./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_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.dk.eval-mul-div-a046e57-m [2024-10-13 16:44:09,555 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:44:09,634 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:44:09,639 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:44:09,639 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:44:09,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:44:09,659 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:44:09,659 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:44:09,660 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:44:09,660 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:44:09,661 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:44:09,661 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:44:09,661 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:44:09,662 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:44:09,662 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:44:09,662 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:44:09,663 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:44:09,663 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:44:09,666 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:44:09,667 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:44:09,667 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:44:09,667 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:44:09,668 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:44:09,668 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:44:09,668 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:44:09,668 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:44:09,669 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:44:09,669 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:44:09,669 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:44:09,669 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:44:09,670 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:44:09,670 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:44:09,670 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:44:09,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:44:09,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:44:09,671 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:44:09,671 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:44:09,672 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:44:09,672 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:44:09,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:44:09,672 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:44:09,673 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:44:09,673 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:44:09,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:44:09,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 [2024-10-13 16:44:09,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:44:09,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:44:09,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:44:09,954 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:44:09,955 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:44:09,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2024-10-13 16:44:11,466 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:44:11,743 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:44:11,745 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2024-10-13 16:44:11,764 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1c87637f/41404711ac974f2ba9f591d29771ccd8/FLAGe5f8f1dd7 [2024-10-13 16:44:12,059 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1c87637f/41404711ac974f2ba9f591d29771ccd8 [2024-10-13 16:44:12,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:44:12,063 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:44:12,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:44:12,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:44:12,068 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:44:12,069 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:44:12" (1/1) ... [2024-10-13 16:44:12,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@762eadf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:12, skipping insertion in model container [2024-10-13 16:44:12,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:44:12" (1/1) ... [2024-10-13 16:44:12,128 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:44:12,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:44:12,742 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:44:12,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:44:12,882 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:44:12,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:12 WrapperNode [2024-10-13 16:44:12,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:44:12,884 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:44:12,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:44:12,884 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:44:12,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:12" (1/1) ... [2024-10-13 16:44:12,912 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:12" (1/1) ... [2024-10-13 16:44:12,948 INFO L138 Inliner]: procedures = 279, calls = 69, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 268 [2024-10-13 16:44:12,949 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:44:12,951 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:44:12,951 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:44:12,951 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:44:12,960 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:12" (1/1) ... [2024-10-13 16:44:12,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:12" (1/1) ... [2024-10-13 16:44:12,965 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:12" (1/1) ... [2024-10-13 16:44:12,987 INFO L175 MemorySlicer]: Split 35 memory accesses to 8 slices as follows [2, 5, 4, 5, 1, 14, 2, 2]. 40 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 0, 5, 0, 0, 0, 0]. The 13 writes are split as follows [0, 0, 2, 0, 1, 8, 1, 1]. [2024-10-13 16:44:12,988 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:12" (1/1) ... [2024-10-13 16:44:12,988 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:12" (1/1) ... [2024-10-13 16:44:13,000 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:12" (1/1) ... [2024-10-13 16:44:13,005 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:12" (1/1) ... [2024-10-13 16:44:13,010 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:12" (1/1) ... [2024-10-13 16:44:13,012 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:12" (1/1) ... [2024-10-13 16:44:13,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:44:13,020 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:44:13,020 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:44:13,020 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:44:13,021 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:12" (1/1) ... [2024-10-13 16:44:13,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:44:13,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:44:13,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:44:13,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:44:13,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 16:44:13,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-13 16:44:13,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-13 16:44:13,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-13 16:44:13,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-13 16:44:13,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-10-13 16:44:13,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-10-13 16:44:13,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-10-13 16:44:13,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-10-13 16:44:13,119 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-10-13 16:44:13,119 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-10-13 16:44:13,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 16:44:13,119 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 16:44:13,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:44:13,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:44:13,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 16:44:13,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 16:44:13,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-13 16:44:13,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-13 16:44:13,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-13 16:44:13,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-13 16:44:13,120 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-10-13 16:44:13,120 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-10-13 16:44:13,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:44:13,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:44:13,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 16:44:13,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 16:44:13,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-13 16:44:13,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-13 16:44:13,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-13 16:44:13,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-13 16:44:13,120 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 16:44:13,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:44:13,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:44:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-13 16:44:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-13 16:44:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-13 16:44:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-13 16:44:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-10-13 16:44:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-10-13 16:44:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-10-13 16:44:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-10-13 16:44:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:44:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:44:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 16:44:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 16:44:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-13 16:44:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-13 16:44:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-13 16:44:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-13 16:44:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:44:13,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:44:13,126 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:44:13,359 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:44:13,363 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:44:13,805 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:44:13,805 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:44:14,139 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:44:14,139 INFO L314 CfgBuilder]: Removed 16 assume(true) statements. [2024-10-13 16:44:14,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:44:14 BoogieIcfgContainer [2024-10-13 16:44:14,140 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:44:14,142 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:44:14,142 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:44:14,146 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:44:14,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:44:12" (1/3) ... [2024-10-13 16:44:14,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449d5c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:44:14, skipping insertion in model container [2024-10-13 16:44:14,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:44:12" (2/3) ... [2024-10-13 16:44:14,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449d5c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:44:14, skipping insertion in model container [2024-10-13 16:44:14,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:44:14" (3/3) ... [2024-10-13 16:44:14,149 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2024-10-13 16:44:14,167 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:44:14,168 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-10-13 16:44:14,168 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:44:14,248 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-13 16:44:14,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 100 transitions, 220 flow [2024-10-13 16:44:14,355 INFO L124 PetriNetUnfolderBase]: 35/203 cut-off events. [2024-10-13 16:44:14,356 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-13 16:44:14,362 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 13. Compared 844 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. [2024-10-13 16:44:14,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 100 transitions, 220 flow [2024-10-13 16:44:14,369 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 100 transitions, 220 flow [2024-10-13 16:44:14,381 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:44:14,389 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;@3cd22d4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:44:14,390 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-13 16:44:14,394 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:44:14,395 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:44:14,395 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:44:14,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:14,396 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:44:14,397 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)] === [2024-10-13 16:44:14,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:14,403 INFO L85 PathProgramCache]: Analyzing trace with hash 717639, now seen corresponding path program 1 times [2024-10-13 16:44:14,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:14,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236877177] [2024-10-13 16:44:14,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:14,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:44:14,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:14,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236877177] [2024-10-13 16:44:14,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236877177] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:14,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:44:14,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:44:14,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551924567] [2024-10-13 16:44:14,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:14,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:44:14,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:14,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:44:14,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:44:14,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-10-13 16:44:14,856 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) [2024-10-13 16:44:14,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:14,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-10-13 16:44:14,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:15,834 INFO L124 PetriNetUnfolderBase]: 2462/5038 cut-off events. [2024-10-13 16:44:15,835 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2024-10-13 16:44:15,851 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 33654 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. [2024-10-13 16:44:15,881 INFO L140 encePairwiseOnDemand]: 83/100 looper letters, 53 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2024-10-13 16:44:15,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 314 flow [2024-10-13 16:44:15,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:44:15,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:44:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-10-13 16:44:15,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-10-13 16:44:15,897 INFO L175 Difference]: Start difference. First operand has 87 places, 100 transitions, 220 flow. Second operand 4 states and 210 transitions. [2024-10-13 16:44:15,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 314 flow [2024-10-13 16:44:15,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:44:15,908 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 222 flow [2024-10-13 16:44:15,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2024-10-13 16:44:15,915 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2024-10-13 16:44:15,916 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 222 flow [2024-10-13 16:44:15,916 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) [2024-10-13 16:44:15,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:15,917 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 16:44:15,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:44:15,917 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)] === [2024-10-13 16:44:15,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:15,918 INFO L85 PathProgramCache]: Analyzing trace with hash -94939236, now seen corresponding path program 1 times [2024-10-13 16:44:15,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:15,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495900786] [2024-10-13 16:44:15,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:15,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:44:16,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:16,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495900786] [2024-10-13 16:44:16,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495900786] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:44:16,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419046474] [2024-10-13 16:44:16,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:16,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:16,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:44:16,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:44:16,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:44:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:16,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:44:16,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:44:16,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:44:16,411 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:44:16,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419046474] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:16,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:44:16,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:44:16,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260437468] [2024-10-13 16:44:16,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:16,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:44:16,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:16,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:44:16,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:44:16,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-10-13 16:44:16,426 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) [2024-10-13 16:44:16,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:16,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-10-13 16:44:16,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:17,234 INFO L124 PetriNetUnfolderBase]: 2462/5037 cut-off events. [2024-10-13 16:44:17,235 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-10-13 16:44:17,247 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 33640 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. [2024-10-13 16:44:17,270 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 49 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2024-10-13 16:44:17,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 90 transitions, 328 flow [2024-10-13 16:44:17,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:44:17,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:44:17,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 266 transitions. [2024-10-13 16:44:17,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44333333333333336 [2024-10-13 16:44:17,275 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 222 flow. Second operand 6 states and 266 transitions. [2024-10-13 16:44:17,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 90 transitions, 328 flow [2024-10-13 16:44:17,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 90 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:44:17,281 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 228 flow [2024-10-13 16:44:17,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2024-10-13 16:44:17,283 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 8 predicate places. [2024-10-13 16:44:17,283 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 228 flow [2024-10-13 16:44:17,284 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) [2024-10-13 16:44:17,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:17,285 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:44:17,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:44:17,488 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 [2024-10-13 16:44:17,489 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)] === [2024-10-13 16:44:17,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:17,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1351851700, now seen corresponding path program 1 times [2024-10-13 16:44:17,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:17,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895249648] [2024-10-13 16:44:17,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:17,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:17,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:44:17,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:17,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895249648] [2024-10-13 16:44:17,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895249648] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:17,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:44:17,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:44:17,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415545638] [2024-10-13 16:44:17,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:17,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:44:17,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:17,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:44:17,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:44:17,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-10-13 16:44:17,584 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) [2024-10-13 16:44:17,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:17,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-10-13 16:44:17,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:18,172 INFO L124 PetriNetUnfolderBase]: 2462/5036 cut-off events. [2024-10-13 16:44:18,173 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-10-13 16:44:18,180 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 33617 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. [2024-10-13 16:44:18,201 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 50 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2024-10-13 16:44:18,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 89 transitions, 332 flow [2024-10-13 16:44:18,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:44:18,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:44:18,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2024-10-13 16:44:18,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-10-13 16:44:18,203 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 228 flow. Second operand 3 states and 158 transitions. [2024-10-13 16:44:18,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 89 transitions, 332 flow [2024-10-13 16:44:18,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 89 transitions, 310 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-13 16:44:18,210 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 210 flow [2024-10-13 16:44:18,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2024-10-13 16:44:18,211 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2024-10-13 16:44:18,212 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 210 flow [2024-10-13 16:44:18,213 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) [2024-10-13 16:44:18,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:18,213 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:18,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:44:18,213 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)] === [2024-10-13 16:44:18,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:18,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2048684077, now seen corresponding path program 1 times [2024-10-13 16:44:18,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:18,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681732116] [2024-10-13 16:44:18,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:18,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:44:18,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:18,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681732116] [2024-10-13 16:44:18,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681732116] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:44:18,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793716914] [2024-10-13 16:44:18,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:18,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:18,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:44:18,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:44:18,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:44:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:18,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:44:18,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:44:18,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:44:18,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:44:18,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:44:18,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793716914] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:44:18,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:44:18,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-13 16:44:18,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928643015] [2024-10-13 16:44:18,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:44:18,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 16:44:18,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:18,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 16:44:18,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 16:44:18,508 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-10-13 16:44:18,511 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) [2024-10-13 16:44:18,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:18,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-10-13 16:44:18,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:19,256 INFO L124 PetriNetUnfolderBase]: 2462/5040 cut-off events. [2024-10-13 16:44:19,257 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2024-10-13 16:44:19,264 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 33577 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. [2024-10-13 16:44:19,287 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2024-10-13 16:44:19,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 92 transitions, 339 flow [2024-10-13 16:44:19,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:44:19,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:44:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2024-10-13 16:44:19,290 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4342857142857143 [2024-10-13 16:44:19,290 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 210 flow. Second operand 7 states and 304 transitions. [2024-10-13 16:44:19,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 92 transitions, 339 flow [2024-10-13 16:44:19,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 92 transitions, 325 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:44:19,293 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 236 flow [2024-10-13 16:44:19,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2024-10-13 16:44:19,294 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2024-10-13 16:44:19,294 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 236 flow [2024-10-13 16:44:19,295 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) [2024-10-13 16:44:19,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:19,295 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:19,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:44:19,496 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 [2024-10-13 16:44:19,496 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)] === [2024-10-13 16:44:19,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:19,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1295635443, now seen corresponding path program 2 times [2024-10-13 16:44:19,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:19,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379741401] [2024-10-13 16:44:19,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:19,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:19,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:44:19,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:19,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379741401] [2024-10-13 16:44:19,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379741401] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:19,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:44:19,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:44:19,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69588972] [2024-10-13 16:44:19,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:19,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:44:19,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:19,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:44:19,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:44:19,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 100 [2024-10-13 16:44:19,650 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) [2024-10-13 16:44:19,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:19,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 100 [2024-10-13 16:44:19,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:20,328 INFO L124 PetriNetUnfolderBase]: 2387/4834 cut-off events. [2024-10-13 16:44:20,329 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2024-10-13 16:44:20,336 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 31471 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. [2024-10-13 16:44:20,353 INFO L140 encePairwiseOnDemand]: 94/100 looper letters, 66 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2024-10-13 16:44:20,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 101 transitions, 392 flow [2024-10-13 16:44:20,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:44:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:44:20,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-10-13 16:44:20,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5075 [2024-10-13 16:44:20,354 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 236 flow. Second operand 4 states and 203 transitions. [2024-10-13 16:44:20,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 101 transitions, 392 flow [2024-10-13 16:44:20,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 101 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:44:20,362 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 238 flow [2024-10-13 16:44:20,362 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2024-10-13 16:44:20,363 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2024-10-13 16:44:20,364 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 238 flow [2024-10-13 16:44:20,364 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) [2024-10-13 16:44:20,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:20,364 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:20,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:44:20,365 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:44:20,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:20,365 INFO L85 PathProgramCache]: Analyzing trace with hash 596349242, now seen corresponding path program 1 times [2024-10-13 16:44:20,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:20,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135166137] [2024-10-13 16:44:20,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:20,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:44:20,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:20,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135166137] [2024-10-13 16:44:20,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135166137] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:44:20,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117719726] [2024-10-13 16:44:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:20,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:20,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:44:20,562 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) [2024-10-13 16:44:20,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:44:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:20,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 16:44:20,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:44:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:44:20,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:44:20,881 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:44:20,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117719726] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:44:20,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:44:20,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-13 16:44:20,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728824428] [2024-10-13 16:44:20,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:44:20,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 16:44:20,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:20,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 16:44:20,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-13 16:44:20,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-10-13 16:44:20,905 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) [2024-10-13 16:44:20,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:20,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-10-13 16:44:20,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:21,713 INFO L124 PetriNetUnfolderBase]: 2382/4826 cut-off events. [2024-10-13 16:44:21,713 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2024-10-13 16:44:21,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8758 conditions, 4826 events. 2382/4826 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 31380 event pairs, 2231 based on Foata normal form. 4/4039 useless extension candidates. Maximal degree in co-relation 8682. Up to 3784 conditions per place. [2024-10-13 16:44:21,736 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2024-10-13 16:44:21,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 98 transitions, 416 flow [2024-10-13 16:44:21,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 16:44:21,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 16:44:21,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 594 transitions. [2024-10-13 16:44:21,739 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.396 [2024-10-13 16:44:21,739 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 238 flow. Second operand 15 states and 594 transitions. [2024-10-13 16:44:21,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 98 transitions, 416 flow [2024-10-13 16:44:21,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 98 transitions, 410 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:44:21,744 INFO L231 Difference]: Finished difference. Result has 111 places, 98 transitions, 329 flow [2024-10-13 16:44:21,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=329, PETRI_PLACES=111, PETRI_TRANSITIONS=98} [2024-10-13 16:44:21,744 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 24 predicate places. [2024-10-13 16:44:21,745 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 329 flow [2024-10-13 16:44:21,745 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) [2024-10-13 16:44:21,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:21,745 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:21,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:44:21,951 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 [2024-10-13 16:44:21,952 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:44:21,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:21,952 INFO L85 PathProgramCache]: Analyzing trace with hash 735197562, now seen corresponding path program 2 times [2024-10-13 16:44:21,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:21,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386551548] [2024-10-13 16:44:21,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:21,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:22,448 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:44:22,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:22,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386551548] [2024-10-13 16:44:22,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386551548] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:44:22,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026710559] [2024-10-13 16:44:22,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:44:22,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:22,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:44:22,452 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) [2024-10-13 16:44:22,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:44:22,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:44:22,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:44:22,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 16:44:22,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:44:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:44:22,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:44:23,051 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:44:23,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026710559] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:44:23,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:44:23,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-10-13 16:44:23,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790444425] [2024-10-13 16:44:23,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:44:23,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-13 16:44:23,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:23,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-13 16:44:23,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-10-13 16:44:23,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-10-13 16:44:23,083 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) [2024-10-13 16:44:23,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:23,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-10-13 16:44:23,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:24,274 INFO L124 PetriNetUnfolderBase]: 2382/4850 cut-off events. [2024-10-13 16:44:24,274 INFO L125 PetriNetUnfolderBase]: For 366/366 co-relation queries the response was YES. [2024-10-13 16:44:24,284 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 31355 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. [2024-10-13 16:44:24,305 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 31 changer transitions 0/114 dead transitions. [2024-10-13 16:44:24,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 114 transitions, 635 flow [2024-10-13 16:44:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-13 16:44:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-10-13 16:44:24,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1174 transitions. [2024-10-13 16:44:24,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37870967741935485 [2024-10-13 16:44:24,313 INFO L175 Difference]: Start difference. First operand has 111 places, 98 transitions, 329 flow. Second operand 31 states and 1174 transitions. [2024-10-13 16:44:24,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 114 transitions, 635 flow [2024-10-13 16:44:24,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 114 transitions, 625 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-13 16:44:24,318 INFO L231 Difference]: Finished difference. Result has 145 places, 114 transitions, 560 flow [2024-10-13 16:44:24,318 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=560, PETRI_PLACES=145, PETRI_TRANSITIONS=114} [2024-10-13 16:44:24,319 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 58 predicate places. [2024-10-13 16:44:24,319 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 114 transitions, 560 flow [2024-10-13 16:44:24,320 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) [2024-10-13 16:44:24,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:24,320 INFO L204 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:24,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 16:44:24,521 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 [2024-10-13 16:44:24,522 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:44:24,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:24,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1828743674, now seen corresponding path program 3 times [2024-10-13 16:44:24,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:24,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75782838] [2024-10-13 16:44:24,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:24,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:44:25,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:25,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75782838] [2024-10-13 16:44:25,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75782838] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:44:25,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196326988] [2024-10-13 16:44:25,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 16:44:25,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:25,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:44:25,909 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) [2024-10-13 16:44:25,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process