./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 023d838f 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-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:20:18,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:20:18,269 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:20:18,274 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:20:18,275 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:20:18,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:20:18,310 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:20:18,311 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:20:18,311 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:20:18,313 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:20:18,313 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:20:18,313 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:20:18,314 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:20:18,314 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:20:18,315 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:20:18,315 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:20:18,315 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:20:18,316 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:20:18,316 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:20:18,316 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:20:18,317 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:20:18,321 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:20:18,321 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:20:18,321 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:20:18,322 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:20:18,322 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:20:18,322 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:20:18,322 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:20:18,322 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:20:18,323 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:20:18,323 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:20:18,323 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:20:18,323 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:20:18,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:20:18,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:20:18,326 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:20:18,327 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:20:18,328 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:20:18,328 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:20:18,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:20:18,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:20:18,329 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:20:18,330 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:20:18,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:20:18,330 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 [2024-11-10 22:20:18,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:20:18,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:20:18,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:20:18,616 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:20:18,616 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:20:18,618 INFO L431 ainManager$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 [2024-11-10 22:20:20,158 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:20:20,430 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:20:20,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2024-11-10 22:20:20,448 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f30cdc9/1567a61c641444228903d61c7f94c345/FLAG23ad90fec [2024-11-10 22:20:20,737 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f30cdc9/1567a61c641444228903d61c7f94c345 [2024-11-10 22:20:20,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:20:20,741 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:20:20,744 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:20:20,744 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:20:20,749 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:20:20,750 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:20:20" (1/1) ... [2024-11-10 22:20:20,751 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb7433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:20, skipping insertion in model container [2024-11-10 22:20:20,751 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:20:20" (1/1) ... [2024-11-10 22:20:20,798 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:20:21,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:20:21,667 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:20:21,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:20:21,864 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:20:21,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:21 WrapperNode [2024-11-10 22:20:21,865 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:20:21,866 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:20:21,866 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:20:21,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:20:21,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:21" (1/1) ... [2024-11-10 22:20:21,917 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:21" (1/1) ... [2024-11-10 22:20:22,004 INFO L138 Inliner]: procedures = 280, calls = 1605, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1791 [2024-11-10 22:20:22,004 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:20:22,005 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:20:22,005 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:20:22,005 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:20:22,016 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:21" (1/1) ... [2024-11-10 22:20:22,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:21" (1/1) ... [2024-11-10 22:20:22,037 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:21" (1/1) ... [2024-11-10 22:20:22,102 INFO L175 MemorySlicer]: Split 1569 memory accesses to 8 slices as follows [2, 5, 259, 5, 1280, 2, 2, 14]. 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, 1, 8]. [2024-11-10 22:20:22,102 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:21" (1/1) ... [2024-11-10 22:20:22,102 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:21" (1/1) ... [2024-11-10 22:20:22,240 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:21" (1/1) ... [2024-11-10 22:20:22,245 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:21" (1/1) ... [2024-11-10 22:20:22,255 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:21" (1/1) ... [2024-11-10 22:20:22,265 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:21" (1/1) ... [2024-11-10 22:20:22,286 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:20:22,288 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:20:22,288 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:20:22,289 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:20:22,290 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:21" (1/1) ... [2024-11-10 22:20:22,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:20:22,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:20:22,333 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) [2024-11-10 22:20:22,343 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 [2024-11-10 22:20:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 22:20:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 22:20:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 22:20:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-10 22:20:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-10 22:20:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-10 22:20:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-10 22:20:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-10 22:20:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-10 22:20:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-10 22:20:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-10 22:20:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 22:20:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-10 22:20:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-10 22:20:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-10 22:20:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-10 22:20:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-10 22:20:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-10 22:20:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-10 22:20:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-10 22:20:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 22:20:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:20:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:20:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 22:20:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 22:20:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-10 22:20:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-10 22:20:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-10 22:20:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-10 22:20:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-10 22:20:22,391 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-10 22:20:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:20:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:20:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 22:20:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 22:20:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-10 22:20:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-10 22:20:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-10 22:20:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-10 22:20:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 22:20:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:20:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:20:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 22:20:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 22:20:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-10 22:20:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-10 22:20:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-10 22:20:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-10 22:20:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-10 22:20:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-10 22:20:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:20:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:20:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 22:20:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 22:20:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-10 22:20:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-10 22:20:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-10 22:20:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-10 22:20:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:20:22,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:20:22,398 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:20:22,617 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:20:22,620 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:20:24,491 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1051: havoc main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset; [2024-11-10 22:20:24,492 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1051-1: SUMMARY for call ULTIMATE.dealloc(main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset); srcloc: null [2024-11-10 22:20:24,492 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1052: havoc main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset; [2024-11-10 22:20:24,492 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1052-1: SUMMARY for call ULTIMATE.dealloc(main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset); srcloc: null [2024-11-10 22:20:24,494 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:20:24,494 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:21:07,128 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:21:07,129 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:21:07,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:21:07 BoogieIcfgContainer [2024-11-10 22:21:07,130 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:21:07,133 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:21:07,134 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:21:07,137 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:21:07,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:20:20" (1/3) ... [2024-11-10 22:21:07,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400fc8e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:21:07, skipping insertion in model container [2024-11-10 22:21:07,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:21" (2/3) ... [2024-11-10 22:21:07,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400fc8e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:21:07, skipping insertion in model container [2024-11-10 22:21:07,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:21:07" (3/3) ... [2024-11-10 22:21:07,140 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2024-11-10 22:21:07,158 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:21:07,158 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-11-10 22:21:07,159 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:21:07,295 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 22:21:07,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 118 transitions, 256 flow [2024-11-10 22:21:07,553 INFO L124 PetriNetUnfolderBase]: 50/254 cut-off events. [2024-11-10 22:21:07,554 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-10 22:21:07,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 254 events. 50/254 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1029 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 123. Up to 8 conditions per place. [2024-11-10 22:21:07,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 118 transitions, 256 flow [2024-11-10 22:21:07,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 118 transitions, 256 flow [2024-11-10 22:21:07,582 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:21:07,590 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;@2dbc6fbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:21:07,591 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-10 22:21:07,709 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:21:07,709 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:21:07,710 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:21:07,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:07,711 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:21:07,712 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:21:07,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:07,718 INFO L85 PathProgramCache]: Analyzing trace with hash 114627332, now seen corresponding path program 1 times [2024-11-10 22:21:07,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:07,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756507518] [2024-11-10 22:21:07,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:07,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:21:08,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:08,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756507518] [2024-11-10 22:21:08,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756507518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:21:08,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:21:08,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:21:08,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991453435] [2024-11-10 22:21:08,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:21:08,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:21:08,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:08,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:21:08,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:21:08,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 118 [2024-11-10 22:21:08,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 118 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 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) [2024-11-10 22:21:08,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:08,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 118 [2024-11-10 22:21:08,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:10,018 INFO L124 PetriNetUnfolderBase]: 2462/5291 cut-off events. [2024-11-10 22:21:10,019 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2024-11-10 22:21:10,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9322 conditions, 5291 events. 2462/5291 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 41889 event pairs, 2279 based on Foata normal form. 1078/6027 useless extension candidates. Maximal degree in co-relation 7817. Up to 3944 conditions per place. [2024-11-10 22:21:10,336 INFO L140 encePairwiseOnDemand]: 96/118 looper letters, 54 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2024-11-10 22:21:10,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 104 transitions, 342 flow [2024-11-10 22:21:10,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:21:10,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:21:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 265 transitions. [2024-11-10 22:21:10,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5614406779661016 [2024-11-10 22:21:10,377 INFO L175 Difference]: Start difference. First operand has 100 places, 118 transitions, 256 flow. Second operand 4 states and 265 transitions. [2024-11-10 22:21:10,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 104 transitions, 342 flow [2024-11-10 22:21:10,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 104 transitions, 342 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:21:10,390 INFO L231 Difference]: Finished difference. Result has 105 places, 104 transitions, 248 flow [2024-11-10 22:21:10,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=105, PETRI_TRANSITIONS=104} [2024-11-10 22:21:10,396 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 5 predicate places. [2024-11-10 22:21:10,397 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 104 transitions, 248 flow [2024-11-10 22:21:10,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 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) [2024-11-10 22:21:10,397 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:10,398 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:21:10,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:21:10,398 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:21:10,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:10,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1493749276, now seen corresponding path program 1 times [2024-11-10 22:21:10,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:10,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909762166] [2024-11-10 22:21:10,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:10,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:21:11,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:11,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909762166] [2024-11-10 22:21:11,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909762166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:21:11,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519113800] [2024-11-10 22:21:11,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:11,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:11,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:11,220 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) [2024-11-10 22:21:11,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:21:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:12,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 3764 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:21:12,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:21:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:21:12,066 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:21:12,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519113800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:21:12,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:21:12,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:21:12,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224155837] [2024-11-10 22:21:12,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:21:12,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:21:12,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:12,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:21:12,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:21:12,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 118 [2024-11-10 22:21:12,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 104 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 47.833333333333336) internal successors, (287), 6 states have internal predecessors, (287), 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) [2024-11-10 22:21:12,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:12,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 118 [2024-11-10 22:21:12,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:12,955 INFO L124 PetriNetUnfolderBase]: 2462/5290 cut-off events. [2024-11-10 22:21:12,955 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2024-11-10 22:21:13,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9332 conditions, 5290 events. 2462/5290 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 41891 event pairs, 2279 based on Foata normal form. 1/4949 useless extension candidates. Maximal degree in co-relation 9312. Up to 3938 conditions per place. [2024-11-10 22:21:13,213 INFO L140 encePairwiseOnDemand]: 113/118 looper letters, 50 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2024-11-10 22:21:13,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 356 flow [2024-11-10 22:21:13,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:21:13,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:21:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 339 transitions. [2024-11-10 22:21:13,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4788135593220339 [2024-11-10 22:21:13,219 INFO L175 Difference]: Start difference. First operand has 105 places, 104 transitions, 248 flow. Second operand 6 states and 339 transitions. [2024-11-10 22:21:13,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 356 flow [2024-11-10 22:21:13,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 103 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:21:13,224 INFO L231 Difference]: Finished difference. Result has 108 places, 103 transitions, 254 flow [2024-11-10 22:21:13,224 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=108, PETRI_TRANSITIONS=103} [2024-11-10 22:21:13,225 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 8 predicate places. [2024-11-10 22:21:13,225 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 103 transitions, 254 flow [2024-11-10 22:21:13,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.833333333333336) internal successors, (287), 6 states have internal predecessors, (287), 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) [2024-11-10 22:21:13,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:13,226 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:21:13,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:21:13,426 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 [2024-11-10 22:21:13,428 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:21:13,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:13,430 INFO L85 PathProgramCache]: Analyzing trace with hash 938416333, now seen corresponding path program 1 times [2024-11-10 22:21:13,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:13,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237776187] [2024-11-10 22:21:13,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:13,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:13,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:21:13,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:13,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237776187] [2024-11-10 22:21:13,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237776187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:21:13,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:21:13,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:21:13,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605555624] [2024-11-10 22:21:13,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:21:13,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:21:13,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:13,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:21:13,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:21:13,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 118 [2024-11-10 22:21:13,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 103 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:13,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:13,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 118 [2024-11-10 22:21:13,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:14,578 INFO L124 PetriNetUnfolderBase]: 2462/5289 cut-off events. [2024-11-10 22:21:14,578 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-11-10 22:21:14,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9333 conditions, 5289 events. 2462/5289 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 41832 event pairs, 2279 based on Foata normal form. 1/4950 useless extension candidates. Maximal degree in co-relation 9307. Up to 3941 conditions per place. [2024-11-10 22:21:14,624 INFO L140 encePairwiseOnDemand]: 115/118 looper letters, 50 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2024-11-10 22:21:14,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 102 transitions, 358 flow [2024-11-10 22:21:14,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:21:14,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:21:14,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2024-11-10 22:21:14,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.556497175141243 [2024-11-10 22:21:14,629 INFO L175 Difference]: Start difference. First operand has 108 places, 103 transitions, 254 flow. Second operand 3 states and 197 transitions. [2024-11-10 22:21:14,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 102 transitions, 358 flow [2024-11-10 22:21:14,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 102 transitions, 348 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-10 22:21:14,634 INFO L231 Difference]: Finished difference. Result has 105 places, 102 transitions, 248 flow [2024-11-10 22:21:14,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=105, PETRI_TRANSITIONS=102} [2024-11-10 22:21:14,637 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 5 predicate places. [2024-11-10 22:21:14,638 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 248 flow [2024-11-10 22:21:14,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:21:14,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:14,638 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:14,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:21:14,638 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:21:14,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:14,639 INFO L85 PathProgramCache]: Analyzing trace with hash 878194793, now seen corresponding path program 1 times [2024-11-10 22:21:14,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:14,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464248240] [2024-11-10 22:21:14,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:14,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:21:15,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:15,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464248240] [2024-11-10 22:21:15,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464248240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:21:15,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701847507] [2024-11-10 22:21:15,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:15,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:15,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:15,162 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) [2024-11-10 22:21:15,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:21:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:15,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 3754 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:21:15,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:21:15,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:21:15,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:21:15,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:21:15,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701847507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:21:15,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:21:15,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-10 22:21:15,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048095420] [2024-11-10 22:21:15,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:21:15,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 22:21:15,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:15,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 22:21:15,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:21:15,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 118 [2024-11-10 22:21:15,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 248 flow. Second operand has 10 states, 10 states have (on average 48.4) internal successors, (484), 10 states have internal predecessors, (484), 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) [2024-11-10 22:21:15,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:15,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 118 [2024-11-10 22:21:15,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:16,739 INFO L124 PetriNetUnfolderBase]: 2462/5295 cut-off events. [2024-11-10 22:21:16,739 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-11-10 22:21:16,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9349 conditions, 5295 events. 2462/5295 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 41835 event pairs, 2279 based on Foata normal form. 2/4957 useless extension candidates. Maximal degree in co-relation 9302. Up to 3940 conditions per place. [2024-11-10 22:21:16,779 INFO L140 encePairwiseOnDemand]: 114/118 looper letters, 51 selfloop transitions, 7 changer transitions 0/105 dead transitions. [2024-11-10 22:21:16,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 105 transitions, 386 flow [2024-11-10 22:21:16,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:21:16,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:21:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 389 transitions. [2024-11-10 22:21:16,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47094430992736075 [2024-11-10 22:21:16,782 INFO L175 Difference]: Start difference. First operand has 105 places, 102 transitions, 248 flow. Second operand 7 states and 389 transitions. [2024-11-10 22:21:16,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 105 transitions, 386 flow [2024-11-10 22:21:16,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 105 transitions, 372 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:21:16,786 INFO L231 Difference]: Finished difference. Result has 111 places, 105 transitions, 281 flow [2024-11-10 22:21:16,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=281, PETRI_PLACES=111, PETRI_TRANSITIONS=105} [2024-11-10 22:21:16,787 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2024-11-10 22:21:16,787 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 105 transitions, 281 flow [2024-11-10 22:21:16,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 48.4) internal successors, (484), 10 states have internal predecessors, (484), 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) [2024-11-10 22:21:16,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:16,788 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:16,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:21:16,988 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 [2024-11-10 22:21:16,989 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:21:16,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:16,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1127621975, now seen corresponding path program 2 times [2024-11-10 22:21:16,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:16,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166033721] [2024-11-10 22:21:16,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:16,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:21:17,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:17,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166033721] [2024-11-10 22:21:17,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166033721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:21:17,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:21:17,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:21:17,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195126019] [2024-11-10 22:21:17,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:21:17,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:21:17,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:17,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:21:17,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:21:17,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 118 [2024-11-10 22:21:17,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 105 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2024-11-10 22:21:17,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:17,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 118 [2024-11-10 22:21:17,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:18,211 INFO L124 PetriNetUnfolderBase]: 2392/5149 cut-off events. [2024-11-10 22:21:18,212 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2024-11-10 22:21:18,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9074 conditions, 5149 events. 2392/5149 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 39667 event pairs, 1176 based on Foata normal form. 6/4844 useless extension candidates. Maximal degree in co-relation 9022. Up to 3794 conditions per place. [2024-11-10 22:21:18,247 INFO L140 encePairwiseOnDemand]: 112/118 looper letters, 67 selfloop transitions, 3 changer transitions 0/114 dead transitions. [2024-11-10 22:21:18,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 114 transitions, 439 flow [2024-11-10 22:21:18,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:21:18,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:21:18,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2024-11-10 22:21:18,250 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5338983050847458 [2024-11-10 22:21:18,250 INFO L175 Difference]: Start difference. First operand has 111 places, 105 transitions, 281 flow. Second operand 4 states and 252 transitions. [2024-11-10 22:21:18,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 114 transitions, 439 flow [2024-11-10 22:21:18,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 114 transitions, 431 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-10 22:21:18,256 INFO L231 Difference]: Finished difference. Result has 111 places, 103 transitions, 279 flow [2024-11-10 22:21:18,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=111, PETRI_TRANSITIONS=103} [2024-11-10 22:21:18,257 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2024-11-10 22:21:18,257 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 103 transitions, 279 flow [2024-11-10 22:21:18,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2024-11-10 22:21:18,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:18,257 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:18,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:21:18,258 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:21:18,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:18,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1079456756, now seen corresponding path program 1 times [2024-11-10 22:21:18,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:18,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224778350] [2024-11-10 22:21:18,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:18,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:18,941 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:21:18,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:18,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224778350] [2024-11-10 22:21:18,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224778350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:21:18,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074026573] [2024-11-10 22:21:18,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:18,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:18,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:18,949 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) [2024-11-10 22:21:18,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:21:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:19,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 3888 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 22:21:19,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:21:19,670 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:21:19,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:21:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:21:19,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074026573] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:21:19,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:21:19,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-10 22:21:19,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150562551] [2024-11-10 22:21:19,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:21:19,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 22:21:19,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:19,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 22:21:19,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-10 22:21:19,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 118 [2024-11-10 22:21:19,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 103 transitions, 279 flow. Second operand has 18 states, 18 states have (on average 48.27777777777778) internal successors, (869), 18 states have internal predecessors, (869), 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) [2024-11-10 22:21:19,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:19,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 118 [2024-11-10 22:21:19,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:20,714 INFO L124 PetriNetUnfolderBase]: 2382/5100 cut-off events. [2024-11-10 22:21:20,714 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2024-11-10 22:21:20,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9044 conditions, 5100 events. 2382/5100 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 39346 event pairs, 2231 based on Foata normal form. 4/4787 useless extension candidates. Maximal degree in co-relation 8946. Up to 3785 conditions per place. [2024-11-10 22:21:20,752 INFO L140 encePairwiseOnDemand]: 114/118 looper letters, 51 selfloop transitions, 15 changer transitions 0/111 dead transitions. [2024-11-10 22:21:20,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 111 transitions, 475 flow [2024-11-10 22:21:20,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 22:21:20,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 22:21:20,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 775 transitions. [2024-11-10 22:21:20,755 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4378531073446328 [2024-11-10 22:21:20,755 INFO L175 Difference]: Start difference. First operand has 111 places, 103 transitions, 279 flow. Second operand 15 states and 775 transitions. [2024-11-10 22:21:20,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 111 transitions, 475 flow [2024-11-10 22:21:20,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 111 transitions, 469 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:21:20,759 INFO L231 Difference]: Finished difference. Result has 126 places, 111 transitions, 386 flow [2024-11-10 22:21:20,759 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=386, PETRI_PLACES=126, PETRI_TRANSITIONS=111} [2024-11-10 22:21:20,763 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 26 predicate places. [2024-11-10 22:21:20,764 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 111 transitions, 386 flow [2024-11-10 22:21:20,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 48.27777777777778) internal successors, (869), 18 states have internal predecessors, (869), 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) [2024-11-10 22:21:20,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:20,765 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:20,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:21:20,965 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 [2024-11-10 22:21:20,966 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:21:20,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:20,966 INFO L85 PathProgramCache]: Analyzing trace with hash -376338316, now seen corresponding path program 2 times [2024-11-10 22:21:20,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:20,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263382458] [2024-11-10 22:21:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:20,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:21:22,200 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:21:22,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:21:22,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263382458] [2024-11-10 22:21:22,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263382458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:21:22,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587732905] [2024-11-10 22:21:22,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:21:22,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:21:22,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:21:22,204 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) [2024-11-10 22:21:22,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:21:22,968 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:21:22,968 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:21:22,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 4112 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 22:21:22,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:21:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:21:23,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:21:23,362 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:21:23,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587732905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:21:23,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:21:23,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-11-10 22:21:23,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908901381] [2024-11-10 22:21:23,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:21:23,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-10 22:21:23,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:21:23,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-10 22:21:23,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-11-10 22:21:23,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 118 [2024-11-10 22:21:23,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 111 transitions, 386 flow. Second operand has 34 states, 34 states have (on average 48.14705882352941) internal successors, (1637), 34 states have internal predecessors, (1637), 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) [2024-11-10 22:21:23,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:21:23,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 118 [2024-11-10 22:21:23,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:21:24,579 INFO L124 PetriNetUnfolderBase]: 2382/5132 cut-off events. [2024-11-10 22:21:24,580 INFO L125 PetriNetUnfolderBase]: For 794/794 co-relation queries the response was YES. [2024-11-10 22:21:24,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9184 conditions, 5132 events. 2382/5132 cut-off events. For 794/794 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 39389 event pairs, 2231 based on Foata normal form. 8/4824 useless extension candidates. Maximal degree in co-relation 8942. Up to 3785 conditions per place. [2024-11-10 22:21:24,617 INFO L140 encePairwiseOnDemand]: 114/118 looper letters, 51 selfloop transitions, 31 changer transitions 0/127 dead transitions. [2024-11-10 22:21:24,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 127 transitions, 726 flow [2024-11-10 22:21:24,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-10 22:21:24,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-10 22:21:24,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1547 transitions. [2024-11-10 22:21:24,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4229086932750137 [2024-11-10 22:21:24,622 INFO L175 Difference]: Start difference. First operand has 126 places, 111 transitions, 386 flow. Second operand 31 states and 1547 transitions. [2024-11-10 22:21:24,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 127 transitions, 726 flow [2024-11-10 22:21:24,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 127 transitions, 708 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-10 22:21:24,627 INFO L231 Difference]: Finished difference. Result has 160 places, 127 transitions, 641 flow [2024-11-10 22:21:24,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=641, PETRI_PLACES=160, PETRI_TRANSITIONS=127} [2024-11-10 22:21:24,628 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 60 predicate places. [2024-11-10 22:21:24,628 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 127 transitions, 641 flow [2024-11-10 22:21:24,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 48.14705882352941) internal successors, (1637), 34 states have internal predecessors, (1637), 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) [2024-11-10 22:21:24,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:21:24,629 INFO L204 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 15, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:21:24,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 22:21:24,830 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 [2024-11-10 22:21:24,830 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:21:24,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:21:24,831 INFO L85 PathProgramCache]: Analyzing trace with hash -413453964, now seen corresponding path program 3 times [2024-11-10 22:21:24,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:21:24,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206175477] [2024-11-10 22:21:24,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:21:24,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:21:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat