut-off events. [2024-11-24 02:02:52,073 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-24 02:02:52,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 167 events. 33/167 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 683 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 112. Up to 6 conditions per place. [2024-11-24 02:02:52,084 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 121 transitions, 249 flow [2024-11-24 02:02:52,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 120 transitions, 247 flow [2024-11-24 02:02:52,103 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 02:02:52,125 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;@18d6d07b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 02:02:52,126 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-24 02:02:52,137 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 02:02:52,137 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-24 02:02:52,137 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 02:02:52,137 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:02:52,143 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-24 02:02:52,143 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-24 02:02:52,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:02:52,157 INFO L85 PathProgramCache]: Analyzing trace with hash 637743207, now seen corresponding path program 1 times [2024-11-24 02:02:52,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:02:52,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444741690] [2024-11-24 02:02:52,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:02:52,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:02:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:02:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:02:52,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:02:52,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444741690] [2024-11-24 02:02:52,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444741690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:02:52,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:02:52,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:02:52,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155095469] [2024-11-24 02:02:52,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:02:52,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:02:52,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:02:52,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:02:52,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:02:52,673 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 121 [2024-11-24 02:02:52,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 120 transitions, 247 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:02:52,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:02:52,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 121 [2024-11-24 02:02:52,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:02:53,551 INFO L124 PetriNetUnfolderBase]: 589/1526 cut-off events. [2024-11-24 02:02:53,551 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-24 02:02:53,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2718 conditions, 1526 events. 589/1526 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 9525 event pairs, 0 based on Foata normal form. 334/1789 useless extension candidates. Maximal degree in co-relation 2678. Up to 1120 conditions per place. [2024-11-24 02:02:53,571 INFO L140 encePairwiseOnDemand]: 94/121 looper letters, 91 selfloop transitions, 3 changer transitions 0/140 dead transitions. [2024-11-24 02:02:53,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 140 transitions, 475 flow [2024-11-24 02:02:53,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:02:53,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 02:02:53,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 326 transitions. [2024-11-24 02:02:53,602 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6735537190082644 [2024-11-24 02:02:53,604 INFO L175 Difference]: Start difference. First operand has 101 places, 120 transitions, 247 flow. Second operand 4 states and 326 transitions. [2024-11-24 02:02:53,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 140 transitions, 475 flow [2024-11-24 02:02:53,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 140 transitions, 475 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 02:02:53,628 INFO L231 Difference]: Finished difference. Result has 103 places, 97 transitions, 211 flow [2024-11-24 02:02:53,631 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=103, PETRI_TRANSITIONS=97} [2024-11-24 02:02:53,637 INFO L279 CegarLoopForPetriNet]: 101 programPoint places, 2 predicate places. [2024-11-24 02:02:53,638 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 97 transitions, 211 flow [2024-11-24 02:02:53,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:02:53,638 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:02:53,638 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-24 02:02:53,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 02:02:53,639 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-24 02:02:53,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:02:53,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1926740530, now seen corresponding path program 1 times [2024-11-24 02:02:53,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:02:53,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443858358] [2024-11-24 02:02:53,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:02:53,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:02:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 02:02:53,707 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 02:02:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 02:02:53,792 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-24 02:02:53,793 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 02:02:53,797 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-11-24 02:02:53,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2024-11-24 02:02:53,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2024-11-24 02:02:53,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2024-11-24 02:02:53,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2024-11-24 02:02:53,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2024-11-24 02:02:53,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2024-11-24 02:02:53,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2024-11-24 02:02:53,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2024-11-24 02:02:53,802 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2024-11-24 02:02:53,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2024-11-24 02:02:53,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2024-11-24 02:02:53,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2024-11-24 02:02:53,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2024-11-24 02:02:53,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2024-11-24 02:02:53,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2024-11-24 02:02:53,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2024-11-24 02:02:53,803 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2024-11-24 02:02:53,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2024-11-24 02:02:53,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2024-11-24 02:02:53,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2024-11-24 02:02:53,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 02:02:53,804 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-24 02:02:53,811 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-24 02:02:53,811 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-24 02:02:53,882 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-24 02:02:53,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 184 transitions, 384 flow [2024-11-24 02:02:53,970 INFO L124 PetriNetUnfolderBase]: 57/295 cut-off events. [2024-11-24 02:02:53,970 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-24 02:02:53,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 295 events. 57/295 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1417 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 182. Up to 9 conditions per place. [2024-11-24 02:02:53,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 184 transitions, 384 flow [2024-11-24 02:02:53,980 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 184 transitions, 384 flow [2024-11-24 02:02:53,982 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 02:02:53,982 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;@18d6d07b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 02:02:53,982 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-24 02:02:53,989 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 02:02:53,990 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-24 02:02:53,990 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 02:02:53,990 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:02:53,991 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-24 02:02:53,992 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-24 02:02:53,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:02:53,993 INFO L85 PathProgramCache]: Analyzing trace with hash 813393948, now seen corresponding path program 1 times [2024-11-24 02:02:53,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:02:53,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077564444] [2024-11-24 02:02:53,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:02:53,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:02:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:02:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:02:54,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:02:54,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077564444] [2024-11-24 02:02:54,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077564444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:02:54,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:02:54,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:02:54,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39546074] [2024-11-24 02:02:54,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:02:54,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:02:54,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:02:54,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:02:54,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:02:54,175 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 184 [2024-11-24 02:02:54,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 184 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:02:54,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:02:54,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 184 [2024-11-24 02:02:54,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:03:04,111 INFO L124 PetriNetUnfolderBase]: 28423/59920 cut-off events. [2024-11-24 02:03:04,111 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2024-11-24 02:03:04,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103661 conditions, 59920 events. 28423/59920 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 948. Compared 611182 event pairs, 21714 based on Foata normal form. 12694/67777 useless extension candidates. Maximal degree in co-relation 45518. Up to 43557 conditions per place. [2024-11-24 02:03:04,552 INFO L140 encePairwiseOnDemand]: 145/184 looper letters, 119 selfloop transitions, 3 changer transitions 0/196 dead transitions. [2024-11-24 02:03:04,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 196 transitions, 652 flow [2024-11-24 02:03:04,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:03:04,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 02:03:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 478 transitions. [2024-11-24 02:03:04,557 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6494565217391305 [2024-11-24 02:03:04,557 INFO L175 Difference]: Start difference. First operand has 153 places, 184 transitions, 384 flow. Second operand 4 states and 478 transitions. [2024-11-24 02:03:04,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 196 transitions, 652 flow [2024-11-24 02:03:04,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 196 transitions, 652 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 02:03:04,564 INFO L231 Difference]: Finished difference. Result has 158 places, 153 transitions, 342 flow [2024-11-24 02:03:04,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=158, PETRI_TRANSITIONS=153} [2024-11-24 02:03:04,566 INFO L279 CegarLoopForPetriNet]: 153 programPoint places, 5 predicate places. [2024-11-24 02:03:04,566 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 153 transitions, 342 flow [2024-11-24 02:03:04,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:03:04,567 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:03:04,567 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-24 02:03:04,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 02:03:04,568 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-24 02:03:04,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:03:04,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1097471004, now seen corresponding path program 1 times [2024-11-24 02:03:04,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:03:04,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865113861] [2024-11-24 02:03:04,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:03:04,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:03:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:03:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:03:04,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:03:04,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865113861] [2024-11-24 02:03:04,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865113861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:03:04,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:03:04,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 02:03:04,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212377812] [2024-11-24 02:03:04,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:03:04,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 02:03:04,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:03:04,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 02:03:04,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:03:04,817 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 184 [2024-11-24 02:03:04,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 153 transitions, 342 flow. Second operand has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:03:04,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:03:04,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 184 [2024-11-24 02:03:04,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:03:10,668 INFO L124 PetriNetUnfolderBase]: 27535/50370 cut-off events. [2024-11-24 02:03:10,669 INFO L125 PetriNetUnfolderBase]: For 1584/1584 co-relation queries the response was YES. [2024-11-24 02:03:10,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94335 conditions, 50370 events. 27535/50370 cut-off events. For 1584/1584 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 464231 event pairs, 924 based on Foata normal form. 484/48862 useless extension candidates. Maximal degree in co-relation 4315. Up to 35067 conditions per place. [2024-11-24 02:03:10,886 INFO L140 encePairwiseOnDemand]: 179/184 looper letters, 199 selfloop transitions, 6 changer transitions 0/279 dead transitions. [2024-11-24 02:03:10,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 279 transitions, 1002 flow [2024-11-24 02:03:10,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 02:03:10,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 02:03:10,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 650 transitions. [2024-11-24 02:03:10,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5887681159420289 [2024-11-24 02:03:10,889 INFO L175 Difference]: Start difference. First operand has 158 places, 153 transitions, 342 flow. Second operand 6 states and 650 transitions. [2024-11-24 02:03:10,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 279 transitions, 1002 flow [2024-11-24 02:03:10,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 279 transitions, 1000 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 02:03:10,907 INFO L231 Difference]: Finished difference. Result has 161 places, 152 transitions, 348 flow [2024-11-24 02:03:10,907 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=161, PETRI_TRANSITIONS=152} [2024-11-24 02:03:10,908 INFO L279 CegarLoopForPetriNet]: 153 programPoint places, 8 predicate places. [2024-11-24 02:03:10,908 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 152 transitions, 348 flow [2024-11-24 02:03:10,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:03:10,909 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:03:10,909 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:03:10,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 02:03:10,909 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-24 02:03:10,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:03:10,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1411646067, now seen corresponding path program 1 times [2024-11-24 02:03:10,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:03:10,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407899017] [2024-11-24 02:03:10,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:03:10,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:03:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:03:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:03:11,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:03:11,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407899017] [2024-11-24 02:03:11,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407899017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:03:11,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:03:11,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:03:11,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12066927] [2024-11-24 02:03:11,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:03:11,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:03:11,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:03:11,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:03:11,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:03:11,060 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 184 [2024-11-24 02:03:11,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 152 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:03:11,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:03:11,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 184 [2024-11-24 02:03:11,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:03:22,230 INFO L124 PetriNetUnfolderBase]: 49861/100490 cut-off events. [2024-11-24 02:03:22,231 INFO L125 PetriNetUnfolderBase]: For 4054/4585 co-relation queries the response was YES. [2024-11-24 02:03:22,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178988 conditions, 100490 events. 49861/100490 cut-off events. For 4054/4585 co-relation queries the response was YES. Maximal size of possible extension queue 1664. Compared 1078553 event pairs, 12342 based on Foata normal form. 1004/95060 useless extension candidates. Maximal degree in co-relation 160190. Up to 42027 conditions per place. [2024-11-24 02:03:22,773 INFO L140 encePairwiseOnDemand]: 173/184 looper letters, 234 selfloop transitions, 16 changer transitions 0/325 dead transitions. [2024-11-24 02:03:22,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 325 transitions, 1248 flow [2024-11-24 02:03:22,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:03:22,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 02:03:22,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 626 transitions. [2024-11-24 02:03:22,782 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6804347826086956 [2024-11-24 02:03:22,782 INFO L175 Difference]: Start difference. First operand has 161 places, 152 transitions, 348 flow. Second operand 5 states and 626 transitions. [2024-11-24 02:03:22,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 325 transitions, 1248 flow [2024-11-24 02:03:22,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 325 transitions, 1225 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-24 02:03:22,801 INFO L231 Difference]: Finished difference. Result has 165 places, 167 transitions, 462 flow [2024-11-24 02:03:22,802 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=462, PETRI_PLACES=165, PETRI_TRANSITIONS=167} [2024-11-24 02:03:22,804 INFO L279 CegarLoopForPetriNet]: 153 programPoint places, 12 predicate places. [2024-11-24 02:03:22,804 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 167 transitions, 462 flow [2024-11-24 02:03:22,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:03:22,805 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:03:22,805 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-24 02:03:22,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 02:03:22,805 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-24 02:03:22,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:03:22,806 INFO L85 PathProgramCache]: Analyzing trace with hash 338138130, now seen corresponding path program 1 times [2024-11-24 02:03:22,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:03:22,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509324944] [2024-11-24 02:03:22,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:03:22,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:03:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:03:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:03:22,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:03:22,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509324944] [2024-11-24 02:03:22,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509324944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:03:22,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:03:22,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:03:22,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489607645] [2024-11-24 02:03:22,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:03:22,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:03:22,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:03:22,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:03:22,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:03:22,912 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 184 [2024-11-24 02:03:22,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 167 transitions, 462 flow. Second operand has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:03:22,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:03:22,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 184 [2024-11-24 02:03:22,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 02:03:33,540 INFO L124 PetriNetUnfolderBase]: 48065/97546 cut-off events. [2024-11-24 02:03:33,540 INFO L125 PetriNetUnfolderBase]: For 21659/21687 co-relation queries the response was YES. [2024-11-24 02:03:33,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189610 conditions, 97546 events. 48065/97546 cut-off events. For 21659/21687 co-relation queries the response was YES. Maximal size of possible extension queue 1598. Compared 1046424 event pairs, 16099 based on Foata normal form. 512/92752 useless extension candidates. Maximal degree in co-relation 145826. Up to 69961 conditions per place. [2024-11-24 02:03:34,276 INFO L140 encePairwiseOnDemand]: 179/184 looper letters, 181 selfloop transitions, 6 changer transitions 0/261 dead transitions. [2024-11-24 02:03:34,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 261 transitions, 1086 flow [2024-11-24 02:03:34,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:03:34,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 02:03:34,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 457 transitions. [2024-11-24 02:03:34,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6209239130434783 [2024-11-24 02:03:34,281 INFO L175 Difference]: Start difference. First operand has 165 places, 167 transitions, 462 flow. Second operand 4 states and 457 transitions. [2024-11-24 02:03:34,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 261 transitions, 1086 flow [2024-11-24 02:03:34,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 261 transitions, 1082 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-24 02:03:34,355 INFO L231 Difference]: Finished difference. Result has 167 places, 167 transitions, 474 flow [2024-11-24 02:03:34,356 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=474, PETRI_PLACES=167, PETRI_TRANSITIONS=167} [2024-11-24 02:03:34,357 INFO L279 CegarLoopForPetriNet]: 153 programPoint places, 14 predicate places. [2024-11-24 02:03:34,357 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 167 transitions, 474 flow [2024-11-24 02:03:34,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:03:34,358 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:03:34,358 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-24 02:03:34,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 02:03:34,358 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-24 02:03:34,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:03:34,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1466743002, now seen corresponding path program 1 times [2024-11-24 02:03:34,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:03:34,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782977327] [2024-11-24 02:03:34,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:03:34,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:03:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 02:03:34,401 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 02:03:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 02:03:34,442 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-24 02:03:34,442 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 02:03:34,442 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-11-24 02:03:34,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2024-11-24 02:03:34,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2024-11-24 02:03:34,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2024-11-24 02:03:34,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2024-11-24 02:03:34,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2024-11-24 02:03:34,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2024-11-24 02:03:34,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2024-11-24 02:03:34,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2024-11-24 02:03:34,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2024-11-24 02:03:34,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2024-11-24 02:03:34,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2024-11-24 02:03:34,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2024-11-24 02:03:34,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2024-11-24 02:03:34,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2024-11-24 02:03:34,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2024-11-24 02:03:34,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2024-11-24 02:03:34,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2024-11-24 02:03:34,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2024-11-24 02:03:34,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2024-11-24 02:03:34,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2024-11-24 02:03:34,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2024-11-24 02:03:34,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2024-11-24 02:03:34,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2024-11-24 02:03:34,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2024-11-24 02:03:34,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2024-11-24 02:03:34,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2024-11-24 02:03:34,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2024-11-24 02:03:34,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2024-11-24 02:03:34,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 02:03:34,447 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-24 02:03:34,449 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-24 02:03:34,449 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-24 02:03:34,536 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-24 02:03:34,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 247 transitions, 521 flow [2024-11-24 02:03:34,639 INFO L124 PetriNetUnfolderBase]: 84/442 cut-off events. [2024-11-24 02:03:34,639 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-24 02:03:34,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 442 events. 84/442 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2263 event pairs, 1 based on Foata normal form. 0/310 useless extension candidates. Maximal degree in co-relation 310. Up to 12 conditions per place. [2024-11-24 02:03:34,645 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 247 transitions, 521 flow [2024-11-24 02:03:34,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 247 transitions, 521 flow [2024-11-24 02:03:34,658 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 02:03:34,660 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;@18d6d07b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 02:03:34,660 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-11-24 02:03:34,664 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 02:03:34,664 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-24 02:03:34,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 02:03:34,664 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 02:03:34,665 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-24 02:03:34,665 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2024-11-24 02:03:34,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:03:34,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1049165904, now seen corresponding path program 1 times [2024-11-24 02:03:34,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:03:34,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627742336] [2024-11-24 02:03:34,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:03:34,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:03:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:03:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:03:34,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:03:34,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627742336] [2024-11-24 02:03:34,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627742336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:03:34,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:03:34,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:03:34,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135549917] [2024-11-24 02:03:34,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:03:34,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:03:34,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:03:34,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:03:34,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:03:34,820 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 247 [2024-11-24 02:03:34,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 247 transitions, 521 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:03:34,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 02:03:34,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 247 [2024-11-24 02:03:34,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand