./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 62bb9e4cb3fb45378d7de513612dc08e0394f3048289be85bceda07932ec1175 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 13:49:28,963 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 13:49:29,044 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 13:49:29,051 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 13:49:29,052 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 13:49:29,085 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 13:49:29,086 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 13:49:29,086 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 13:49:29,087 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 13:49:29,089 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 13:49:29,089 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 13:49:29,089 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 13:49:29,090 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 13:49:29,090 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 13:49:29,092 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 13:49:29,092 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 13:49:29,093 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 13:49:29,093 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 13:49:29,093 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 13:49:29,093 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 13:49:29,094 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 13:49:29,097 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 13:49:29,097 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 13:49:29,098 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 13:49:29,098 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 13:49:29,098 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 13:49:29,098 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 13:49:29,099 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 13:49:29,099 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 13:49:29,099 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 13:49:29,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 13:49:29,100 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 13:49:29,100 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 13:49:29,100 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 13:49:29,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:49:29,101 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 13:49:29,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 13:49:29,101 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 13:49:29,102 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 13:49:29,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 13:49:29,103 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 13:49:29,103 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 13:49:29,104 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 13:49:29,104 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 13:49:29,104 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62bb9e4cb3fb45378d7de513612dc08e0394f3048289be85bceda07932ec1175 [2024-11-19 13:49:29,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 13:49:29,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 13:49:29,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 13:49:29,389 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 13:49:29,390 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 13:49:29,391 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i [2024-11-19 13:49:30,842 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 13:49:31,116 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 13:49:31,117 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i [2024-11-19 13:49:31,134 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbed4d226/3e5402a3db854a8d9c763e687c7e7939/FLAG653dc0b0e [2024-11-19 13:49:31,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbed4d226/3e5402a3db854a8d9c763e687c7e7939 [2024-11-19 13:49:31,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 13:49:31,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 13:49:31,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 13:49:31,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 13:49:31,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 13:49:31,425 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:49:31" (1/1) ... [2024-11-19 13:49:31,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363a2c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:31, skipping insertion in model container [2024-11-19 13:49:31,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:49:31" (1/1) ... [2024-11-19 13:49:31,478 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 13:49:31,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:49:31,848 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 13:49:31,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:49:31,943 INFO L204 MainTranslator]: Completed translation [2024-11-19 13:49:31,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:31 WrapperNode [2024-11-19 13:49:31,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 13:49:31,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 13:49:31,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 13:49:31,944 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 13:49:31,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:31" (1/1) ... [2024-11-19 13:49:31,961 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:31" (1/1) ... [2024-11-19 13:49:31,986 INFO L138 Inliner]: procedures = 165, calls = 30, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 160 [2024-11-19 13:49:31,990 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 13:49:31,991 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 13:49:31,991 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 13:49:31,991 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 13:49:32,002 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:31" (1/1) ... [2024-11-19 13:49:32,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:31" (1/1) ... [2024-11-19 13:49:32,006 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:31" (1/1) ... [2024-11-19 13:49:32,020 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 5, 1]. The 2 writes are split as follows [0, 0, 2]. [2024-11-19 13:49:32,020 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:31" (1/1) ... [2024-11-19 13:49:32,020 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:31" (1/1) ... [2024-11-19 13:49:32,026 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:31" (1/1) ... [2024-11-19 13:49:32,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:31" (1/1) ... [2024-11-19 13:49:32,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:31" (1/1) ... [2024-11-19 13:49:32,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:31" (1/1) ... [2024-11-19 13:49:32,039 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 13:49:32,040 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 13:49:32,040 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 13:49:32,041 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 13:49:32,041 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:31" (1/1) ... [2024-11-19 13:49:32,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:49:32,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:49:32,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 13:49:32,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 13:49:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 13:49:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 13:49:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 13:49:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-19 13:49:32,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-19 13:49:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 13:49:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 13:49:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 13:49:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 13:49:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 13:49:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 13:49:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 13:49:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 13:49:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 13:49:32,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 13:49:32,119 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 13:49:32,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 13:49:32,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 13:49:32,120 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 13:49:32,268 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 13:49:32,271 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 13:49:32,544 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 13:49:32,545 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 13:49:32,952 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 13:49:32,952 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 13:49:32,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:49:32 BoogieIcfgContainer [2024-11-19 13:49:32,954 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 13:49:32,956 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 13:49:32,957 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 13:49:32,960 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 13:49:32,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:49:31" (1/3) ... [2024-11-19 13:49:32,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40cb2b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:49:32, skipping insertion in model container [2024-11-19 13:49:32,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:31" (2/3) ... [2024-11-19 13:49:32,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40cb2b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:49:32, skipping insertion in model container [2024-11-19 13:49:32,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:49:32" (3/3) ... [2024-11-19 13:49:32,964 INFO L112 eAbstractionObserver]: Analyzing ICFG 37_stack_lock_p0_vs_concur.i [2024-11-19 13:49:32,979 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 13:49:32,980 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-19 13:49:32,980 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 13:49:33,030 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:49:33,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 36 transitions, 76 flow [2024-11-19 13:49:33,115 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2024-11-19 13:49:33,120 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:49:33,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 2/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 68 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-19 13:49:33,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 36 transitions, 76 flow [2024-11-19 13:49:33,129 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 36 transitions, 76 flow [2024-11-19 13:49:33,146 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:49:33,162 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;@173057e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:49:33,162 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-19 13:49:33,190 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:49:33,190 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-19 13:49:33,190 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:49:33,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:33,195 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 13:49:33,195 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 13:49:33,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:33,202 INFO L85 PathProgramCache]: Analyzing trace with hash 718931870, now seen corresponding path program 1 times [2024-11-19 13:49:33,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:33,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275867713] [2024-11-19 13:49:33,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:33,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:49:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:49:34,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:49:34,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275867713] [2024-11-19 13:49:34,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275867713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:49:34,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:49:34,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 13:49:34,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110471915] [2024-11-19 13:49:34,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:49:34,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:49:34,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:49:34,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:49:34,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:49:34,101 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-11-19 13:49:34,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-11-19 13:49:34,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:49:34,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-11-19 13:49:34,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:49:34,206 INFO L124 PetriNetUnfolderBase]: 35/118 cut-off events. [2024-11-19 13:49:34,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:49:34,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 118 events. 35/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 259 event pairs, 2 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 198. Up to 79 conditions per place. [2024-11-19 13:49:34,211 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 21 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2024-11-19 13:49:34,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 118 flow [2024-11-19 13:49:34,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:49:34,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:49:34,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-19 13:49:34,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2024-11-19 13:49:34,229 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 76 flow. Second operand 3 states and 70 transitions. [2024-11-19 13:49:34,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 118 flow [2024-11-19 13:49:34,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 118 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:49:34,234 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 80 flow [2024-11-19 13:49:34,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2024-11-19 13:49:34,240 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2024-11-19 13:49:34,241 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 80 flow [2024-11-19 13:49:34,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-11-19 13:49:34,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:34,242 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 13:49:34,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 13:49:34,242 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 13:49:34,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:34,244 INFO L85 PathProgramCache]: Analyzing trace with hash 718926813, now seen corresponding path program 1 times [2024-11-19 13:49:34,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:34,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109749707] [2024-11-19 13:49:34,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:34,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:49:34,525 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 13:49:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:49:34,566 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 13:49:34,566 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 13:49:34,568 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-11-19 13:49:34,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2024-11-19 13:49:34,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2024-11-19 13:49:34,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2024-11-19 13:49:34,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2024-11-19 13:49:34,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2024-11-19 13:49:34,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2024-11-19 13:49:34,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2024-11-19 13:49:34,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2024-11-19 13:49:34,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2024-11-19 13:49:34,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2024-11-19 13:49:34,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2024-11-19 13:49:34,572 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2024-11-19 13:49:34,572 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2024-11-19 13:49:34,572 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2024-11-19 13:49:34,572 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2024-11-19 13:49:34,573 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2024-11-19 13:49:34,573 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2024-11-19 13:49:34,573 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2024-11-19 13:49:34,573 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2024-11-19 13:49:34,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2024-11-19 13:49:34,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 13:49:34,574 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 13:49:34,576 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 13:49:34,576 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 13:49:34,608 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:49:34,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 144 flow [2024-11-19 13:49:34,624 INFO L124 PetriNetUnfolderBase]: 4/72 cut-off events. [2024-11-19 13:49:34,624 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 13:49:34,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 72 events. 4/72 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 223 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2024-11-19 13:49:34,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 67 transitions, 144 flow [2024-11-19 13:49:34,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 67 transitions, 144 flow [2024-11-19 13:49:34,628 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:49:34,629 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;@173057e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:49:34,629 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-11-19 13:49:34,632 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:49:34,632 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-19 13:49:34,632 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 13:49:34,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:34,633 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 13:49:34,633 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-19 13:49:34,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:34,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1593020354, now seen corresponding path program 1 times [2024-11-19 13:49:34,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:34,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825068066] [2024-11-19 13:49:34,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:34,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:49:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:49:34,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:49:34,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825068066] [2024-11-19 13:49:34,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825068066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:49:34,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:49:34,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 13:49:34,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140336923] [2024-11-19 13:49:34,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:49:34,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:49:34,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:49:34,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:49:34,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:49:34,945 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 67 [2024-11-19 13:49:34,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-11-19 13:49:34,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:49:34,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 67 [2024-11-19 13:49:34,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:49:35,335 INFO L124 PetriNetUnfolderBase]: 1347/2637 cut-off events. [2024-11-19 13:49:35,336 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-19 13:49:35,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4871 conditions, 2637 events. 1347/2637 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 15725 event pairs, 558 based on Foata normal form. 0/2233 useless extension candidates. Maximal degree in co-relation 4272. Up to 2146 conditions per place. [2024-11-19 13:49:35,364 INFO L140 encePairwiseOnDemand]: 47/67 looper letters, 39 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2024-11-19 13:49:35,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 63 transitions, 225 flow [2024-11-19 13:49:35,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:49:35,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:49:35,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-11-19 13:49:35,367 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6517412935323383 [2024-11-19 13:49:35,367 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 144 flow. Second operand 3 states and 131 transitions. [2024-11-19 13:49:35,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 63 transitions, 225 flow [2024-11-19 13:49:35,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 225 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:49:35,370 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 151 flow [2024-11-19 13:49:35,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-19 13:49:35,371 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2024-11-19 13:49:35,371 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 151 flow [2024-11-19 13:49:35,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-11-19 13:49:35,371 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:35,372 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-19 13:49:35,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 13:49:35,372 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2024-11-19 13:49:35,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:35,373 INFO L85 PathProgramCache]: Analyzing trace with hash 682571635, now seen corresponding path program 1 times [2024-11-19 13:49:35,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:35,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210439102] [2024-11-19 13:49:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:35,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:49:35,647 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 13:49:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:49:35,680 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 13:49:35,682 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 13:49:35,682 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2024-11-19 13:49:35,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2024-11-19 13:49:35,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2024-11-19 13:49:35,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2024-11-19 13:49:35,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2024-11-19 13:49:35,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2024-11-19 13:49:35,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2024-11-19 13:49:35,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2024-11-19 13:49:35,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2024-11-19 13:49:35,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2024-11-19 13:49:35,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2024-11-19 13:49:35,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2024-11-19 13:49:35,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2024-11-19 13:49:35,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2024-11-19 13:49:35,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2024-11-19 13:49:35,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2024-11-19 13:49:35,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2024-11-19 13:49:35,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2024-11-19 13:49:35,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2024-11-19 13:49:35,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2024-11-19 13:49:35,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2024-11-19 13:49:35,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2024-11-19 13:49:35,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2024-11-19 13:49:35,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2024-11-19 13:49:35,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2024-11-19 13:49:35,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2024-11-19 13:49:35,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2024-11-19 13:49:35,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2024-11-19 13:49:35,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2024-11-19 13:49:35,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2024-11-19 13:49:35,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2024-11-19 13:49:35,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 13:49:35,690 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 13:49:35,691 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 13:49:35,691 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 13:49:35,739 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:49:35,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 98 transitions, 214 flow [2024-11-19 13:49:35,754 INFO L124 PetriNetUnfolderBase]: 6/106 cut-off events. [2024-11-19 13:49:35,754 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 13:49:35,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 6/106 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 437 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2024-11-19 13:49:35,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 98 transitions, 214 flow [2024-11-19 13:49:35,757 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 98 transitions, 214 flow [2024-11-19 13:49:35,758 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:49:35,759 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;@173057e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:49:35,759 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-11-19 13:49:35,762 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:49:35,762 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-19 13:49:35,762 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 13:49:35,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:35,762 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 13:49:35,762 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 13:49:35,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:35,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1307052064, now seen corresponding path program 1 times [2024-11-19 13:49:35,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:35,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060551356] [2024-11-19 13:49:35,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:35,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:49:36,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:49:36,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:49:36,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060551356] [2024-11-19 13:49:36,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060551356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:49:36,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:49:36,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 13:49:36,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195437871] [2024-11-19 13:49:36,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:49:36,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:49:36,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:49:36,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:49:36,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:49:36,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 98 [2024-11-19 13:49:36,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 98 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-19 13:49:36,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:49:36,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 98 [2024-11-19 13:49:36,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:49:41,201 INFO L124 PetriNetUnfolderBase]: 34430/54526 cut-off events. [2024-11-19 13:49:41,202 INFO L125 PetriNetUnfolderBase]: For 1613/1613 co-relation queries the response was YES. [2024-11-19 13:49:41,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103189 conditions, 54526 events. 34430/54526 cut-off events. For 1613/1613 co-relation queries the response was YES. Maximal size of possible extension queue 1292. Compared 418440 event pairs, 19607 based on Foata normal form. 0/45794 useless extension candidates. Maximal degree in co-relation 84927. Up to 47482 conditions per place. [2024-11-19 13:49:41,616 INFO L140 encePairwiseOnDemand]: 69/98 looper letters, 57 selfloop transitions, 4 changer transitions 0/92 dead transitions. [2024-11-19 13:49:41,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 336 flow [2024-11-19 13:49:41,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:49:41,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:49:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2024-11-19 13:49:41,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-11-19 13:49:41,621 INFO L175 Difference]: Start difference. First operand has 99 places, 98 transitions, 214 flow. Second operand 3 states and 192 transitions. [2024-11-19 13:49:41,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 336 flow [2024-11-19 13:49:41,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 92 transitions, 332 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-19 13:49:41,630 INFO L231 Difference]: Finished difference. Result has 89 places, 85 transitions, 222 flow [2024-11-19 13:49:41,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=89, PETRI_TRANSITIONS=85} [2024-11-19 13:49:41,632 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -10 predicate places. [2024-11-19 13:49:41,632 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 85 transitions, 222 flow [2024-11-19 13:49:41,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-19 13:49:41,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:41,633 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:49:41,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 13:49:41,634 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 13:49:41,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:41,634 INFO L85 PathProgramCache]: Analyzing trace with hash 215344409, now seen corresponding path program 1 times [2024-11-19 13:49:41,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:41,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103393987] [2024-11-19 13:49:41,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:41,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:49:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:49:42,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:49:42,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103393987] [2024-11-19 13:49:42,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103393987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:49:42,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:49:42,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:49:42,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588026964] [2024-11-19 13:49:42,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:49:42,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:49:42,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:49:42,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:49:42,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 13:49:42,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-11-19 13:49:42,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 85 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2024-11-19 13:49:42,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:49:42,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-11-19 13:49:42,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:49:47,182 INFO L124 PetriNetUnfolderBase]: 42485/67588 cut-off events. [2024-11-19 13:49:47,182 INFO L125 PetriNetUnfolderBase]: For 3518/3518 co-relation queries the response was YES. [2024-11-19 13:49:47,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139248 conditions, 67588 events. 42485/67588 cut-off events. For 3518/3518 co-relation queries the response was YES. Maximal size of possible extension queue 1610. Compared 540422 event pairs, 14756 based on Foata normal form. 903/57180 useless extension candidates. Maximal degree in co-relation 131839. Up to 54494 conditions per place. [2024-11-19 13:49:47,638 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 120 selfloop transitions, 12 changer transitions 0/161 dead transitions. [2024-11-19 13:49:47,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 161 transitions, 721 flow [2024-11-19 13:49:47,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:49:47,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:49:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 310 transitions. [2024-11-19 13:49:47,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5272108843537415 [2024-11-19 13:49:47,644 INFO L175 Difference]: Start difference. First operand has 89 places, 85 transitions, 222 flow. Second operand 6 states and 310 transitions. [2024-11-19 13:49:47,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 161 transitions, 721 flow [2024-11-19 13:49:47,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 161 transitions, 717 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:49:47,664 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 301 flow [2024-11-19 13:49:47,664 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2024-11-19 13:49:47,666 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -3 predicate places. [2024-11-19 13:49:47,666 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 301 flow [2024-11-19 13:49:47,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2024-11-19 13:49:47,666 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:47,666 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-19 13:49:47,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 13:49:47,667 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 13:49:47,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:47,667 INFO L85 PathProgramCache]: Analyzing trace with hash 986953948, now seen corresponding path program 1 times [2024-11-19 13:49:47,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:47,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438678917] [2024-11-19 13:49:47,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:47,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:49:48,054 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 13:49:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:49:48,072 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 13:49:48,073 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 13:49:48,073 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2024-11-19 13:49:48,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2024-11-19 13:49:48,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2024-11-19 13:49:48,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2024-11-19 13:49:48,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2024-11-19 13:49:48,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2024-11-19 13:49:48,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2024-11-19 13:49:48,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2024-11-19 13:49:48,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2024-11-19 13:49:48,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2024-11-19 13:49:48,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2024-11-19 13:49:48,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2024-11-19 13:49:48,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2024-11-19 13:49:48,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2024-11-19 13:49:48,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2024-11-19 13:49:48,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2024-11-19 13:49:48,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2024-11-19 13:49:48,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2024-11-19 13:49:48,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2024-11-19 13:49:48,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2024-11-19 13:49:48,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2024-11-19 13:49:48,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2024-11-19 13:49:48,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 41 remaining) [2024-11-19 13:49:48,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 41 remaining) [2024-11-19 13:49:48,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 41 remaining) [2024-11-19 13:49:48,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2024-11-19 13:49:48,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2024-11-19 13:49:48,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2024-11-19 13:49:48,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2024-11-19 13:49:48,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2024-11-19 13:49:48,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2024-11-19 13:49:48,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2024-11-19 13:49:48,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2024-11-19 13:49:48,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2024-11-19 13:49:48,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2024-11-19 13:49:48,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2024-11-19 13:49:48,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2024-11-19 13:49:48,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2024-11-19 13:49:48,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2024-11-19 13:49:48,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2024-11-19 13:49:48,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2024-11-19 13:49:48,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 13:49:48,081 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-19 13:49:48,081 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 13:49:48,081 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-19 13:49:48,123 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:49:48,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 129 transitions, 286 flow [2024-11-19 13:49:48,145 INFO L124 PetriNetUnfolderBase]: 8/140 cut-off events. [2024-11-19 13:49:48,145 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-19 13:49:48,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 140 events. 8/140 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 612 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 123. Up to 5 conditions per place. [2024-11-19 13:49:48,146 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 129 transitions, 286 flow [2024-11-19 13:49:48,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 129 transitions, 286 flow [2024-11-19 13:49:48,149 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:49:48,150 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;@173057e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:49:48,150 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2024-11-19 13:49:48,152 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:49:48,152 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-19 13:49:48,153 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 13:49:48,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:48,153 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 13:49:48,153 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-19 13:49:48,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:48,154 INFO L85 PathProgramCache]: Analyzing trace with hash 829274112, now seen corresponding path program 1 times [2024-11-19 13:49:48,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:48,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214379044] [2024-11-19 13:49:48,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:48,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:49:48,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:49:48,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:49:48,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214379044] [2024-11-19 13:49:48,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214379044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:49:48,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:49:48,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 13:49:48,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666844207] [2024-11-19 13:49:48,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:49:48,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:49:48,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:49:48,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:49:48,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:49:48,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 129 [2024-11-19 13:49:48,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 129 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2024-11-19 13:49:48,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:49:48,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 129 [2024-11-19 13:49:48,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand