./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.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 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:42:13,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:42:14,078 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:42:14,082 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:42:14,084 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:42:14,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:42:14,117 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:42:14,117 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:42:14,118 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:42:14,118 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:42:14,119 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:42:14,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:42:14,120 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:42:14,120 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:42:14,123 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:42:14,123 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:42:14,123 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:42:14,123 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:42:14,124 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:42:14,124 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:42:14,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:42:14,125 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:42:14,125 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:42:14,125 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:42:14,126 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:42:14,126 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:42:14,126 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:42:14,127 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:42:14,127 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:42:14,127 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:42:14,128 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:42:14,128 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:42:14,128 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:42:14,128 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:42:14,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:42:14,129 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:42:14,129 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:42:14,130 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:42:14,130 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:42:14,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:42:14,131 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:42:14,133 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:42:14,133 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:42:14,133 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:42:14,133 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df [2024-10-13 16:42:14,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:42:14,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:42:14,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:42:14,438 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:42:14,440 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:42:14,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2024-10-13 16:42:15,874 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:42:16,116 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:42:16,117 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2024-10-13 16:42:16,130 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b60b5ae1e/66c9b1360fd341b58c8b5067e73b2af5/FLAG4729dc09a [2024-10-13 16:42:16,450 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b60b5ae1e/66c9b1360fd341b58c8b5067e73b2af5 [2024-10-13 16:42:16,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:42:16,454 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:42:16,456 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:42:16,456 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:42:16,462 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:42:16,463 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:42:16" (1/1) ... [2024-10-13 16:42:16,463 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1502a0dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:16, skipping insertion in model container [2024-10-13 16:42:16,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:42:16" (1/1) ... [2024-10-13 16:42:16,508 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:42:16,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:42:16,912 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:42:16,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:42:17,022 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:42:17,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:17 WrapperNode [2024-10-13 16:42:17,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:42:17,024 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:42:17,024 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:42:17,024 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:42:17,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:17" (1/1) ... [2024-10-13 16:42:17,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:17" (1/1) ... [2024-10-13 16:42:17,095 INFO L138 Inliner]: procedures = 171, calls = 49, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 93 [2024-10-13 16:42:17,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:42:17,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:42:17,098 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:42:17,098 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:42:17,120 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:17" (1/1) ... [2024-10-13 16:42:17,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:17" (1/1) ... [2024-10-13 16:42:17,123 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:17" (1/1) ... [2024-10-13 16:42:17,146 INFO L175 MemorySlicer]: Split 25 memory accesses to 6 slices as follows [2, 5, 5, 5, 2, 6]. 24 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 5, 5, 5, 0, 1]. The 3 writes are split as follows [0, 0, 0, 0, 1, 2]. [2024-10-13 16:42:17,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:17" (1/1) ... [2024-10-13 16:42:17,147 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:17" (1/1) ... [2024-10-13 16:42:17,155 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:17" (1/1) ... [2024-10-13 16:42:17,158 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:17" (1/1) ... [2024-10-13 16:42:17,163 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:17" (1/1) ... [2024-10-13 16:42:17,164 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:17" (1/1) ... [2024-10-13 16:42:17,171 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:42:17,172 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:42:17,172 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:42:17,172 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:42:17,173 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:17" (1/1) ... [2024-10-13 16:42:17,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:42:17,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:42:17,215 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) [2024-10-13 16:42:17,217 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 [2024-10-13 16:42:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:42:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:42:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 16:42:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 16:42:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-13 16:42:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-13 16:42:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:42:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:42:17,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 16:42:17,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 16:42:17,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-13 16:42:17,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-13 16:42:17,262 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 16:42:17,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:42:17,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 16:42:17,262 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 16:42:17,262 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 16:42:17,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 16:42:17,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:42:17,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:42:17,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 16:42:17,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 16:42:17,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-13 16:42:17,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-13 16:42:17,264 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 16:42:17,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:42:17,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:42:17,265 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:42:17,393 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:42:17,395 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:42:17,625 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:42:17,625 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:42:17,821 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:42:17,822 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-13 16:42:17,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:42:17 BoogieIcfgContainer [2024-10-13 16:42:17,823 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:42:17,825 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:42:17,825 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:42:17,828 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:42:17,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:42:16" (1/3) ... [2024-10-13 16:42:17,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174be046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:42:17, skipping insertion in model container [2024-10-13 16:42:17,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:42:17" (2/3) ... [2024-10-13 16:42:17,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174be046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:42:17, skipping insertion in model container [2024-10-13 16:42:17,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:42:17" (3/3) ... [2024-10-13 16:42:17,831 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2024-10-13 16:42:17,849 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:42:17,849 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-13 16:42:17,849 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:42:17,899 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-13 16:42:17,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 60 transitions, 127 flow [2024-10-13 16:42:17,981 INFO L124 PetriNetUnfolderBase]: 11/75 cut-off events. [2024-10-13 16:42:17,983 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 16:42:17,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 11/75 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 222 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2024-10-13 16:42:17,988 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 60 transitions, 127 flow [2024-10-13 16:42:17,992 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 59 transitions, 125 flow [2024-10-13 16:42:18,005 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:42:18,015 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;@22395454, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:42:18,015 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-13 16:42:18,023 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:42:18,024 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-10-13 16:42:18,024 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:42:18,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:18,025 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 16:42:18,026 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:42:18,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:18,031 INFO L85 PathProgramCache]: Analyzing trace with hash 351906388, now seen corresponding path program 1 times [2024-10-13 16:42:18,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:18,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053419663] [2024-10-13 16:42:18,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:18,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:18,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:18,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053419663] [2024-10-13 16:42:18,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053419663] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:18,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:42:18,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:42:18,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231760977] [2024-10-13 16:42:18,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:18,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:42:18,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:18,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:42:18,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:42:18,445 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-13 16:42:18,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:18,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:18,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-13 16:42:18,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:18,718 INFO L124 PetriNetUnfolderBase]: 144/390 cut-off events. [2024-10-13 16:42:18,718 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 16:42:18,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 390 events. 144/390 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1836 event pairs, 20 based on Foata normal form. 78/439 useless extension candidates. Maximal degree in co-relation 683. Up to 277 conditions per place. [2024-10-13 16:42:18,723 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 49 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2024-10-13 16:42:18,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 74 transitions, 259 flow [2024-10-13 16:42:18,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:42:18,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:42:18,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-10-13 16:42:18,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6791666666666667 [2024-10-13 16:42:18,742 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 125 flow. Second operand 4 states and 163 transitions. [2024-10-13 16:42:18,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 74 transitions, 259 flow [2024-10-13 16:42:18,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 74 transitions, 259 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:42:18,752 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 115 flow [2024-10-13 16:42:18,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-10-13 16:42:18,763 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-10-13 16:42:18,763 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 115 flow [2024-10-13 16:42:18,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:18,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:18,764 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:42:18,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:42:18,765 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:42:18,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:18,765 INFO L85 PathProgramCache]: Analyzing trace with hash -371577310, now seen corresponding path program 1 times [2024-10-13 16:42:18,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:18,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936193313] [2024-10-13 16:42:18,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:18,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:42:18,801 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:42:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:42:18,856 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:42:18,858 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 16:42:18,861 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-10-13 16:42:18,863 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-10-13 16:42:18,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-10-13 16:42:18,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-10-13 16:42:18,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-10-13 16:42:18,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-10-13 16:42:18,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-10-13 16:42:18,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-10-13 16:42:18,866 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-10-13 16:42:18,866 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-10-13 16:42:18,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-10-13 16:42:18,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-10-13 16:42:18,868 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-10-13 16:42:18,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:42:18,869 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-13 16:42:18,873 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 16:42:18,873 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 16:42:18,905 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:42:18,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 93 transitions, 202 flow [2024-10-13 16:42:18,940 INFO L124 PetriNetUnfolderBase]: 21/142 cut-off events. [2024-10-13 16:42:18,941 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 16:42:18,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 142 events. 21/142 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 521 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2024-10-13 16:42:18,945 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 93 transitions, 202 flow [2024-10-13 16:42:18,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 93 transitions, 202 flow [2024-10-13 16:42:18,948 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:42:18,951 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;@22395454, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:42:18,951 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-13 16:42:18,955 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:42:18,955 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-10-13 16:42:18,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:42:18,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:18,956 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 16:42:18,956 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:42:18,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:18,957 INFO L85 PathProgramCache]: Analyzing trace with hash 440686544, now seen corresponding path program 1 times [2024-10-13 16:42:18,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:18,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717910220] [2024-10-13 16:42:18,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:18,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:19,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:19,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717910220] [2024-10-13 16:42:19,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717910220] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:19,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:42:19,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:42:19,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036749074] [2024-10-13 16:42:19,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:19,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:42:19,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:19,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:42:19,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:42:19,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2024-10-13 16:42:19,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:19,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:19,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2024-10-13 16:42:19,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:20,255 INFO L124 PetriNetUnfolderBase]: 4742/10057 cut-off events. [2024-10-13 16:42:20,255 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-13 16:42:20,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17647 conditions, 10057 events. 4742/10057 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 83395 event pairs, 2232 based on Foata normal form. 1787/10846 useless extension candidates. Maximal degree in co-relation 1308. Up to 7478 conditions per place. [2024-10-13 16:42:20,331 INFO L140 encePairwiseOnDemand]: 73/93 looper letters, 68 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2024-10-13 16:42:20,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 106 transitions, 370 flow [2024-10-13 16:42:20,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:42:20,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:42:20,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 240 transitions. [2024-10-13 16:42:20,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6451612903225806 [2024-10-13 16:42:20,336 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 202 flow. Second operand 4 states and 240 transitions. [2024-10-13 16:42:20,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 106 transitions, 370 flow [2024-10-13 16:42:20,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 106 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:42:20,340 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 198 flow [2024-10-13 16:42:20,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-10-13 16:42:20,341 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2024-10-13 16:42:20,341 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 198 flow [2024-10-13 16:42:20,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:20,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:20,342 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:42:20,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:42:20,342 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:42:20,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:20,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1076858080, now seen corresponding path program 1 times [2024-10-13 16:42:20,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:20,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922783320] [2024-10-13 16:42:20,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:20,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:20,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:20,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922783320] [2024-10-13 16:42:20,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922783320] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:20,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:42:20,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:42:20,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295381942] [2024-10-13 16:42:20,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:20,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:42:20,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:20,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:42:20,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:42:20,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 93 [2024-10-13 16:42:20,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:20,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:20,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 93 [2024-10-13 16:42:20,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:22,122 INFO L124 PetriNetUnfolderBase]: 6470/13423 cut-off events. [2024-10-13 16:42:22,123 INFO L125 PetriNetUnfolderBase]: For 514/897 co-relation queries the response was YES. [2024-10-13 16:42:22,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24353 conditions, 13423 events. 6470/13423 cut-off events. For 514/897 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 116695 event pairs, 1247 based on Foata normal form. 283/12590 useless extension candidates. Maximal degree in co-relation 23467. Up to 6083 conditions per place. [2024-10-13 16:42:22,234 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 163 selfloop transitions, 17 changer transitions 0/217 dead transitions. [2024-10-13 16:42:22,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 217 transitions, 888 flow [2024-10-13 16:42:22,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:42:22,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:42:22,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 434 transitions. [2024-10-13 16:42:22,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-13 16:42:22,240 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 198 flow. Second operand 7 states and 434 transitions. [2024-10-13 16:42:22,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 217 transitions, 888 flow [2024-10-13 16:42:22,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 217 transitions, 883 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:42:22,248 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 328 flow [2024-10-13 16:42:22,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=328, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2024-10-13 16:42:22,250 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 16 predicate places. [2024-10-13 16:42:22,250 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 328 flow [2024-10-13 16:42:22,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:22,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:22,251 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:42:22,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:42:22,251 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:42:22,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:22,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1539020073, now seen corresponding path program 1 times [2024-10-13 16:42:22,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:22,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105213098] [2024-10-13 16:42:22,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:22,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:22,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:22,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105213098] [2024-10-13 16:42:22,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105213098] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:42:22,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314774988] [2024-10-13 16:42:22,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:22,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:42:22,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:42:22,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:42:22,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:42:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:22,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:42:22,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:42:22,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:22,557 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:42:22,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314774988] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:22,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:42:22,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:42:22,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194093457] [2024-10-13 16:42:22,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:22,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:42:22,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:22,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:42:22,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:42:22,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2024-10-13 16:42:22,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 328 flow. Second operand has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:22,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:22,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2024-10-13 16:42:22,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:24,029 INFO L124 PetriNetUnfolderBase]: 6612/13216 cut-off events. [2024-10-13 16:42:24,029 INFO L125 PetriNetUnfolderBase]: For 4553/4553 co-relation queries the response was YES. [2024-10-13 16:42:24,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28116 conditions, 13216 events. 6612/13216 cut-off events. For 4553/4553 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 111425 event pairs, 1734 based on Foata normal form. 177/12431 useless extension candidates. Maximal degree in co-relation 27299. Up to 8145 conditions per place. [2024-10-13 16:42:24,147 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 145 selfloop transitions, 6 changer transitions 0/186 dead transitions. [2024-10-13 16:42:24,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 186 transitions, 916 flow [2024-10-13 16:42:24,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:42:24,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:42:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 329 transitions. [2024-10-13 16:42:24,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.589605734767025 [2024-10-13 16:42:24,153 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 328 flow. Second operand 6 states and 329 transitions. [2024-10-13 16:42:24,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 186 transitions, 916 flow [2024-10-13 16:42:24,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 186 transitions, 916 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:42:24,176 INFO L231 Difference]: Finished difference. Result has 102 places, 97 transitions, 336 flow [2024-10-13 16:42:24,176 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=102, PETRI_TRANSITIONS=97} [2024-10-13 16:42:24,177 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 20 predicate places. [2024-10-13 16:42:24,178 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 97 transitions, 336 flow [2024-10-13 16:42:24,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:24,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:24,178 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-13 16:42:24,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:42:24,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:42:24,380 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:42:24,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:24,381 INFO L85 PathProgramCache]: Analyzing trace with hash -464981523, now seen corresponding path program 1 times [2024-10-13 16:42:24,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:24,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136353394] [2024-10-13 16:42:24,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:24,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:42:24,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:24,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136353394] [2024-10-13 16:42:24,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136353394] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:24,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:42:24,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:42:24,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022741652] [2024-10-13 16:42:24,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:24,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:42:24,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:24,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:42:24,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:42:24,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2024-10-13 16:42:24,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 97 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:24,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:24,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2024-10-13 16:42:24,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:25,733 INFO L124 PetriNetUnfolderBase]: 6285/12608 cut-off events. [2024-10-13 16:42:25,734 INFO L125 PetriNetUnfolderBase]: For 5209/5209 co-relation queries the response was YES. [2024-10-13 16:42:25,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27284 conditions, 12608 events. 6285/12608 cut-off events. For 5209/5209 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 105262 event pairs, 1342 based on Foata normal form. 177/12049 useless extension candidates. Maximal degree in co-relation 26466. Up to 8674 conditions per place. [2024-10-13 16:42:25,846 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 120 selfloop transitions, 6 changer transitions 0/161 dead transitions. [2024-10-13 16:42:25,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 161 transitions, 798 flow [2024-10-13 16:42:25,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:42:25,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:42:25,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-10-13 16:42:25,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6236559139784946 [2024-10-13 16:42:25,848 INFO L175 Difference]: Start difference. First operand has 102 places, 97 transitions, 336 flow. Second operand 4 states and 232 transitions. [2024-10-13 16:42:25,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 161 transitions, 798 flow [2024-10-13 16:42:25,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 161 transitions, 782 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-10-13 16:42:25,874 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 336 flow [2024-10-13 16:42:25,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2024-10-13 16:42:25,875 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 18 predicate places. [2024-10-13 16:42:25,875 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 336 flow [2024-10-13 16:42:25,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:25,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:25,876 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-10-13 16:42:25,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:42:25,877 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:42:25,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:25,877 INFO L85 PathProgramCache]: Analyzing trace with hash -170630245, now seen corresponding path program 1 times [2024-10-13 16:42:25,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:25,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52195129] [2024-10-13 16:42:25,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:25,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:42:25,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:42:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:42:25,922 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:42:25,923 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 16:42:25,923 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-13 16:42:25,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-10-13 16:42:25,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-10-13 16:42:25,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-10-13 16:42:25,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-10-13 16:42:25,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-10-13 16:42:25,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-10-13 16:42:25,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-10-13 16:42:25,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-10-13 16:42:25,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-10-13 16:42:25,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-10-13 16:42:25,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-10-13 16:42:25,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-10-13 16:42:25,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-10-13 16:42:25,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-10-13 16:42:25,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-10-13 16:42:25,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-10-13 16:42:25,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:42:25,926 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-13 16:42:25,931 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 16:42:25,931 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 16:42:25,967 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 16:42:25,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 126 transitions, 279 flow [2024-10-13 16:42:26,023 INFO L124 PetriNetUnfolderBase]: 34/228 cut-off events. [2024-10-13 16:42:26,024 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 16:42:26,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 228 events. 34/228 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 942 event pairs, 1 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 157. Up to 12 conditions per place. [2024-10-13 16:42:26,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 126 transitions, 279 flow [2024-10-13 16:42:26,029 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 126 transitions, 279 flow [2024-10-13 16:42:26,030 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:42:26,031 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;@22395454, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:42:26,031 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-13 16:42:26,034 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:42:26,034 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-13 16:42:26,034 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:42:26,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:26,034 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 16:42:26,035 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)] === [2024-10-13 16:42:26,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:26,035 INFO L85 PathProgramCache]: Analyzing trace with hash 560958765, now seen corresponding path program 1 times [2024-10-13 16:42:26,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:26,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342264472] [2024-10-13 16:42:26,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:26,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:26,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:26,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342264472] [2024-10-13 16:42:26,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342264472] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:26,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:42:26,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:42:26,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498476035] [2024-10-13 16:42:26,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:26,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:42:26,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:26,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:42:26,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:42:26,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2024-10-13 16:42:26,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 126 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:26,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:26,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2024-10-13 16:42:26,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:38,672 INFO L124 PetriNetUnfolderBase]: 97039/174165 cut-off events. [2024-10-13 16:42:38,672 INFO L125 PetriNetUnfolderBase]: For 2042/2042 co-relation queries the response was YES. [2024-10-13 16:42:39,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309817 conditions, 174165 events. 97039/174165 cut-off events. For 2042/2042 co-relation queries the response was YES. Maximal size of possible extension queue 3698. Compared 1826693 event pairs, 63133 based on Foata normal form. 34646/193364 useless extension candidates. Maximal degree in co-relation 18235. Up to 134303 conditions per place. [2024-10-13 16:42:40,169 INFO L140 encePairwiseOnDemand]: 100/126 looper letters, 82 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2024-10-13 16:42:40,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 133 transitions, 463 flow [2024-10-13 16:42:40,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:42:40,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:42:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2024-10-13 16:42:40,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-10-13 16:42:40,172 INFO L175 Difference]: Start difference. First operand has 110 places, 126 transitions, 279 flow. Second operand 4 states and 312 transitions. [2024-10-13 16:42:40,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 133 transitions, 463 flow [2024-10-13 16:42:40,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 133 transitions, 463 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:42:40,177 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 263 flow [2024-10-13 16:42:40,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2024-10-13 16:42:40,179 INFO L277 CegarLoopForPetriNet]: 110 programPoint places, 5 predicate places. [2024-10-13 16:42:40,179 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 263 flow [2024-10-13 16:42:40,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:40,180 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:42:40,180 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:42:40,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:42:40,180 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:42:40,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:42:40,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1336970143, now seen corresponding path program 1 times [2024-10-13 16:42:40,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:42:40,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404404100] [2024-10-13 16:42:40,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:42:40,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:42:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:42:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:42:40,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:42:40,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404404100] [2024-10-13 16:42:40,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404404100] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:42:40,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:42:40,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:42:40,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757253558] [2024-10-13 16:42:40,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:42:40,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:42:40,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:42:40,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:42:40,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:42:40,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 126 [2024-10-13 16:42:40,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:42:40,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:42:40,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 126 [2024-10-13 16:42:40,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:42:58,537 INFO L124 PetriNetUnfolderBase]: 147779/252738 cut-off events. [2024-10-13 16:42:58,537 INFO L125 PetriNetUnfolderBase]: For 8857/14440 co-relation queries the response was YES. [2024-10-13 16:42:59,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466459 conditions, 252738 events. 147779/252738 cut-off events. For 8857/14440 co-relation queries the response was YES. Maximal size of possible extension queue 5657. Compared 2649834 event pairs, 40828 based on Foata normal form. 4265/238369 useless extension candidates. Maximal degree in co-relation 466351. Up to 125335 conditions per place. [2024-10-13 16:43:00,614 INFO L140 encePairwiseOnDemand]: 114/126 looper letters, 247 selfloop transitions, 26 changer transitions 0/323 dead transitions. [2024-10-13 16:43:00,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 323 transitions, 1340 flow [2024-10-13 16:43:00,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:43:00,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:43:00,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 618 transitions. [2024-10-13 16:43:00,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7006802721088435 [2024-10-13 16:43:00,617 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 263 flow. Second operand 7 states and 618 transitions. [2024-10-13 16:43:00,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 323 transitions, 1340 flow [2024-10-13 16:43:00,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 323 transitions, 1335 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:43:00,643 INFO L231 Difference]: Finished difference. Result has 126 places, 137 transitions, 463 flow [2024-10-13 16:43:00,644 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=463, PETRI_PLACES=126, PETRI_TRANSITIONS=137} [2024-10-13 16:43:00,644 INFO L277 CegarLoopForPetriNet]: 110 programPoint places, 16 predicate places. [2024-10-13 16:43:00,644 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 137 transitions, 463 flow [2024-10-13 16:43:00,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:00,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:43:00,645 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:43:00,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 16:43:00,645 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:43:00,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:43:00,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1991261431, now seen corresponding path program 1 times [2024-10-13 16:43:00,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:43:00,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104415057] [2024-10-13 16:43:00,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:00,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:43:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:00,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:43:00,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:43:00,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104415057] [2024-10-13 16:43:00,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104415057] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:43:00,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772500749] [2024-10-13 16:43:00,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:00,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:43:00,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:43:00,725 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:43:00,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:43:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:00,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:43:00,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:43:00,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:43:00,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:43:00,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772500749] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:43:00,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:43:00,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:43:00,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868775694] [2024-10-13 16:43:00,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:43:00,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:43:00,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:43:00,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:43:00,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:43:00,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2024-10-13 16:43:00,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 137 transitions, 463 flow. Second operand has 6 states, 6 states have (on average 49.5) internal successors, (297), 6 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:00,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:43:00,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2024-10-13 16:43:00,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand