./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.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 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:06:45,796 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:06:45,868 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:06:45,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:06:45,877 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:06:45,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:06:45,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:06:45,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:06:45,908 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:06:45,910 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:06:45,910 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:06:45,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:06:45,911 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:06:45,911 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:06:45,914 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:06:45,914 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:06:45,914 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:06:45,915 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:06:45,915 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:06:45,915 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:06:45,916 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:06:45,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:06:45,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:06:45,921 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:06:45,921 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:06:45,921 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:06:45,921 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:06:45,921 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:06:45,922 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:06:45,922 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:06:45,922 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:06:45,922 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:06:45,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:06:45,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:06:45,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:06:45,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:06:45,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:06:45,924 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:06:45,924 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:06:45,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:06:45,926 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:06:45,926 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:06:45,927 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:06:45,927 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:06:45,927 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 [2024-11-09 15:06:46,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:06:46,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:06:46,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:06:46,187 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:06:46,187 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:06:46,188 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2024-11-09 15:06:47,654 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:06:47,920 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:06:47,921 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2024-11-09 15:06:47,943 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3efcac92/8e11aa4c54bb444190765e24601d1cba/FLAGbf94fbf54 [2024-11-09 15:06:47,961 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3efcac92/8e11aa4c54bb444190765e24601d1cba [2024-11-09 15:06:47,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:06:47,965 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:06:47,967 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:06:47,967 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:06:47,973 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:06:47,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:06:47" (1/1) ... [2024-11-09 15:06:47,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@486d2acf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:47, skipping insertion in model container [2024-11-09 15:06:47,976 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:06:47" (1/1) ... [2024-11-09 15:06:48,027 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:06:48,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:06:48,832 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:06:48,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:06:48,991 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:06:48,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:48 WrapperNode [2024-11-09 15:06:48,992 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:06:48,993 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:06:48,993 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:06:48,993 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:06:49,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:48" (1/1) ... [2024-11-09 15:06:49,068 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:48" (1/1) ... [2024-11-09 15:06:49,176 INFO L138 Inliner]: procedures = 280, calls = 1605, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1802 [2024-11-09 15:06:49,177 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:06:49,177 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:06:49,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:06:49,178 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:06:49,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:48" (1/1) ... [2024-11-09 15:06:49,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:48" (1/1) ... [2024-11-09 15:06:49,219 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:48" (1/1) ... [2024-11-09 15:06:49,338 INFO L175 MemorySlicer]: Split 1569 memory accesses to 8 slices as follows [2, 5, 259, 5, 1280, 2, 14, 2]. 82 percent of accesses are in the largest equivalence class. The 1548 initializations are split as follows [2, 5, 256, 5, 1280, 0, 0, 0]. The 11 writes are split as follows [0, 0, 1, 0, 0, 1, 8, 1]. [2024-11-09 15:06:49,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:48" (1/1) ... [2024-11-09 15:06:49,339 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:48" (1/1) ... [2024-11-09 15:06:49,393 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:48" (1/1) ... [2024-11-09 15:06:49,403 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:48" (1/1) ... [2024-11-09 15:06:49,420 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:48" (1/1) ... [2024-11-09 15:06:49,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:48" (1/1) ... [2024-11-09 15:06:49,447 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:06:49,449 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:06:49,449 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:06:49,449 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:06:49,451 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:48" (1/1) ... [2024-11-09 15:06:49,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:06:49,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:49,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 15:06:49,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 15:06:49,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 15:06:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 15:06:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 15:06:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-09 15:06:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-09 15:06:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-09 15:06:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-09 15:06:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-09 15:06:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-09 15:06:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-09 15:06:49,533 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-09 15:06:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 15:06:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-09 15:06:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-09 15:06:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-09 15:06:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-09 15:06:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-09 15:06:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-09 15:06:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-09 15:06:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-09 15:06:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 15:06:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:06:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:06:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 15:06:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 15:06:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 15:06:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-09 15:06:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-09 15:06:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-09 15:06:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-09 15:06:49,536 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-09 15:06:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:06:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:06:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 15:06:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 15:06:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 15:06:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-09 15:06:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-09 15:06:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-09 15:06:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 15:06:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:06:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:06:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 15:06:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 15:06:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-09 15:06:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-09 15:06:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-09 15:06:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-09 15:06:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-09 15:06:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-09 15:06:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:06:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:06:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 15:06:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 15:06:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 15:06:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-09 15:06:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-09 15:06:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-09 15:06:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:06:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:06:49,542 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:06:49,762 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:06:49,765 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:06:51,685 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:06:51,685 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:07:31,670 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:07:31,671 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-11-09 15:07:31,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:07:31 BoogieIcfgContainer [2024-11-09 15:07:31,671 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:07:31,673 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:07:31,673 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:07:31,678 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:07:31,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:06:47" (1/3) ... [2024-11-09 15:07:31,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7e86d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:07:31, skipping insertion in model container [2024-11-09 15:07:31,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:48" (2/3) ... [2024-11-09 15:07:31,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7e86d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:07:31, skipping insertion in model container [2024-11-09 15:07:31,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:07:31" (3/3) ... [2024-11-09 15:07:31,680 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2024-11-09 15:07:31,700 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:07:31,700 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-11-09 15:07:31,700 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:07:31,821 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-09 15:07:31,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 100 transitions, 220 flow [2024-11-09 15:07:32,021 INFO L124 PetriNetUnfolderBase]: 35/203 cut-off events. [2024-11-09 15:07:32,021 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-09 15:07:32,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 203 events. 35/203 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 845 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 99. Up to 8 conditions per place. [2024-11-09 15:07:32,029 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 100 transitions, 220 flow [2024-11-09 15:07:32,035 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 100 transitions, 220 flow [2024-11-09 15:07:32,044 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:07:32,051 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;@2b8d60d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:07:32,053 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-09 15:07:32,129 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:07:32,130 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:07:32,131 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:07:32,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:32,132 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:07:32,132 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-09 15:07:32,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:32,138 INFO L85 PathProgramCache]: Analyzing trace with hash 3764163, now seen corresponding path program 1 times [2024-11-09 15:07:32,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:32,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976971741] [2024-11-09 15:07:32,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:32,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:33,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:33,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976971741] [2024-11-09 15:07:33,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976971741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:33,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:33,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:07:33,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450131640] [2024-11-09 15:07:33,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:33,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:33,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:33,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:33,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:33,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-11-09 15:07:33,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 100 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:33,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:33,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-11-09 15:07:33,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:34,383 INFO L124 PetriNetUnfolderBase]: 2462/5038 cut-off events. [2024-11-09 15:07:34,384 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2024-11-09 15:07:34,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9067 conditions, 5038 events. 2462/5038 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 33639 event pairs, 2279 based on Foata normal form. 349/4542 useless extension candidates. Maximal degree in co-relation 7642. Up to 3942 conditions per place. [2024-11-09 15:07:34,424 INFO L140 encePairwiseOnDemand]: 83/100 looper letters, 53 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2024-11-09 15:07:34,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 314 flow [2024-11-09 15:07:34,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:07:34,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:07:34,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-11-09 15:07:34,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-09 15:07:34,438 INFO L175 Difference]: Start difference. First operand has 87 places, 100 transitions, 220 flow. Second operand 4 states and 210 transitions. [2024-11-09 15:07:34,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 314 flow [2024-11-09 15:07:34,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:07:34,447 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 222 flow [2024-11-09 15:07:34,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2024-11-09 15:07:34,455 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2024-11-09 15:07:34,455 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 222 flow [2024-11-09 15:07:34,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:34,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:34,456 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:07:34,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:07:34,457 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-09 15:07:34,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:34,458 INFO L85 PathProgramCache]: Analyzing trace with hash 472790556, now seen corresponding path program 1 times [2024-11-09 15:07:34,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:34,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129842355] [2024-11-09 15:07:34,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:34,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:35,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:35,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129842355] [2024-11-09 15:07:35,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129842355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:35,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572979368] [2024-11-09 15:07:35,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:35,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:35,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:35,143 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) [2024-11-09 15:07:35,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:07:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:35,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 3762 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:07:35,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:35,890 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:07:35,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572979368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:35,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:07:35,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:07:35,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770468998] [2024-11-09 15:07:35,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:35,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:07:35,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:35,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:07:35,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:07:35,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-11-09 15:07:35,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 91 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:35,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:35,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-11-09 15:07:35,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:36,822 INFO L124 PetriNetUnfolderBase]: 2462/5037 cut-off events. [2024-11-09 15:07:36,822 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-11-09 15:07:36,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9077 conditions, 5037 events. 2462/5037 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 33601 event pairs, 2279 based on Foata normal form. 1/4193 useless extension candidates. Maximal degree in co-relation 9058. Up to 3937 conditions per place. [2024-11-09 15:07:36,859 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 49 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2024-11-09 15:07:36,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 90 transitions, 328 flow [2024-11-09 15:07:36,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:07:36,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:07:36,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 266 transitions. [2024-11-09 15:07:36,863 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44333333333333336 [2024-11-09 15:07:36,863 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 222 flow. Second operand 6 states and 266 transitions. [2024-11-09 15:07:36,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 90 transitions, 328 flow [2024-11-09 15:07:36,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 90 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:07:36,867 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 228 flow [2024-11-09 15:07:36,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2024-11-09 15:07:36,868 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 8 predicate places. [2024-11-09 15:07:36,868 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 228 flow [2024-11-09 15:07:36,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:36,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:36,869 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:07:36,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 15:07:37,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:37,075 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-09 15:07:37,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:37,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1771609136, now seen corresponding path program 1 times [2024-11-09 15:07:37,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:37,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173511469] [2024-11-09 15:07:37,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:37,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:07:37,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:37,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173511469] [2024-11-09 15:07:37,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173511469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:37,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:37,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:07:37,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605790775] [2024-11-09 15:07:37,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:37,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:07:37,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:37,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:07:37,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:07:37,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-11-09 15:07:37,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:37,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:37,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-11-09 15:07:37,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:38,442 INFO L124 PetriNetUnfolderBase]: 2462/5036 cut-off events. [2024-11-09 15:07:38,443 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-11-09 15:07:38,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9079 conditions, 5036 events. 2462/5036 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 33598 event pairs, 2279 based on Foata normal form. 1/4193 useless extension candidates. Maximal degree in co-relation 9054. Up to 3940 conditions per place. [2024-11-09 15:07:38,472 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 50 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2024-11-09 15:07:38,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 89 transitions, 332 flow [2024-11-09 15:07:38,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:07:38,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:07:38,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2024-11-09 15:07:38,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-11-09 15:07:38,476 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 228 flow. Second operand 3 states and 158 transitions. [2024-11-09 15:07:38,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 89 transitions, 332 flow [2024-11-09 15:07:38,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 89 transitions, 310 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-09 15:07:38,481 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 210 flow [2024-11-09 15:07:38,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2024-11-09 15:07:38,484 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2024-11-09 15:07:38,484 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 210 flow [2024-11-09 15:07:38,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:38,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:38,484 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:38,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 15:07:38,485 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-09 15:07:38,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:38,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1708754347, now seen corresponding path program 1 times [2024-11-09 15:07:38,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:38,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658891885] [2024-11-09 15:07:38,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:38,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:38,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:38,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:38,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658891885] [2024-11-09 15:07:38,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658891885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:38,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373791935] [2024-11-09 15:07:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:38,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:38,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:38,969 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) [2024-11-09 15:07:38,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:07:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:39,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 3751 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:07:39,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:39,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:39,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:39,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:39,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373791935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:39,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:39,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-09 15:07:39,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808255893] [2024-11-09 15:07:39,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:39,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:07:39,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:39,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:07:39,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:07:39,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-11-09 15:07:39,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 210 flow. Second operand has 10 states, 10 states have (on average 36.3) internal successors, (363), 10 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:39,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:39,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-11-09 15:07:39,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:40,630 INFO L124 PetriNetUnfolderBase]: 2462/5040 cut-off events. [2024-11-09 15:07:40,631 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2024-11-09 15:07:40,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9082 conditions, 5040 events. 2462/5040 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 33592 event pairs, 2279 based on Foata normal form. 2/4199 useless extension candidates. Maximal degree in co-relation 9047. Up to 3938 conditions per place. [2024-11-09 15:07:40,665 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2024-11-09 15:07:40,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 92 transitions, 339 flow [2024-11-09 15:07:40,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:07:40,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:07:40,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2024-11-09 15:07:40,670 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4342857142857143 [2024-11-09 15:07:40,670 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 210 flow. Second operand 7 states and 304 transitions. [2024-11-09 15:07:40,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 92 transitions, 339 flow [2024-11-09 15:07:40,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 92 transitions, 325 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:07:40,677 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 236 flow [2024-11-09 15:07:40,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2024-11-09 15:07:40,679 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2024-11-09 15:07:40,679 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 236 flow [2024-11-09 15:07:40,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 36.3) internal successors, (363), 10 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:40,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:40,680 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:40,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 15:07:40,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 15:07:40,881 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-09 15:07:40,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:40,884 INFO L85 PathProgramCache]: Analyzing trace with hash 37663499, now seen corresponding path program 2 times [2024-11-09 15:07:40,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:40,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489335501] [2024-11-09 15:07:40,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:40,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:07:41,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:41,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489335501] [2024-11-09 15:07:41,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489335501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:41,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:41,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:07:41,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455671691] [2024-11-09 15:07:41,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:41,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:41,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:41,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:41,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:41,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 100 [2024-11-09 15:07:41,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:41,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:41,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 100 [2024-11-09 15:07:41,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:41,985 INFO L124 PetriNetUnfolderBase]: 2387/4834 cut-off events. [2024-11-09 15:07:41,985 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2024-11-09 15:07:41,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8738 conditions, 4834 events. 2387/4834 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 31500 event pairs, 1176 based on Foata normal form. 6/4045 useless extension candidates. Maximal degree in co-relation 8698. Up to 3783 conditions per place. [2024-11-09 15:07:42,020 INFO L140 encePairwiseOnDemand]: 94/100 looper letters, 66 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2024-11-09 15:07:42,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 101 transitions, 392 flow [2024-11-09 15:07:42,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:07:42,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:07:42,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-11-09 15:07:42,022 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5075 [2024-11-09 15:07:42,022 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 236 flow. Second operand 4 states and 203 transitions. [2024-11-09 15:07:42,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 101 transitions, 392 flow [2024-11-09 15:07:42,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 101 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:07:42,026 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 238 flow [2024-11-09 15:07:42,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2024-11-09 15:07:42,027 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2024-11-09 15:07:42,028 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 238 flow [2024-11-09 15:07:42,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:42,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:42,028 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:42,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:07:42,029 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-09 15:07:42,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:42,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1050623482, now seen corresponding path program 1 times [2024-11-09 15:07:42,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:42,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499105104] [2024-11-09 15:07:42,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:42,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:42,925 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:07:42,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:42,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499105104] [2024-11-09 15:07:42,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499105104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:42,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405420850] [2024-11-09 15:07:42,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:42,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:42,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:42,930 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:07:42,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:07:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:43,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 3882 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 15:07:43,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:07:43,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:07:43,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405420850] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:43,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:43,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-09 15:07:43,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060041859] [2024-11-09 15:07:43,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:43,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 15:07:43,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:43,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 15:07:43,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-09 15:07:43,713 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-11-09 15:07:43,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 238 flow. Second operand has 18 states, 18 states have (on average 36.22222222222222) internal successors, (652), 18 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:43,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:43,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-11-09 15:07:43,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:44,383 INFO L124 PetriNetUnfolderBase]: 2382/4826 cut-off events. [2024-11-09 15:07:44,383 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2024-11-09 15:07:44,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8758 conditions, 4826 events. 2382/4826 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 31385 event pairs, 2231 based on Foata normal form. 4/4040 useless extension candidates. Maximal degree in co-relation 8682. Up to 3784 conditions per place. [2024-11-09 15:07:44,416 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2024-11-09 15:07:44,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 98 transitions, 416 flow [2024-11-09 15:07:44,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 15:07:44,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 15:07:44,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 594 transitions. [2024-11-09 15:07:44,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.396 [2024-11-09 15:07:44,420 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 238 flow. Second operand 15 states and 594 transitions. [2024-11-09 15:07:44,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 98 transitions, 416 flow [2024-11-09 15:07:44,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 98 transitions, 410 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:07:44,423 INFO L231 Difference]: Finished difference. Result has 111 places, 98 transitions, 329 flow [2024-11-09 15:07:44,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=329, PETRI_PLACES=111, PETRI_TRANSITIONS=98} [2024-11-09 15:07:44,424 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 24 predicate places. [2024-11-09 15:07:44,424 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 329 flow [2024-11-09 15:07:44,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 36.22222222222222) internal successors, (652), 18 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:44,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:44,425 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:44,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:07:44,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:44,626 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-09 15:07:44,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:44,627 INFO L85 PathProgramCache]: Analyzing trace with hash -269122758, now seen corresponding path program 2 times [2024-11-09 15:07:44,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:44,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824996810] [2024-11-09 15:07:44,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:44,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:07:45,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:45,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824996810] [2024-11-09 15:07:45,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824996810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:45,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579474027] [2024-11-09 15:07:45,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:07:45,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:45,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:45,919 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:07:45,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:07:46,482 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 15:07:46,482 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:07:46,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 4102 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 15:07:46,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:07:46,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:07:46,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579474027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:46,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:46,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-11-09 15:07:46,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246423622] [2024-11-09 15:07:46,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:46,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 15:07:46,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:46,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 15:07:46,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 15:07:46,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-11-09 15:07:46,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 98 transitions, 329 flow. Second operand has 34 states, 34 states have (on average 36.11764705882353) internal successors, (1228), 34 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:46,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:46,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-11-09 15:07:46,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:47,984 INFO L124 PetriNetUnfolderBase]: 2382/4850 cut-off events. [2024-11-09 15:07:47,985 INFO L125 PetriNetUnfolderBase]: For 366/366 co-relation queries the response was YES. [2024-11-09 15:07:47,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8874 conditions, 4850 events. 2382/4850 cut-off events. For 366/366 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 31406 event pairs, 2231 based on Foata normal form. 8/4068 useless extension candidates. Maximal degree in co-relation 8678. Up to 3784 conditions per place. [2024-11-09 15:07:48,007 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 31 changer transitions 0/114 dead transitions. [2024-11-09 15:07:48,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 114 transitions, 635 flow [2024-11-09 15:07:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 15:07:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-09 15:07:48,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1174 transitions. [2024-11-09 15:07:48,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37870967741935485 [2024-11-09 15:07:48,019 INFO L175 Difference]: Start difference. First operand has 111 places, 98 transitions, 329 flow. Second operand 31 states and 1174 transitions. [2024-11-09 15:07:48,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 114 transitions, 635 flow [2024-11-09 15:07:48,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 114 transitions, 625 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 15:07:48,023 INFO L231 Difference]: Finished difference. Result has 145 places, 114 transitions, 560 flow [2024-11-09 15:07:48,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=560, PETRI_PLACES=145, PETRI_TRANSITIONS=114} [2024-11-09 15:07:48,025 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 58 predicate places. [2024-11-09 15:07:48,025 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 114 transitions, 560 flow [2024-11-09 15:07:48,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 36.11764705882353) internal successors, (1228), 34 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:48,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:48,027 INFO L204 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:48,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 15:07:48,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:48,227 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-09 15:07:48,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:48,228 INFO L85 PathProgramCache]: Analyzing trace with hash -503812678, now seen corresponding path program 3 times [2024-11-09 15:07:48,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:48,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998412523] [2024-11-09 15:07:48,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:48,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:07:50,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:50,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998412523] [2024-11-09 15:07:50,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998412523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:50,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076573064] [2024-11-09 15:07:50,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 15:07:50,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:50,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:50,442 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:07:50,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process