./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 8be7027f 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-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:40:30,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:40:30,219 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:40:30,223 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:40:30,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:40:30,253 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:40:30,253 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:40:30,254 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:40:30,256 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:40:30,257 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:40:30,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:40:30,257 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:40:30,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:40:30,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:40:30,258 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:40:30,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:40:30,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:40:30,259 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:40:30,259 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:40:30,260 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:40:30,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:40:30,265 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:40:30,265 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:40:30,265 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:40:30,265 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:40:30,266 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:40:30,266 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:40:30,266 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:40:30,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:40:30,266 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:40:30,267 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:40:30,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:40:30,267 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:40:30,267 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:40:30,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:40:30,268 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:40:30,268 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:40:30,268 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:40:30,269 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:40:30,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:40:30,269 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:40:30,269 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:40:30,270 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:40:30,270 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:40:30,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 [2024-11-12 20:40:30,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:40:30,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:40:30,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:40:30,551 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:40:30,551 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:40:30,552 INFO L431 ainManager$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 [2024-11-12 20:40:32,031 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:40:32,276 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:40:32,277 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2024-11-12 20:40:32,299 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36ad82f91/97bda31bd7bc4f4ca65a8a87866d52b9/FLAGb2bd3fb82 [2024-11-12 20:40:32,313 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36ad82f91/97bda31bd7bc4f4ca65a8a87866d52b9 [2024-11-12 20:40:32,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:40:32,318 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:40:32,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:40:32,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:40:32,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:40:32,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:40:32" (1/1) ... [2024-11-12 20:40:32,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0281c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:40:32, skipping insertion in model container [2024-11-12 20:40:32,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:40:32" (1/1) ... [2024-11-12 20:40:32,390 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:40:32,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:40:33,147 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:40:33,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:40:33,318 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:40:33,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:40:33 WrapperNode [2024-11-12 20:40:33,319 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:40:33,320 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:40:33,320 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:40:33,320 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:40:33,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:40:33" (1/1) ... [2024-11-12 20:40:33,366 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:40:33" (1/1) ... [2024-11-12 20:40:33,456 INFO L138 Inliner]: procedures = 280, calls = 1605, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1802 [2024-11-12 20:40:33,457 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:40:33,457 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:40:33,458 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:40:33,458 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:40:33,468 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:40:33" (1/1) ... [2024-11-12 20:40:33,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:40:33" (1/1) ... [2024-11-12 20:40:33,489 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:40:33" (1/1) ... [2024-11-12 20:40:33,552 INFO L175 MemorySlicer]: Split 1569 memory accesses to 8 slices as follows [2, 5, 259, 5, 1280, 14, 2, 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, 8, 1, 1]. [2024-11-12 20:40:33,555 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:40:33" (1/1) ... [2024-11-12 20:40:33,556 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:40:33" (1/1) ... [2024-11-12 20:40:33,645 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:40:33" (1/1) ... [2024-11-12 20:40:33,652 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:40:33" (1/1) ... [2024-11-12 20:40:33,660 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:40:33" (1/1) ... [2024-11-12 20:40:33,667 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:40:33" (1/1) ... [2024-11-12 20:40:33,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:40:33,685 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:40:33,685 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:40:33,686 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:40:33,687 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:40:33" (1/1) ... [2024-11-12 20:40:33,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:40:33,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:40:33,723 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) [2024-11-12 20:40:33,729 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 [2024-11-12 20:40:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 20:40:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-12 20:40:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-12 20:40:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-12 20:40:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-12 20:40:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-12 20:40:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-12 20:40:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-12 20:40:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-12 20:40:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-12 20:40:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-12 20:40:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 20:40:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-12 20:40:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-12 20:40:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-12 20:40:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-12 20:40:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-12 20:40:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-12 20:40:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-12 20:40:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-12 20:40:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 20:40:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:40:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:40:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 20:40:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-12 20:40:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-12 20:40:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-12 20:40:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-12 20:40:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-12 20:40:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-12 20:40:33,785 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-12 20:40:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:40:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 20:40:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 20:40:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-12 20:40:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-12 20:40:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-12 20:40:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-12 20:40:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-12 20:40:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 20:40:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 20:40:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:40:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-12 20:40:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-12 20:40:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-12 20:40:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-12 20:40:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-12 20:40:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-12 20:40:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-12 20:40:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-12 20:40:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:40:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:40:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 20:40:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-12 20:40:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-12 20:40:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-12 20:40:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-12 20:40:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-12 20:40:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:40:33,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:40:33,791 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:40:34,030 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:40:34,034 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:40:35,943 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:40:35,944 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:41:16,583 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:41:16,583 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-11-12 20:41:16,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:41:16 BoogieIcfgContainer [2024-11-12 20:41:16,584 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:41:16,586 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:41:16,586 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:41:16,590 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:41:16,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:40:32" (1/3) ... [2024-11-12 20:41:16,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24996af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:41:16, skipping insertion in model container [2024-11-12 20:41:16,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:40:33" (2/3) ... [2024-11-12 20:41:16,591 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24996af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:41:16, skipping insertion in model container [2024-11-12 20:41:16,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:41:16" (3/3) ... [2024-11-12 20:41:16,592 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2024-11-12 20:41:16,609 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:41:16,610 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-11-12 20:41:16,610 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:41:16,713 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-12 20:41:16,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 100 transitions, 220 flow [2024-11-12 20:41:16,904 INFO L124 PetriNetUnfolderBase]: 35/203 cut-off events. [2024-11-12 20:41:16,904 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-12 20:41:16,909 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. [2024-11-12 20:41:16,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 100 transitions, 220 flow [2024-11-12 20:41:16,915 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 100 transitions, 220 flow [2024-11-12 20:41:16,925 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:41:16,933 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;@3d82eb45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:41:16,933 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-12 20:41:17,012 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:41:17,013 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-12 20:41:17,013 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:41:17,014 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:17,015 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 20:41:17,015 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)] === [2024-11-12 20:41:17,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:17,022 INFO L85 PathProgramCache]: Analyzing trace with hash 3764163, now seen corresponding path program 1 times [2024-11-12 20:41:17,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:17,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971877247] [2024-11-12 20:41:17,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:17,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:18,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:18,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:18,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971877247] [2024-11-12 20:41:18,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971877247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:18,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:18,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:41:18,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371243972] [2024-11-12 20:41:18,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:18,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:18,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:18,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:18,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:18,542 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-11-12 20:41:18,545 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) [2024-11-12 20:41:18,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:18,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-11-12 20:41:18,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:19,353 INFO L124 PetriNetUnfolderBase]: 2462/5038 cut-off events. [2024-11-12 20:41:19,353 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2024-11-12 20:41:19,366 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. [2024-11-12 20:41:19,392 INFO L140 encePairwiseOnDemand]: 83/100 looper letters, 53 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2024-11-12 20:41:19,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 314 flow [2024-11-12 20:41:19,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:41:19,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:41:19,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-11-12 20:41:19,405 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-12 20:41:19,407 INFO L175 Difference]: Start difference. First operand has 87 places, 100 transitions, 220 flow. Second operand 4 states and 210 transitions. [2024-11-12 20:41:19,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 314 flow [2024-11-12 20:41:19,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:41:19,415 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 222 flow [2024-11-12 20:41:19,417 INFO L262 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} [2024-11-12 20:41:19,422 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2024-11-12 20:41:19,422 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 222 flow [2024-11-12 20:41:19,423 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) [2024-11-12 20:41:19,423 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:19,423 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-12 20:41:19,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:41:19,424 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)] === [2024-11-12 20:41:19,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:19,425 INFO L85 PathProgramCache]: Analyzing trace with hash 472790556, now seen corresponding path program 1 times [2024-11-12 20:41:19,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:19,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139668436] [2024-11-12 20:41:19,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:19,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:20,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:20,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139668436] [2024-11-12 20:41:20,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139668436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:20,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318019852] [2024-11-12 20:41:20,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:20,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:20,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:20,103 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) [2024-11-12 20:41:20,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:41:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:20,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 3762 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:41:20,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:20,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:20,883 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:41:20,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318019852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:20,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:41:20,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-12 20:41:20,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98737787] [2024-11-12 20:41:20,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:20,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:41:20,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:20,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:41:20,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:41:20,898 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-11-12 20:41:20,899 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) [2024-11-12 20:41:20,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:20,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-11-12 20:41:20,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:21,927 INFO L124 PetriNetUnfolderBase]: 2462/5037 cut-off events. [2024-11-12 20:41:21,927 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-11-12 20:41:21,939 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. [2024-11-12 20:41:21,962 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 49 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2024-11-12 20:41:21,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 90 transitions, 328 flow [2024-11-12 20:41:21,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:41:21,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:41:21,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 266 transitions. [2024-11-12 20:41:21,967 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44333333333333336 [2024-11-12 20:41:21,969 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 222 flow. Second operand 6 states and 266 transitions. [2024-11-12 20:41:21,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 90 transitions, 328 flow [2024-11-12 20:41:21,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 90 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:41:21,974 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 228 flow [2024-11-12 20:41:21,975 INFO L262 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} [2024-11-12 20:41:21,976 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 8 predicate places. [2024-11-12 20:41:21,976 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 228 flow [2024-11-12 20:41:21,976 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) [2024-11-12 20:41:21,977 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:21,977 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-12 20:41:22,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 20:41:22,181 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 [2024-11-12 20:41:22,182 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)] === [2024-11-12 20:41:22,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:22,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1771609136, now seen corresponding path program 1 times [2024-11-12 20:41:22,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:22,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883684791] [2024-11-12 20:41:22,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:22,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:22,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:22,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:22,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883684791] [2024-11-12 20:41:22,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883684791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:22,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:22,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:41:22,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64737974] [2024-11-12 20:41:22,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:22,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:41:22,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:22,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:41:22,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:41:22,610 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-11-12 20:41:22,611 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) [2024-11-12 20:41:22,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:22,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-11-12 20:41:22,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:23,465 INFO L124 PetriNetUnfolderBase]: 2462/5036 cut-off events. [2024-11-12 20:41:23,465 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-11-12 20:41:23,473 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. [2024-11-12 20:41:23,490 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 50 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2024-11-12 20:41:23,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 89 transitions, 332 flow [2024-11-12 20:41:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:41:23,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:41:23,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2024-11-12 20:41:23,492 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-11-12 20:41:23,492 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 228 flow. Second operand 3 states and 158 transitions. [2024-11-12 20:41:23,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 89 transitions, 332 flow [2024-11-12 20:41:23,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 89 transitions, 310 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-12 20:41:23,496 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 210 flow [2024-11-12 20:41:23,496 INFO L262 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} [2024-11-12 20:41:23,497 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2024-11-12 20:41:23,497 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 210 flow [2024-11-12 20:41:23,497 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) [2024-11-12 20:41:23,497 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:23,498 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:23,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:41:23,498 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)] === [2024-11-12 20:41:23,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:23,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1708754347, now seen corresponding path program 1 times [2024-11-12 20:41:23,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:23,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636445565] [2024-11-12 20:41:23,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:23,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:23,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:23,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:23,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636445565] [2024-11-12 20:41:23,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636445565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:23,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824087161] [2024-11-12 20:41:23,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:23,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:23,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:23,959 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) [2024-11-12 20:41:23,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:41:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:24,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 3751 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:41:24,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:24,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:24,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824087161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:24,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:24,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-12 20:41:24,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675415167] [2024-11-12 20:41:24,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:24,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:41:24,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:24,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:41:24,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:41:24,669 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-11-12 20:41:24,670 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) [2024-11-12 20:41:24,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:24,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-11-12 20:41:24,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:25,443 INFO L124 PetriNetUnfolderBase]: 2462/5040 cut-off events. [2024-11-12 20:41:25,444 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2024-11-12 20:41:25,454 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. [2024-11-12 20:41:25,677 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2024-11-12 20:41:25,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 92 transitions, 339 flow [2024-11-12 20:41:25,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:41:25,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:41:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2024-11-12 20:41:25,682 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4342857142857143 [2024-11-12 20:41:25,683 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 210 flow. Second operand 7 states and 304 transitions. [2024-11-12 20:41:25,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 92 transitions, 339 flow [2024-11-12 20:41:25,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 92 transitions, 325 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:41:25,690 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 236 flow [2024-11-12 20:41:25,690 INFO L262 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} [2024-11-12 20:41:25,691 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2024-11-12 20:41:25,691 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 236 flow [2024-11-12 20:41:25,691 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) [2024-11-12 20:41:25,691 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:25,691 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:25,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 20:41:25,892 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 [2024-11-12 20:41:25,892 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)] === [2024-11-12 20:41:25,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:25,895 INFO L85 PathProgramCache]: Analyzing trace with hash 37663499, now seen corresponding path program 2 times [2024-11-12 20:41:25,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:25,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105792327] [2024-11-12 20:41:25,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:25,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 20:41:26,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:26,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105792327] [2024-11-12 20:41:26,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105792327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:26,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:26,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:41:26,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390017764] [2024-11-12 20:41:26,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:26,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:26,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:26,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:26,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:26,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 100 [2024-11-12 20:41:26,314 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) [2024-11-12 20:41:26,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:26,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 100 [2024-11-12 20:41:26,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:26,936 INFO L124 PetriNetUnfolderBase]: 2387/4834 cut-off events. [2024-11-12 20:41:26,937 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2024-11-12 20:41:26,947 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. [2024-11-12 20:41:26,963 INFO L140 encePairwiseOnDemand]: 94/100 looper letters, 66 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2024-11-12 20:41:26,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 101 transitions, 392 flow [2024-11-12 20:41:26,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:41:26,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:41:26,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-11-12 20:41:26,965 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5075 [2024-11-12 20:41:26,965 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 236 flow. Second operand 4 states and 203 transitions. [2024-11-12 20:41:26,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 101 transitions, 392 flow [2024-11-12 20:41:26,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 101 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:41:26,971 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 238 flow [2024-11-12 20:41:26,973 INFO L262 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} [2024-11-12 20:41:26,973 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2024-11-12 20:41:26,974 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 238 flow [2024-11-12 20:41:26,974 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) [2024-11-12 20:41:26,974 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:26,974 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:26,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:41:26,974 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)] === [2024-11-12 20:41:26,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:26,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1050623482, now seen corresponding path program 1 times [2024-11-12 20:41:26,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:26,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471922290] [2024-11-12 20:41:26,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:26,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:27,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:27,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471922290] [2024-11-12 20:41:27,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471922290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:27,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550221889] [2024-11-12 20:41:27,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:27,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:27,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:27,825 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) [2024-11-12 20:41:27,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:41:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:28,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 3882 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 20:41:28,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:28,518 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:28,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550221889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:28,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:28,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-12 20:41:28,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435324877] [2024-11-12 20:41:28,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:28,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 20:41:28,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:28,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 20:41:28,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-12 20:41:28,625 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-11-12 20:41:28,626 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) [2024-11-12 20:41:28,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:28,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-11-12 20:41:28,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:29,381 INFO L124 PetriNetUnfolderBase]: 2382/4826 cut-off events. [2024-11-12 20:41:29,381 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2024-11-12 20:41:29,390 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. [2024-11-12 20:41:29,404 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2024-11-12 20:41:29,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 98 transitions, 416 flow [2024-11-12 20:41:29,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 20:41:29,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 20:41:29,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 594 transitions. [2024-11-12 20:41:29,407 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.396 [2024-11-12 20:41:29,407 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 238 flow. Second operand 15 states and 594 transitions. [2024-11-12 20:41:29,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 98 transitions, 416 flow [2024-11-12 20:41:29,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 98 transitions, 410 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:41:29,411 INFO L231 Difference]: Finished difference. Result has 111 places, 98 transitions, 329 flow [2024-11-12 20:41:29,411 INFO L262 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} [2024-11-12 20:41:29,414 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 24 predicate places. [2024-11-12 20:41:29,414 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 329 flow [2024-11-12 20:41:29,414 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) [2024-11-12 20:41:29,414 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:29,415 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:29,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 20:41:29,615 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 [2024-11-12 20:41:29,616 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)] === [2024-11-12 20:41:29,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:29,616 INFO L85 PathProgramCache]: Analyzing trace with hash -269122758, now seen corresponding path program 2 times [2024-11-12 20:41:29,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:29,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850974576] [2024-11-12 20:41:29,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:29,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:30,824 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:30,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:30,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850974576] [2024-11-12 20:41:30,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850974576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:30,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008345475] [2024-11-12 20:41:30,825 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:41:30,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:30,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:30,826 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) [2024-11-12 20:41:30,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 20:41:31,453 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:41:31,453 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:41:31,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 4102 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 20:41:31,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:31,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:31,788 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:31,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008345475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:31,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:31,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-11-12 20:41:31,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644990434] [2024-11-12 20:41:31,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:31,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-12 20:41:31,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:31,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-12 20:41:31,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-11-12 20:41:31,821 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-11-12 20:41:31,823 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) [2024-11-12 20:41:31,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:31,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-11-12 20:41:31,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:32,942 INFO L124 PetriNetUnfolderBase]: 2382/4850 cut-off events. [2024-11-12 20:41:32,943 INFO L125 PetriNetUnfolderBase]: For 366/366 co-relation queries the response was YES. [2024-11-12 20:41:32,951 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. [2024-11-12 20:41:32,961 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 31 changer transitions 0/114 dead transitions. [2024-11-12 20:41:32,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 114 transitions, 635 flow [2024-11-12 20:41:32,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-12 20:41:32,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-12 20:41:32,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1174 transitions. [2024-11-12 20:41:32,965 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37870967741935485 [2024-11-12 20:41:32,966 INFO L175 Difference]: Start difference. First operand has 111 places, 98 transitions, 329 flow. Second operand 31 states and 1174 transitions. [2024-11-12 20:41:32,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 114 transitions, 635 flow [2024-11-12 20:41:32,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 114 transitions, 625 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-12 20:41:32,969 INFO L231 Difference]: Finished difference. Result has 145 places, 114 transitions, 560 flow [2024-11-12 20:41:32,970 INFO L262 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} [2024-11-12 20:41:32,970 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 58 predicate places. [2024-11-12 20:41:32,970 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 114 transitions, 560 flow [2024-11-12 20:41:32,971 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) [2024-11-12 20:41:32,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:32,972 INFO L206 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:32,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 20:41:33,172 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 [2024-11-12 20:41:33,172 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)] === [2024-11-12 20:41:33,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:33,173 INFO L85 PathProgramCache]: Analyzing trace with hash -503812678, now seen corresponding path program 3 times [2024-11-12 20:41:33,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:33,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628228434] [2024-11-12 20:41:33,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:33,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:35,275 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:35,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:35,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628228434] [2024-11-12 20:41:35,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628228434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:35,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407847078] [2024-11-12 20:41:35,276 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 20:41:35,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:35,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:35,278 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) [2024-11-12 20:41:35,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process