./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_94-alloc_region_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_94-alloc_region_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 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:44:29,543 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:44:29,634 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:44:29,640 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:44:29,642 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:44:29,673 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:44:29,674 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:44:29,674 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:44:29,675 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:44:29,675 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:44:29,677 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:44:29,678 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:44:29,679 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:44:29,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:44:29,681 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:44:29,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:44:29,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:44:29,682 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:44:29,682 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:44:29,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:44:29,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:44:29,686 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:44:29,686 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:44:29,686 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:44:29,686 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:44:29,687 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:44:29,687 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:44:29,687 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:44:29,687 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:44:29,687 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:44:29,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:44:29,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:44:29,688 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:44:29,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:44:29,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:44:29,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:44:29,690 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:44:29,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:44:29,690 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:44:29,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:44:29,691 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:44:29,691 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:44:29,691 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:44:29,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:44:29,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 [2024-10-13 16:44:29,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:44:29,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:44:29,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:44:29,970 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:44:29,971 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:44:29,972 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2024-10-13 16:44:31,478 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:44:31,765 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:44:31,766 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2024-10-13 16:44:31,788 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64cdb7639/e149c57a63cf4d2d889a9965076d0560/FLAG0f2ca7120 [2024-10-13 16:44:32,050 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64cdb7639/e149c57a63cf4d2d889a9965076d0560 [2024-10-13 16:44:32,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:44:32,054 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:44:32,055 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:44:32,055 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:44:32,060 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:44:32,061 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:44:32" (1/1) ... [2024-10-13 16:44:32,061 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@abf1fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:32, skipping insertion in model container [2024-10-13 16:44:32,062 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:44:32" (1/1) ... [2024-10-13 16:44:32,115 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:44:32,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:44:32,651 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:44:32,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:44:32,796 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:44:32,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:32 WrapperNode [2024-10-13 16:44:32,797 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:44:32,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:44:32,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:44:32,798 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:44:32,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:32" (1/1) ... [2024-10-13 16:44:32,826 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:32" (1/1) ... [2024-10-13 16:44:32,856 INFO L138 Inliner]: procedures = 378, calls = 83, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 282 [2024-10-13 16:44:32,857 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:44:32,857 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:44:32,857 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:44:32,858 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:44:32,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:32" (1/1) ... [2024-10-13 16:44:32,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:32" (1/1) ... [2024-10-13 16:44:32,891 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:32" (1/1) ... [2024-10-13 16:44:32,915 INFO L175 MemorySlicer]: Split 47 memory accesses to 7 slices as follows [2, 5, 2, 5, 5, 20, 8]. 43 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 5, 0, 5, 5, 0, 1]. The 16 writes are split as follows [0, 0, 1, 0, 0, 12, 3]. [2024-10-13 16:44:32,915 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:32" (1/1) ... [2024-10-13 16:44:32,915 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:32" (1/1) ... [2024-10-13 16:44:32,942 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:32" (1/1) ... [2024-10-13 16:44:32,946 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:32" (1/1) ... [2024-10-13 16:44:32,950 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:32" (1/1) ... [2024-10-13 16:44:32,952 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:32" (1/1) ... [2024-10-13 16:44:32,957 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:44:32,958 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:44:32,958 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:44:32,958 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:44:32,959 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:32" (1/1) ... [2024-10-13 16:44:32,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:44:32,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:44:33,005 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 16:44:33,007 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 16:44:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 16:44:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-13 16:44:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-13 16:44:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-13 16:44:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-13 16:44:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-10-13 16:44:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-10-13 16:44:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-10-13 16:44:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 16:44:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-13 16:44:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-13 16:44:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-13 16:44:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-10-13 16:44:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-10-13 16:44:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-10-13 16:44:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-10-13 16:44:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 16:44:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:44:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:44:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 16:44:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 16:44:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-13 16:44:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-13 16:44:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-13 16:44:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:44:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:44:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 16:44:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 16:44:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-13 16:44:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-13 16:44:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-13 16:44:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 16:44:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:44:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:44:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-13 16:44:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-13 16:44:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-13 16:44:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-13 16:44:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-10-13 16:44:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-10-13 16:44:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-10-13 16:44:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 16:44:33,064 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 16:44:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:44:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:44:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 16:44:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 16:44:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-13 16:44:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-13 16:44:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-13 16:44:33,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:44:33,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:44:33,068 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 16:44:33,302 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:44:33,304 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:44:33,836 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:44:33,836 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:44:34,133 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:44:34,134 INFO L314 CfgBuilder]: Removed 23 assume(true) statements. [2024-10-13 16:44:34,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:44:34 BoogieIcfgContainer [2024-10-13 16:44:34,135 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:44:34,137 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:44:34,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:44:34,141 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:44:34,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:44:32" (1/3) ... [2024-10-13 16:44:34,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cdaff46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:44:34, skipping insertion in model container [2024-10-13 16:44:34,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:32" (2/3) ... [2024-10-13 16:44:34,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cdaff46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:44:34, skipping insertion in model container [2024-10-13 16:44:34,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:44:34" (3/3) ... [2024-10-13 16:44:34,145 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2024-10-13 16:44:34,164 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:44:34,165 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-13 16:44:34,165 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:44:34,222 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-13 16:44:34,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 118 transitions, 243 flow [2024-10-13 16:44:34,323 INFO L124 PetriNetUnfolderBase]: 38/174 cut-off events. [2024-10-13 16:44:34,323 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 16:44:34,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 174 events. 38/174 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 624 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 109. Up to 8 conditions per place. [2024-10-13 16:44:34,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 118 transitions, 243 flow [2024-10-13 16:44:34,337 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 117 transitions, 241 flow [2024-10-13 16:44:34,353 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:44:34,362 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;@44272cc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:44:34,362 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-13 16:44:34,369 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:44:34,370 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-13 16:44:34,370 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:44:34,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:34,371 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 16:44:34,372 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:44:34,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:34,378 INFO L85 PathProgramCache]: Analyzing trace with hash 716767422, now seen corresponding path program 1 times [2024-10-13 16:44:34,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:34,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025940316] [2024-10-13 16:44:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:34,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:34,840 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 16:44:34,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:34,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025940316] [2024-10-13 16:44:34,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025940316] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:34,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:44:34,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:44:34,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341473887] [2024-10-13 16:44:34,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:34,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:44:34,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:34,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:44:34,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:44:34,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 118 [2024-10-13 16:44:34,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 117 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 16:44:34,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:34,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 118 [2024-10-13 16:44:34,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:35,622 INFO L124 PetriNetUnfolderBase]: 654/1733 cut-off events. [2024-10-13 16:44:35,624 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 16:44:35,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3033 conditions, 1733 events. 654/1733 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 11525 event pairs, 0 based on Foata normal form. 356/1924 useless extension candidates. Maximal degree in co-relation 2993. Up to 1228 conditions per place. [2024-10-13 16:44:35,646 INFO L140 encePairwiseOnDemand]: 91/118 looper letters, 94 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2024-10-13 16:44:35,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 137 transitions, 475 flow [2024-10-13 16:44:35,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:44:35,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:44:35,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 301 transitions. [2024-10-13 16:44:35,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6377118644067796 [2024-10-13 16:44:35,668 INFO L175 Difference]: Start difference. First operand has 96 places, 117 transitions, 241 flow. Second operand 4 states and 301 transitions. [2024-10-13 16:44:35,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 137 transitions, 475 flow [2024-10-13 16:44:35,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 137 transitions, 475 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:44:35,681 INFO L231 Difference]: Finished difference. Result has 98 places, 94 transitions, 205 flow [2024-10-13 16:44:35,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=98, PETRI_TRANSITIONS=94} [2024-10-13 16:44:35,689 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2024-10-13 16:44:35,690 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 94 transitions, 205 flow [2024-10-13 16:44:35,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 16:44:35,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:35,690 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:35,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:44:35,691 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-13 16:44:35,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:35,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1358395495, now seen corresponding path program 1 times [2024-10-13 16:44:35,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:35,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259528109] [2024-10-13 16:44:35,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:35,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:44:35,763 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:44:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:44:35,834 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:44:35,834 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 16:44:35,836 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-13 16:44:35,838 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-10-13 16:44:35,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-10-13 16:44:35,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-10-13 16:44:35,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-10-13 16:44:35,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-10-13 16:44:35,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-10-13 16:44:35,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-10-13 16:44:35,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-10-13 16:44:35,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-10-13 16:44:35,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-10-13 16:44:35,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-10-13 16:44:35,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-10-13 16:44:35,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-10-13 16:44:35,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-10-13 16:44:35,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-10-13 16:44:35,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-10-13 16:44:35,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:44:35,844 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-13 16:44:35,849 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 16:44:35,849 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 16:44:35,906 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:44:35,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 168 transitions, 352 flow [2024-10-13 16:44:35,947 INFO L124 PetriNetUnfolderBase]: 64/299 cut-off events. [2024-10-13 16:44:35,947 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 16:44:35,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 299 events. 64/299 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1331 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 182. Up to 12 conditions per place. [2024-10-13 16:44:35,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 168 transitions, 352 flow [2024-10-13 16:44:35,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 168 transitions, 352 flow [2024-10-13 16:44:35,957 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:44:35,959 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;@44272cc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:44:35,959 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-13 16:44:35,985 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:44:35,985 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-13 16:44:35,985 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:44:35,985 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:35,985 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 16:44:35,986 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:44:35,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:35,986 INFO L85 PathProgramCache]: Analyzing trace with hash 877136790, now seen corresponding path program 1 times [2024-10-13 16:44:35,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:35,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636389004] [2024-10-13 16:44:35,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:35,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:36,097 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 16:44:36,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:36,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636389004] [2024-10-13 16:44:36,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636389004] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:36,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:44:36,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:44:36,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240657280] [2024-10-13 16:44:36,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:36,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:44:36,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:36,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:44:36,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:44:36,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 168 [2024-10-13 16:44:36,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 168 transitions, 352 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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 16:44:36,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:36,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 168 [2024-10-13 16:44:36,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:42,677 INFO L124 PetriNetUnfolderBase]: 31564/62932 cut-off events. [2024-10-13 16:44:42,677 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-10-13 16:44:42,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110016 conditions, 62932 events. 31564/62932 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 1440. Compared 635579 event pairs, 15870 based on Foata normal form. 12316/68819 useless extension candidates. Maximal degree in co-relation 13517. Up to 46900 conditions per place. [2024-10-13 16:44:43,074 INFO L140 encePairwiseOnDemand]: 131/168 looper letters, 122 selfloop transitions, 3 changer transitions 0/182 dead transitions. [2024-10-13 16:44:43,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 182 transitions, 630 flow [2024-10-13 16:44:43,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:44:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:44:43,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2024-10-13 16:44:43,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6056547619047619 [2024-10-13 16:44:43,081 INFO L175 Difference]: Start difference. First operand has 136 places, 168 transitions, 352 flow. Second operand 4 states and 407 transitions. [2024-10-13 16:44:43,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 182 transitions, 630 flow [2024-10-13 16:44:43,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 182 transitions, 630 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:44:43,090 INFO L231 Difference]: Finished difference. Result has 141 places, 139 transitions, 314 flow [2024-10-13 16:44:43,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=141, PETRI_TRANSITIONS=139} [2024-10-13 16:44:43,091 INFO L277 CegarLoopForPetriNet]: 136 programPoint places, 5 predicate places. [2024-10-13 16:44:43,093 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 139 transitions, 314 flow [2024-10-13 16:44:43,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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 16:44:43,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:43,093 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:43,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:44:43,094 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:44:43,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:43,094 INFO L85 PathProgramCache]: Analyzing trace with hash 829583602, now seen corresponding path program 1 times [2024-10-13 16:44:43,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:43,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529100582] [2024-10-13 16:44:43,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:43,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:43,236 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 16:44:43,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:43,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529100582] [2024-10-13 16:44:43,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529100582] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:44:43,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5586801] [2024-10-13 16:44:43,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:43,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:43,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:44:43,240 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 16:44:43,241 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 16:44:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:43,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:44:43,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:44:43,472 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 16:44:43,473 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:44:43,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5586801] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:43,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:44:43,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:44:43,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766063121] [2024-10-13 16:44:43,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:43,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:44:43,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:43,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:44:43,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:44:43,487 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 168 [2024-10-13 16:44:43,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 139 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 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 16:44:43,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:43,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 168 [2024-10-13 16:44:43,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:48,579 INFO L124 PetriNetUnfolderBase]: 30043/55983 cut-off events. [2024-10-13 16:44:48,580 INFO L125 PetriNetUnfolderBase]: For 1958/1958 co-relation queries the response was YES. [2024-10-13 16:44:48,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103356 conditions, 55983 events. 30043/55983 cut-off events. For 1958/1958 co-relation queries the response was YES. Maximal size of possible extension queue 1318. Compared 538455 event pairs, 902 based on Foata normal form. 484/51695 useless extension candidates. Maximal degree in co-relation 6149. Up to 38475 conditions per place. [2024-10-13 16:44:48,927 INFO L140 encePairwiseOnDemand]: 163/168 looper letters, 202 selfloop transitions, 6 changer transitions 0/265 dead transitions. [2024-10-13 16:44:48,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 265 transitions, 980 flow [2024-10-13 16:44:48,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:44:48,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:44:48,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 551 transitions. [2024-10-13 16:44:48,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5466269841269841 [2024-10-13 16:44:48,930 INFO L175 Difference]: Start difference. First operand has 141 places, 139 transitions, 314 flow. Second operand 6 states and 551 transitions. [2024-10-13 16:44:48,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 265 transitions, 980 flow [2024-10-13 16:44:48,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 265 transitions, 978 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:44:48,942 INFO L231 Difference]: Finished difference. Result has 144 places, 138 transitions, 320 flow [2024-10-13 16:44:48,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=144, PETRI_TRANSITIONS=138} [2024-10-13 16:44:48,947 INFO L277 CegarLoopForPetriNet]: 136 programPoint places, 8 predicate places. [2024-10-13 16:44:48,948 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 138 transitions, 320 flow [2024-10-13 16:44:48,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 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 16:44:48,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:48,948 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-13 16:44:48,969 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 16:44:49,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:49,150 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:44:49,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:49,155 INFO L85 PathProgramCache]: Analyzing trace with hash -52711212, now seen corresponding path program 1 times [2024-10-13 16:44:49,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:49,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115590434] [2024-10-13 16:44:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:49,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:49,228 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 16:44:49,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:49,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115590434] [2024-10-13 16:44:49,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115590434] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:49,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:44:49,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:44:49,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358920708] [2024-10-13 16:44:49,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:49,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:44:49,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:49,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:44:49,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:44:49,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 168 [2024-10-13 16:44:49,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 138 transitions, 320 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 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 16:44:49,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:49,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 168 [2024-10-13 16:44:49,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:53,936 INFO L124 PetriNetUnfolderBase]: 29718/57958 cut-off events. [2024-10-13 16:44:53,937 INFO L125 PetriNetUnfolderBase]: For 3965/3965 co-relation queries the response was YES. [2024-10-13 16:44:54,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105637 conditions, 57958 events. 29718/57958 cut-off events. For 3965/3965 co-relation queries the response was YES. Maximal size of possible extension queue 1373. Compared 576768 event pairs, 3298 based on Foata normal form. 484/53751 useless extension candidates. Maximal degree in co-relation 72522. Up to 40590 conditions per place. [2024-10-13 16:44:54,488 INFO L140 encePairwiseOnDemand]: 163/168 looper letters, 159 selfloop transitions, 6 changer transitions 0/222 dead transitions. [2024-10-13 16:44:54,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 222 transitions, 816 flow [2024-10-13 16:44:54,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:44:54,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:44:54,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 392 transitions. [2024-10-13 16:44:54,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-13 16:44:54,491 INFO L175 Difference]: Start difference. First operand has 144 places, 138 transitions, 320 flow. Second operand 4 states and 392 transitions. [2024-10-13 16:44:54,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 222 transitions, 816 flow [2024-10-13 16:44:54,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 222 transitions, 800 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-10-13 16:44:54,508 INFO L231 Difference]: Finished difference. Result has 142 places, 138 transitions, 320 flow [2024-10-13 16:44:54,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=142, PETRI_TRANSITIONS=138} [2024-10-13 16:44:54,510 INFO L277 CegarLoopForPetriNet]: 136 programPoint places, 6 predicate places. [2024-10-13 16:44:54,510 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 138 transitions, 320 flow [2024-10-13 16:44:54,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 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 16:44:54,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:54,511 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-10-13 16:44:54,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:44:54,511 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-13 16:44:54,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:54,512 INFO L85 PathProgramCache]: Analyzing trace with hash 884164285, now seen corresponding path program 1 times [2024-10-13 16:44:54,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:54,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571096336] [2024-10-13 16:44:54,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:54,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:44:54,548 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:44:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:44:54,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:44:54,582 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 16:44:54,582 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-10-13 16:44:54,583 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2024-10-13 16:44:54,583 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2024-10-13 16:44:54,583 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2024-10-13 16:44:54,583 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2024-10-13 16:44:54,583 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2024-10-13 16:44:54,583 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2024-10-13 16:44:54,584 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2024-10-13 16:44:54,584 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2024-10-13 16:44:54,584 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2024-10-13 16:44:54,584 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2024-10-13 16:44:54,584 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2024-10-13 16:44:54,584 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2024-10-13 16:44:54,585 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2024-10-13 16:44:54,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2024-10-13 16:44:54,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2024-10-13 16:44:54,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2024-10-13 16:44:54,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2024-10-13 16:44:54,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2024-10-13 16:44:54,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2024-10-13 16:44:54,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2024-10-13 16:44:54,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:44:54,590 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-13 16:44:54,590 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 16:44:54,590 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 16:44:54,650 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 16:44:54,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 218 transitions, 463 flow [2024-10-13 16:44:54,703 INFO L124 PetriNetUnfolderBase]: 93/443 cut-off events. [2024-10-13 16:44:54,703 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 16:44:54,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 443 events. 93/443 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2165 event pairs, 1 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 314. Up to 16 conditions per place. [2024-10-13 16:44:54,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 218 transitions, 463 flow [2024-10-13 16:44:54,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 218 transitions, 463 flow [2024-10-13 16:44:54,716 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:44:54,716 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;@44272cc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:44:54,717 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-10-13 16:44:54,719 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:44:54,719 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-10-13 16:44:54,719 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:44:54,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:54,719 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 16:44:54,720 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-13 16:44:54,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:54,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1085221408, now seen corresponding path program 1 times [2024-10-13 16:44:54,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:54,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906669097] [2024-10-13 16:44:54,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:54,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:54,785 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 16:44:54,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:54,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906669097] [2024-10-13 16:44:54,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906669097] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:54,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:44:54,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:44:54,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332135081] [2024-10-13 16:44:54,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:54,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:44:54,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:54,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:44:54,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:44:54,794 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 218 [2024-10-13 16:44:54,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 218 transitions, 463 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:44:54,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:54,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 218 [2024-10-13 16:44:54,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand