./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 3289d67d 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-3289d67-m [2024-11-17 07:49:43,973 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:49:44,059 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:49:44,066 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:49:44,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:49:44,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:49:44,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:49:44,097 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:49:44,098 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:49:44,099 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:49:44,100 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:49:44,102 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:49:44,102 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:49:44,103 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:49:44,103 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:49:44,103 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:49:44,103 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:49:44,104 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:49:44,104 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:49:44,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:49:44,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:49:44,106 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:49:44,107 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:49:44,107 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:49:44,107 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:49:44,107 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:49:44,108 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:49:44,108 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:49:44,108 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:49:44,108 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:49:44,109 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:49:44,109 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:49:44,109 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:49:44,109 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:49:44,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:49:44,110 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:49:44,110 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:49:44,110 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:49:44,111 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:49:44,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:49:44,111 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:49:44,112 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:49:44,112 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:49:44,112 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:49:44,112 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 [2024-11-17 07:49:44,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:49:44,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:49:44,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:49:44,439 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:49:44,440 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:49:44,441 INFO L431 ainManager$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 [2024-11-17 07:49:45,906 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:49:46,251 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:49:46,252 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2024-11-17 07:49:46,279 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/421db7f4d/79d3f7736979414590740b46cd0dbc4e/FLAG05afa1988 [2024-11-17 07:49:46,496 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/421db7f4d/79d3f7736979414590740b46cd0dbc4e [2024-11-17 07:49:46,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:49:46,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:49:46,504 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:49:46,504 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:49:46,510 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:49:46,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:49:46" (1/1) ... [2024-11-17 07:49:46,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@242a0041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:49:46, skipping insertion in model container [2024-11-17 07:49:46,512 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:49:46" (1/1) ... [2024-11-17 07:49:46,575 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:49:47,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:49:47,313 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:49:47,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:49:47,524 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:49:47,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:49:47 WrapperNode [2024-11-17 07:49:47,525 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:49:47,526 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:49:47,526 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:49:47,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:49:47,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:49:47" (1/1) ... [2024-11-17 07:49:47,574 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:49:47" (1/1) ... [2024-11-17 07:49:47,667 INFO L138 Inliner]: procedures = 280, calls = 1605, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1791 [2024-11-17 07:49:47,668 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:49:47,668 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:49:47,669 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:49:47,669 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:49:47,679 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:49:47" (1/1) ... [2024-11-17 07:49:47,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:49:47" (1/1) ... [2024-11-17 07:49:47,696 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:49:47" (1/1) ... [2024-11-17 07:49:47,760 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]. [2024-11-17 07:49:47,760 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:49:47" (1/1) ... [2024-11-17 07:49:47,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:49:47" (1/1) ... [2024-11-17 07:49:47,805 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:49:47" (1/1) ... [2024-11-17 07:49:47,808 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:49:47" (1/1) ... [2024-11-17 07:49:47,815 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:49:47" (1/1) ... [2024-11-17 07:49:47,822 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:49:47" (1/1) ... [2024-11-17 07:49:47,840 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:49:47,841 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:49:47,841 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:49:47,841 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:49:47,845 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:49:47" (1/1) ... [2024-11-17 07:49:47,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:49:47,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:49:47,887 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) [2024-11-17 07:49:47,893 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 [2024-11-17 07:49:48,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 07:49:48,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-17 07:49:48,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-17 07:49:48,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-17 07:49:48,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-17 07:49:48,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-17 07:49:48,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-17 07:49:48,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-17 07:49:48,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-17 07:49:48,023 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-17 07:49:48,024 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-17 07:49:48,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 07:49:48,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-17 07:49:48,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-17 07:49:48,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-17 07:49:48,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-17 07:49:48,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-17 07:49:48,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-17 07:49:48,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-17 07:49:48,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-17 07:49:48,026 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 07:49:48,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:49:48,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:49:48,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 07:49:48,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 07:49:48,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-17 07:49:48,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-17 07:49:48,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-17 07:49:48,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-17 07:49:48,029 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-17 07:49:48,029 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-17 07:49:48,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:49:48,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:49:48,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 07:49:48,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 07:49:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-17 07:49:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-17 07:49:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-17 07:49:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-17 07:49:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 07:49:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 07:49:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:49:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 07:49:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-17 07:49:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-17 07:49:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-17 07:49:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-17 07:49:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-17 07:49:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-17 07:49:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-17 07:49:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:49:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:49:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 07:49:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 07:49:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-17 07:49:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-17 07:49:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-17 07:49:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-17 07:49:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:49:48,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:49:48,042 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:49:48,289 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:49:48,292 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:49:50,144 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1051: havoc main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset; [2024-11-17 07:49:50,145 INFO L1250 $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 [2024-11-17 07:49:50,145 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1052: havoc main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset; [2024-11-17 07:49:50,145 INFO L1250 $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 [2024-11-17 07:49:50,147 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:49:50,147 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:50:30,013 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:50:30,014 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:50:30,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:50:30 BoogieIcfgContainer [2024-11-17 07:50:30,014 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:50:30,016 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:50:30,016 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:50:30,019 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:50:30,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:49:46" (1/3) ... [2024-11-17 07:50:30,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7f4192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:50:30, skipping insertion in model container [2024-11-17 07:50:30,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:49:47" (2/3) ... [2024-11-17 07:50:30,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7f4192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:50:30, skipping insertion in model container [2024-11-17 07:50:30,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:50:30" (3/3) ... [2024-11-17 07:50:30,026 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2024-11-17 07:50:30,044 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:50:30,044 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-11-17 07:50:30,044 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:50:30,158 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-17 07:50:30,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 118 transitions, 256 flow [2024-11-17 07:50:30,354 INFO L124 PetriNetUnfolderBase]: 50/254 cut-off events. [2024-11-17 07:50:30,354 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-17 07:50:30,361 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. [2024-11-17 07:50:30,361 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 118 transitions, 256 flow [2024-11-17 07:50:30,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 118 transitions, 256 flow [2024-11-17 07:50:30,375 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:50:30,383 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;@68ab10b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:50:30,383 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-17 07:50:30,429 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:50:30,429 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-17 07:50:30,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:50:30,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:30,431 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 07:50:30,432 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)] === [2024-11-17 07:50:30,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:30,436 INFO L85 PathProgramCache]: Analyzing trace with hash 114627332, now seen corresponding path program 1 times [2024-11-17 07:50:30,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:30,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015191102] [2024-11-17 07:50:30,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:30,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:31,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:31,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015191102] [2024-11-17 07:50:31,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015191102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:50:31,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:50:31,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:50:31,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611610119] [2024-11-17 07:50:31,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:50:31,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:50:31,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:31,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:50:31,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:50:31,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 118 [2024-11-17 07:50:31,599 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) [2024-11-17 07:50:31,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:31,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 118 [2024-11-17 07:50:31,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:32,856 INFO L124 PetriNetUnfolderBase]: 2462/5291 cut-off events. [2024-11-17 07:50:32,857 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2024-11-17 07:50:32,870 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. [2024-11-17 07:50:32,901 INFO L140 encePairwiseOnDemand]: 96/118 looper letters, 54 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2024-11-17 07:50:32,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 104 transitions, 342 flow [2024-11-17 07:50:32,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:50:32,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:50:32,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 265 transitions. [2024-11-17 07:50:32,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5614406779661016 [2024-11-17 07:50:32,921 INFO L175 Difference]: Start difference. First operand has 100 places, 118 transitions, 256 flow. Second operand 4 states and 265 transitions. [2024-11-17 07:50:32,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 104 transitions, 342 flow [2024-11-17 07:50:32,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 104 transitions, 342 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:50:32,932 INFO L231 Difference]: Finished difference. Result has 105 places, 104 transitions, 248 flow [2024-11-17 07:50:32,934 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} [2024-11-17 07:50:32,940 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 5 predicate places. [2024-11-17 07:50:32,940 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 104 transitions, 248 flow [2024-11-17 07:50:32,941 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) [2024-11-17 07:50:32,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:32,941 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 07:50:32,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:50:32,942 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)] === [2024-11-17 07:50:32,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:32,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1493749276, now seen corresponding path program 1 times [2024-11-17 07:50:32,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:32,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006286944] [2024-11-17 07:50:32,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:32,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:33,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:33,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:33,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006286944] [2024-11-17 07:50:33,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006286944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:50:33,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026124747] [2024-11-17 07:50:33,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:33,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:50:33,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:50:33,682 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) [2024-11-17 07:50:33,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:50:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:34,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 3764 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:50:34,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:50:34,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:34,429 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:50:34,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026124747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:50:34,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:50:34,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:50:34,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596860186] [2024-11-17 07:50:34,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:50:34,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:50:34,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:34,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:50:34,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:50:34,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 118 [2024-11-17 07:50:34,449 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) [2024-11-17 07:50:34,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:34,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 118 [2024-11-17 07:50:34,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:35,489 INFO L124 PetriNetUnfolderBase]: 2462/5290 cut-off events. [2024-11-17 07:50:35,489 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2024-11-17 07:50:35,504 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. [2024-11-17 07:50:35,529 INFO L140 encePairwiseOnDemand]: 113/118 looper letters, 50 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2024-11-17 07:50:35,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 356 flow [2024-11-17 07:50:35,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:50:35,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:50:35,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 339 transitions. [2024-11-17 07:50:35,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4788135593220339 [2024-11-17 07:50:35,537 INFO L175 Difference]: Start difference. First operand has 105 places, 104 transitions, 248 flow. Second operand 6 states and 339 transitions. [2024-11-17 07:50:35,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 356 flow [2024-11-17 07:50:35,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 103 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:50:35,542 INFO L231 Difference]: Finished difference. Result has 108 places, 103 transitions, 254 flow [2024-11-17 07:50:35,543 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} [2024-11-17 07:50:35,543 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 8 predicate places. [2024-11-17 07:50:35,544 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 103 transitions, 254 flow [2024-11-17 07:50:35,544 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) [2024-11-17 07:50:35,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:35,544 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-17 07:50:35,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:50:35,745 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 [2024-11-17 07:50:35,746 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)] === [2024-11-17 07:50:35,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:35,746 INFO L85 PathProgramCache]: Analyzing trace with hash 938416333, now seen corresponding path program 1 times [2024-11-17 07:50:35,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:35,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854321356] [2024-11-17 07:50:35,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:35,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:36,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:50:36,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:36,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854321356] [2024-11-17 07:50:36,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854321356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:50:36,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:50:36,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:50:36,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943123730] [2024-11-17 07:50:36,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:50:36,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:50:36,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:36,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:50:36,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:50:36,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 118 [2024-11-17 07:50:36,088 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) [2024-11-17 07:50:36,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:36,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 118 [2024-11-17 07:50:36,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:36,754 INFO L124 PetriNetUnfolderBase]: 2462/5289 cut-off events. [2024-11-17 07:50:36,754 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-11-17 07:50:36,767 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. [2024-11-17 07:50:36,796 INFO L140 encePairwiseOnDemand]: 115/118 looper letters, 50 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2024-11-17 07:50:36,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 102 transitions, 358 flow [2024-11-17 07:50:36,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:50:36,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:50:36,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2024-11-17 07:50:36,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.556497175141243 [2024-11-17 07:50:36,799 INFO L175 Difference]: Start difference. First operand has 108 places, 103 transitions, 254 flow. Second operand 3 states and 197 transitions. [2024-11-17 07:50:36,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 102 transitions, 358 flow [2024-11-17 07:50:36,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 102 transitions, 348 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-17 07:50:36,805 INFO L231 Difference]: Finished difference. Result has 105 places, 102 transitions, 248 flow [2024-11-17 07:50:36,806 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} [2024-11-17 07:50:36,807 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 5 predicate places. [2024-11-17 07:50:36,807 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 248 flow [2024-11-17 07:50:36,808 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) [2024-11-17 07:50:36,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:36,808 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:50:36,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:50:36,808 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)] === [2024-11-17 07:50:36,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:36,809 INFO L85 PathProgramCache]: Analyzing trace with hash 878194793, now seen corresponding path program 1 times [2024-11-17 07:50:36,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:36,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989918825] [2024-11-17 07:50:36,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:36,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:37,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:37,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:37,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989918825] [2024-11-17 07:50:37,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989918825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:50:37,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621851357] [2024-11-17 07:50:37,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:37,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:50:37,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:50:37,465 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) [2024-11-17 07:50:37,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:50:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:38,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 3754 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:50:38,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:50:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:38,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:50:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:50:38,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621851357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:50:38,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:50:38,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-17 07:50:38,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777864346] [2024-11-17 07:50:38,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:50:38,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 07:50:38,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:38,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 07:50:38,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-17 07:50:38,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 118 [2024-11-17 07:50:38,237 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) [2024-11-17 07:50:38,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:38,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 118 [2024-11-17 07:50:38,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:38,945 INFO L124 PetriNetUnfolderBase]: 2462/5295 cut-off events. [2024-11-17 07:50:38,946 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-11-17 07:50:38,957 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. [2024-11-17 07:50:38,976 INFO L140 encePairwiseOnDemand]: 114/118 looper letters, 51 selfloop transitions, 7 changer transitions 0/105 dead transitions. [2024-11-17 07:50:38,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 105 transitions, 386 flow [2024-11-17 07:50:38,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:50:38,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:50:38,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 389 transitions. [2024-11-17 07:50:38,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47094430992736075 [2024-11-17 07:50:38,979 INFO L175 Difference]: Start difference. First operand has 105 places, 102 transitions, 248 flow. Second operand 7 states and 389 transitions. [2024-11-17 07:50:38,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 105 transitions, 386 flow [2024-11-17 07:50:38,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 105 transitions, 372 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:50:38,982 INFO L231 Difference]: Finished difference. Result has 111 places, 105 transitions, 281 flow [2024-11-17 07:50:38,983 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} [2024-11-17 07:50:38,983 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2024-11-17 07:50:38,984 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 105 transitions, 281 flow [2024-11-17 07:50:38,984 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) [2024-11-17 07:50:38,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:38,984 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:50:39,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:50:39,185 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 [2024-11-17 07:50:39,185 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)] === [2024-11-17 07:50:39,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:39,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1127621975, now seen corresponding path program 2 times [2024-11-17 07:50:39,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:39,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792664806] [2024-11-17 07:50:39,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:39,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 07:50:39,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:39,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792664806] [2024-11-17 07:50:39,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792664806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:50:39,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:50:39,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:50:39,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678441612] [2024-11-17 07:50:39,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:50:39,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:50:39,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:39,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:50:39,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:50:39,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 118 [2024-11-17 07:50:39,837 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) [2024-11-17 07:50:39,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:39,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 118 [2024-11-17 07:50:39,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:40,458 INFO L124 PetriNetUnfolderBase]: 2392/5149 cut-off events. [2024-11-17 07:50:40,458 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2024-11-17 07:50:40,469 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. [2024-11-17 07:50:40,488 INFO L140 encePairwiseOnDemand]: 112/118 looper letters, 67 selfloop transitions, 3 changer transitions 0/114 dead transitions. [2024-11-17 07:50:40,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 114 transitions, 439 flow [2024-11-17 07:50:40,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:50:40,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:50:40,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2024-11-17 07:50:40,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5338983050847458 [2024-11-17 07:50:40,491 INFO L175 Difference]: Start difference. First operand has 111 places, 105 transitions, 281 flow. Second operand 4 states and 252 transitions. [2024-11-17 07:50:40,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 114 transitions, 439 flow [2024-11-17 07:50:40,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 114 transitions, 431 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-17 07:50:40,495 INFO L231 Difference]: Finished difference. Result has 111 places, 103 transitions, 279 flow [2024-11-17 07:50:40,495 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} [2024-11-17 07:50:40,496 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2024-11-17 07:50:40,496 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 103 transitions, 279 flow [2024-11-17 07:50:40,496 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) [2024-11-17 07:50:40,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:40,496 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:50:40,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:50:40,497 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)] === [2024-11-17 07:50:40,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:40,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1079456756, now seen corresponding path program 1 times [2024-11-17 07:50:40,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:40,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583739539] [2024-11-17 07:50:40,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:40,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:50:41,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:41,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583739539] [2024-11-17 07:50:41,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583739539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:50:41,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326979244] [2024-11-17 07:50:41,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:41,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:50:41,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:50:41,124 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) [2024-11-17 07:50:41,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:50:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:41,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 3888 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 07:50:41,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:50:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:50:42,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:50:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:50:42,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326979244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:50:42,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:50:42,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-17 07:50:42,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142876635] [2024-11-17 07:50:42,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:50:42,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 07:50:42,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:42,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 07:50:42,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-17 07:50:42,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 118 [2024-11-17 07:50:42,163 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) [2024-11-17 07:50:42,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:42,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 118 [2024-11-17 07:50:42,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:42,922 INFO L124 PetriNetUnfolderBase]: 2382/5100 cut-off events. [2024-11-17 07:50:42,922 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2024-11-17 07:50:42,931 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. [2024-11-17 07:50:42,948 INFO L140 encePairwiseOnDemand]: 114/118 looper letters, 51 selfloop transitions, 15 changer transitions 0/111 dead transitions. [2024-11-17 07:50:42,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 111 transitions, 475 flow [2024-11-17 07:50:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 07:50:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-17 07:50:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 775 transitions. [2024-11-17 07:50:42,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4378531073446328 [2024-11-17 07:50:42,954 INFO L175 Difference]: Start difference. First operand has 111 places, 103 transitions, 279 flow. Second operand 15 states and 775 transitions. [2024-11-17 07:50:42,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 111 transitions, 475 flow [2024-11-17 07:50:42,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 111 transitions, 469 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:50:42,962 INFO L231 Difference]: Finished difference. Result has 126 places, 111 transitions, 386 flow [2024-11-17 07:50:42,962 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} [2024-11-17 07:50:42,963 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 26 predicate places. [2024-11-17 07:50:42,963 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 111 transitions, 386 flow [2024-11-17 07:50:42,964 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) [2024-11-17 07:50:42,964 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:42,964 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:50:42,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 07:50:43,164 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 [2024-11-17 07:50:43,165 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)] === [2024-11-17 07:50:43,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:43,166 INFO L85 PathProgramCache]: Analyzing trace with hash -376338316, now seen corresponding path program 2 times [2024-11-17 07:50:43,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:43,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152552979] [2024-11-17 07:50:43,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:43,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:50:44,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:44,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152552979] [2024-11-17 07:50:44,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152552979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:50:44,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744014966] [2024-11-17 07:50:44,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:50:44,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:50:44,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:50:44,404 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) [2024-11-17 07:50:44,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:50:45,054 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:50:45,055 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:50:45,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 4112 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-17 07:50:45,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:50:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:50:45,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:50:45,417 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:50:45,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744014966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:50:45,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:50:45,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-11-17 07:50:45,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613588599] [2024-11-17 07:50:45,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:50:45,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-17 07:50:45,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:50:45,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-17 07:50:45,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-11-17 07:50:45,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 118 [2024-11-17 07:50:45,454 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) [2024-11-17 07:50:45,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:50:45,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 118 [2024-11-17 07:50:45,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:50:46,426 INFO L124 PetriNetUnfolderBase]: 2382/5132 cut-off events. [2024-11-17 07:50:46,426 INFO L125 PetriNetUnfolderBase]: For 794/794 co-relation queries the response was YES. [2024-11-17 07:50:46,437 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. [2024-11-17 07:50:46,643 INFO L140 encePairwiseOnDemand]: 114/118 looper letters, 51 selfloop transitions, 31 changer transitions 0/127 dead transitions. [2024-11-17 07:50:46,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 127 transitions, 726 flow [2024-11-17 07:50:46,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-17 07:50:46,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-17 07:50:46,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1547 transitions. [2024-11-17 07:50:46,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4229086932750137 [2024-11-17 07:50:46,656 INFO L175 Difference]: Start difference. First operand has 126 places, 111 transitions, 386 flow. Second operand 31 states and 1547 transitions. [2024-11-17 07:50:46,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 127 transitions, 726 flow [2024-11-17 07:50:46,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 127 transitions, 708 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-17 07:50:46,674 INFO L231 Difference]: Finished difference. Result has 160 places, 127 transitions, 641 flow [2024-11-17 07:50:46,675 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} [2024-11-17 07:50:46,675 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 60 predicate places. [2024-11-17 07:50:46,675 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 127 transitions, 641 flow [2024-11-17 07:50:46,676 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) [2024-11-17 07:50:46,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:50:46,676 INFO L204 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 15, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:50:46,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 07:50:46,877 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 [2024-11-17 07:50:46,877 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)] === [2024-11-17 07:50:46,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:50:46,884 INFO L85 PathProgramCache]: Analyzing trace with hash -413453964, now seen corresponding path program 3 times [2024-11-17 07:50:46,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:50:46,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130902233] [2024-11-17 07:50:46,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:50:46,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:50:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:50:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:50:49,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:50:49,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130902233] [2024-11-17 07:50:49,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130902233] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:50:49,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003040683] [2024-11-17 07:50:49,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 07:50:49,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:50:49,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:50:49,198 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:50:49,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process