./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 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/weaver/popl20-min-max-dec.wvr.c -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 47814a6c2066a31334f0b50a42e69cfeb567d5dd7f02dc6c703588c90e067366 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 22:02:48,375 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 22:02:48,449 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 22:02:48,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 22:02:48,459 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 22:02:48,486 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 22:02:48,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 22:02:48,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 22:02:48,489 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 22:02:48,491 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 22:02:48,491 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 22:02:48,491 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 22:02:48,492 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 22:02:48,492 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 22:02:48,494 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 22:02:48,494 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 22:02:48,495 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 22:02:48,495 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 22:02:48,495 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 22:02:48,496 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 22:02:48,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 22:02:48,500 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 22:02:48,500 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 22:02:48,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 22:02:48,501 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 22:02:48,501 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 22:02:48,501 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 22:02:48,502 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 22:02:48,502 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 22:02:48,502 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 22:02:48,502 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 22:02:48,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 22:02:48,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 22:02:48,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 22:02:48,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:02:48,503 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 22:02:48,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 22:02:48,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 22:02:48,504 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 22:02:48,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 22:02:48,505 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 22:02:48,507 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 22:02:48,507 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 22:02:48,508 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 22:02:48,508 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47814a6c2066a31334f0b50a42e69cfeb567d5dd7f02dc6c703588c90e067366 [2024-11-20 22:02:48,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 22:02:48,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 22:02:48,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 22:02:48,843 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 22:02:48,844 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 22:02:48,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2024-11-20 22:02:50,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 22:02:50,499 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 22:02:50,499 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2024-11-20 22:02:50,507 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de45d8487/f97d6e1b9ea84f0f863db184c159e640/FLAGb2f9fca53 [2024-11-20 22:02:50,849 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de45d8487/f97d6e1b9ea84f0f863db184c159e640 [2024-11-20 22:02:50,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 22:02:50,853 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 22:02:50,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 22:02:50,854 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 22:02:50,861 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 22:02:50,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:02:50" (1/1) ... [2024-11-20 22:02:50,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f3368b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:50, skipping insertion in model container [2024-11-20 22:02:50,863 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:02:50" (1/1) ... [2024-11-20 22:02:50,883 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 22:02:51,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:02:51,099 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 22:02:51,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:02:51,139 INFO L204 MainTranslator]: Completed translation [2024-11-20 22:02:51,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:51 WrapperNode [2024-11-20 22:02:51,140 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 22:02:51,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 22:02:51,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 22:02:51,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 22:02:51,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:51" (1/1) ... [2024-11-20 22:02:51,156 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:51" (1/1) ... [2024-11-20 22:02:51,180 INFO L138 Inliner]: procedures = 23, calls = 26, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 126 [2024-11-20 22:02:51,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 22:02:51,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 22:02:51,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 22:02:51,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 22:02:51,191 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:51" (1/1) ... [2024-11-20 22:02:51,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:51" (1/1) ... [2024-11-20 22:02:51,194 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:51" (1/1) ... [2024-11-20 22:02:51,210 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-20 22:02:51,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:51" (1/1) ... [2024-11-20 22:02:51,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:51" (1/1) ... [2024-11-20 22:02:51,216 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:51" (1/1) ... [2024-11-20 22:02:51,221 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:51" (1/1) ... [2024-11-20 22:02:51,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:51" (1/1) ... [2024-11-20 22:02:51,224 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:51" (1/1) ... [2024-11-20 22:02:51,227 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 22:02:51,228 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 22:02:51,228 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 22:02:51,228 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 22:02:51,229 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:51" (1/1) ... [2024-11-20 22:02:51,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:02:51,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:51,266 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) [2024-11-20 22:02:51,269 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 [2024-11-20 22:02:51,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 22:02:51,322 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 22:02:51,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 22:02:51,322 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 22:02:51,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 22:02:51,323 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 22:02:51,323 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 22:02:51,323 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-20 22:02:51,323 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-20 22:02:51,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 22:02:51,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 22:02:51,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 22:02:51,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 22:02:51,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 22:02:51,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 22:02:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 22:02:51,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 22:02:51,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 22:02:51,329 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 22:02:51,554 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 22:02:51,558 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 22:02:51,868 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 22:02:51,872 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 22:02:52,068 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 22:02:52,068 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-20 22:02:52,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:02:52 BoogieIcfgContainer [2024-11-20 22:02:52,069 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 22:02:52,072 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 22:02:52,072 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 22:02:52,076 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 22:02:52,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:02:50" (1/3) ... [2024-11-20 22:02:52,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f9989f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:02:52, skipping insertion in model container [2024-11-20 22:02:52,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:02:51" (2/3) ... [2024-11-20 22:02:52,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f9989f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:02:52, skipping insertion in model container [2024-11-20 22:02:52,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:02:52" (3/3) ... [2024-11-20 22:02:52,079 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2024-11-20 22:02:52,099 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 22:02:52,099 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-20 22:02:52,099 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 22:02:52,200 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-20 22:02:52,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 84 transitions, 196 flow [2024-11-20 22:02:52,290 INFO L124 PetriNetUnfolderBase]: 7/80 cut-off events. [2024-11-20 22:02:52,290 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-20 22:02:52,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 80 events. 7/80 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 230 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2024-11-20 22:02:52,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 84 transitions, 196 flow [2024-11-20 22:02:52,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 78 transitions, 177 flow [2024-11-20 22:02:52,314 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 22:02:52,324 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;@5a20d55d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 22:02:52,325 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-20 22:02:52,331 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 22:02:52,332 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-11-20 22:02:52,332 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 22:02:52,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:52,333 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-20 22:02:52,334 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-20 22:02:52,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:52,340 INFO L85 PathProgramCache]: Analyzing trace with hash 508805331, now seen corresponding path program 1 times [2024-11-20 22:02:52,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:52,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502395967] [2024-11-20 22:02:52,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:52,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:52,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:52,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:52,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502395967] [2024-11-20 22:02:52,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502395967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:52,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:02:52,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:02:52,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551971680] [2024-11-20 22:02:52,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:52,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:02:52,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:52,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:02:52,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:02:52,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-20 22:02:52,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2024-11-20 22:02:52,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:52,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-20 22:02:52,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:55,876 INFO L124 PetriNetUnfolderBase]: 17677/29142 cut-off events. [2024-11-20 22:02:55,877 INFO L125 PetriNetUnfolderBase]: For 1185/1185 co-relation queries the response was YES. [2024-11-20 22:02:55,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51996 conditions, 29142 events. 17677/29142 cut-off events. For 1185/1185 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 246080 event pairs, 12761 based on Foata normal form. 1/25265 useless extension candidates. Maximal degree in co-relation 49383. Up to 21575 conditions per place. [2024-11-20 22:02:56,207 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 41 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2024-11-20 22:02:56,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 81 transitions, 273 flow [2024-11-20 22:02:56,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:02:56,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:02:56,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-11-20 22:02:56,225 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6160714285714286 [2024-11-20 22:02:56,227 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 177 flow. Second operand 4 states and 207 transitions. [2024-11-20 22:02:56,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 81 transitions, 273 flow [2024-11-20 22:02:56,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 81 transitions, 260 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-20 22:02:56,250 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 193 flow [2024-11-20 22:02:56,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2024-11-20 22:02:56,258 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2024-11-20 22:02:56,259 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 193 flow [2024-11-20 22:02:56,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2024-11-20 22:02:56,260 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:56,260 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-20 22:02:56,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 22:02:56,261 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-20 22:02:56,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:56,262 INFO L85 PathProgramCache]: Analyzing trace with hash 880540487, now seen corresponding path program 1 times [2024-11-20 22:02:56,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:56,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718528696] [2024-11-20 22:02:56,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:56,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:56,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:56,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718528696] [2024-11-20 22:02:56,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718528696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:56,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697480931] [2024-11-20 22:02:56,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:56,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:56,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:56,459 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) [2024-11-20 22:02:56,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 22:02:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:56,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:02:56,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:56,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:56,603 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:02:56,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697480931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:02:56,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:02:56,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-20 22:02:56,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683984088] [2024-11-20 22:02:56,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:02:56,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 22:02:56,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:02:56,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:02:56,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 22:02:56,619 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-20 22:02:56,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 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) [2024-11-20 22:02:56,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:02:56,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-20 22:02:56,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:02:59,210 INFO L124 PetriNetUnfolderBase]: 17677/29141 cut-off events. [2024-11-20 22:02:59,214 INFO L125 PetriNetUnfolderBase]: For 229/229 co-relation queries the response was YES. [2024-11-20 22:02:59,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51671 conditions, 29141 events. 17677/29141 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 246035 event pairs, 12761 based on Foata normal form. 1/25265 useless extension candidates. Maximal degree in co-relation 51644. Up to 21570 conditions per place. [2024-11-20 22:02:59,533 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 37 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2024-11-20 22:02:59,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 277 flow [2024-11-20 22:02:59,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:02:59,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:02:59,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 285 transitions. [2024-11-20 22:02:59,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5654761904761905 [2024-11-20 22:02:59,537 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 193 flow. Second operand 6 states and 285 transitions. [2024-11-20 22:02:59,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 277 flow [2024-11-20 22:02:59,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:02:59,540 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 200 flow [2024-11-20 22:02:59,540 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2024-11-20 22:02:59,541 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2024-11-20 22:02:59,541 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 200 flow [2024-11-20 22:02:59,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 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) [2024-11-20 22:02:59,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:02:59,542 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-20 22:02:59,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 22:02:59,745 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 [2024-11-20 22:02:59,747 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-20 22:02:59,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:02:59,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1526951836, now seen corresponding path program 1 times [2024-11-20 22:02:59,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:02:59,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780221250] [2024-11-20 22:02:59,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:59,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:02:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:59,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:02:59,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780221250] [2024-11-20 22:02:59,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780221250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:02:59,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060026238] [2024-11-20 22:02:59,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:02:59,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:02:59,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:02:59,881 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) [2024-11-20 22:02:59,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 22:02:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:02:59,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:02:59,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:02:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:02:59,972 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:03:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:03:00,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060026238] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:03:00,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:03:00,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-20 22:03:00,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738356990] [2024-11-20 22:03:00,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:03:00,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 22:03:00,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:03:00,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 22:03:00,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 22:03:00,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-20 22:03:00,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 200 flow. Second operand has 12 states, 12 states have (on average 41.166666666666664) internal successors, (494), 12 states have internal predecessors, (494), 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) [2024-11-20 22:03:00,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:03:00,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-20 22:03:00,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:03:02,064 INFO L124 PetriNetUnfolderBase]: 17680/29153 cut-off events. [2024-11-20 22:03:02,064 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2024-11-20 22:03:02,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51715 conditions, 29153 events. 17680/29153 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 246179 event pairs, 12761 based on Foata normal form. 3/25277 useless extension candidates. Maximal degree in co-relation 51645. Up to 21577 conditions per place. [2024-11-20 22:03:02,264 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 40 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2024-11-20 22:03:02,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 360 flow [2024-11-20 22:03:02,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:03:02,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:03:02,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 456 transitions. [2024-11-20 22:03:02,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-20 22:03:02,269 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 200 flow. Second operand 10 states and 456 transitions. [2024-11-20 22:03:02,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 360 flow [2024-11-20 22:03:02,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 314 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-20 22:03:02,276 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 252 flow [2024-11-20 22:03:02,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=252, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-20 22:03:02,279 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 8 predicate places. [2024-11-20 22:03:02,280 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 252 flow [2024-11-20 22:03:02,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 41.166666666666664) internal successors, (494), 12 states have internal predecessors, (494), 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) [2024-11-20 22:03:02,281 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:03:02,281 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:03:02,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 22:03:02,481 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,SelfDestructingSolverStorable2 [2024-11-20 22:03:02,482 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-20 22:03:02,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:03:02,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1146063111, now seen corresponding path program 1 times [2024-11-20 22:03:02,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:03:02,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749645147] [2024-11-20 22:03:02,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:03:02,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:03:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:03:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:03:02,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:03:02,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749645147] [2024-11-20 22:03:02,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749645147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:03:02,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:03:02,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 22:03:02,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555116099] [2024-11-20 22:03:02,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:03:02,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:03:02,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:03:02,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:03:02,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:03:02,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-20 22:03:02,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2024-11-20 22:03:02,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:03:02,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-20 22:03:02,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:03:06,175 INFO L124 PetriNetUnfolderBase]: 35361/59053 cut-off events. [2024-11-20 22:03:06,175 INFO L125 PetriNetUnfolderBase]: For 567/567 co-relation queries the response was YES. [2024-11-20 22:03:06,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103912 conditions, 59053 events. 35361/59053 cut-off events. For 567/567 co-relation queries the response was YES. Maximal size of possible extension queue 2680. Compared 544043 event pairs, 8077 based on Foata normal form. 955/52276 useless extension candidates. Maximal degree in co-relation 103878. Up to 28557 conditions per place. [2024-11-20 22:03:06,570 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 121 selfloop transitions, 4 changer transitions 1/159 dead transitions. [2024-11-20 22:03:06,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 159 transitions, 652 flow [2024-11-20 22:03:06,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 22:03:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 22:03:06,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 308 transitions. [2024-11-20 22:03:06,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-11-20 22:03:06,572 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 252 flow. Second operand 5 states and 308 transitions. [2024-11-20 22:03:06,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 159 transitions, 652 flow [2024-11-20 22:03:06,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 159 transitions, 641 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-20 22:03:06,576 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 269 flow [2024-11-20 22:03:06,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2024-11-20 22:03:06,578 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2024-11-20 22:03:06,578 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 269 flow [2024-11-20 22:03:06,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2024-11-20 22:03:06,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:03:06,579 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:03:06,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 22:03:06,579 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-20 22:03:06,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:03:06,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1101535529, now seen corresponding path program 1 times [2024-11-20 22:03:06,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:03:06,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778609458] [2024-11-20 22:03:06,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:03:06,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:03:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:03:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:03:06,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:03:06,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778609458] [2024-11-20 22:03:06,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778609458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:03:06,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:03:06,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:03:06,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141548608] [2024-11-20 22:03:06,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:03:06,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:03:06,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:03:06,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:03:06,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:03:06,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-20 22:03:06,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2024-11-20 22:03:06,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:03:06,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-20 22:03:06,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:03:09,130 INFO L124 PetriNetUnfolderBase]: 23331/36505 cut-off events. [2024-11-20 22:03:09,131 INFO L125 PetriNetUnfolderBase]: For 2109/2141 co-relation queries the response was YES. [2024-11-20 22:03:09,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68252 conditions, 36505 events. 23331/36505 cut-off events. For 2109/2141 co-relation queries the response was YES. Maximal size of possible extension queue 1838. Compared 298533 event pairs, 9859 based on Foata normal form. 32/33091 useless extension candidates. Maximal degree in co-relation 68215. Up to 17775 conditions per place. [2024-11-20 22:03:09,433 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 91 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2024-11-20 22:03:09,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 132 transitions, 559 flow [2024-11-20 22:03:09,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:03:09,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:03:09,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2024-11-20 22:03:09,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2024-11-20 22:03:09,435 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 269 flow. Second operand 4 states and 248 transitions. [2024-11-20 22:03:09,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 132 transitions, 559 flow [2024-11-20 22:03:09,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 132 transitions, 557 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:03:09,452 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 271 flow [2024-11-20 22:03:09,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=95, 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=271, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2024-11-20 22:03:09,454 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 14 predicate places. [2024-11-20 22:03:09,454 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 271 flow [2024-11-20 22:03:09,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2024-11-20 22:03:09,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:03:09,455 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:03:09,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 22:03:09,455 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-20 22:03:09,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:03:09,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1101535528, now seen corresponding path program 1 times [2024-11-20 22:03:09,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:03:09,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372765165] [2024-11-20 22:03:09,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:03:09,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:03:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:03:09,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:03:09,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:03:09,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372765165] [2024-11-20 22:03:09,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372765165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:03:09,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:03:09,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:03:09,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114602804] [2024-11-20 22:03:09,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:03:09,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:03:09,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:03:09,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:03:09,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:03:09,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-20 22:03:09,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2024-11-20 22:03:09,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:03:09,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-20 22:03:09,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:03:12,407 INFO L124 PetriNetUnfolderBase]: 23486/39309 cut-off events. [2024-11-20 22:03:12,408 INFO L125 PetriNetUnfolderBase]: For 4237/4269 co-relation queries the response was YES. [2024-11-20 22:03:12,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73189 conditions, 39309 events. 23486/39309 cut-off events. For 4237/4269 co-relation queries the response was YES. Maximal size of possible extension queue 2000. Compared 349788 event pairs, 16552 based on Foata normal form. 33/35611 useless extension candidates. Maximal degree in co-relation 73155. Up to 28671 conditions per place. [2024-11-20 22:03:12,713 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 49 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-11-20 22:03:12,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 89 transitions, 370 flow [2024-11-20 22:03:12,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:03:12,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:03:12,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2024-11-20 22:03:12,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-20 22:03:12,714 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 271 flow. Second operand 3 states and 168 transitions. [2024-11-20 22:03:12,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 89 transitions, 370 flow [2024-11-20 22:03:12,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 89 transitions, 364 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 22:03:12,729 INFO L231 Difference]: Finished difference. Result has 97 places, 89 transitions, 266 flow [2024-11-20 22:03:12,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=97, PETRI_TRANSITIONS=89} [2024-11-20 22:03:12,730 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2024-11-20 22:03:12,730 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 89 transitions, 266 flow [2024-11-20 22:03:12,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2024-11-20 22:03:12,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:03:12,731 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:03:12,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 22:03:12,731 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-20 22:03:12,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:03:12,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1779969764, now seen corresponding path program 1 times [2024-11-20 22:03:12,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:03:12,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141055597] [2024-11-20 22:03:12,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:03:12,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:03:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:03:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:03:13,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:03:13,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141055597] [2024-11-20 22:03:13,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141055597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:03:13,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854529740] [2024-11-20 22:03:13,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:03:13,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:03:13,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:03:13,326 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) [2024-11-20 22:03:13,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 22:03:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:03:13,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-20 22:03:13,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:03:13,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 22:03:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:03:13,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:03:13,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-20 22:03:13,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-20 22:03:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:03:13,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854529740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:03:13,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:03:13,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2024-11-20 22:03:13,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283324620] [2024-11-20 22:03:13,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:03:13,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 22:03:13,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:03:13,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 22:03:13,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-20 22:03:13,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-20 22:03:13,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 89 transitions, 266 flow. Second operand has 13 states, 13 states have (on average 44.38461538461539) internal successors, (577), 13 states have internal predecessors, (577), 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) [2024-11-20 22:03:13,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:03:13,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-20 22:03:13,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:03:18,151 INFO L124 PetriNetUnfolderBase]: 38713/59778 cut-off events. [2024-11-20 22:03:18,151 INFO L125 PetriNetUnfolderBase]: For 3262/3294 co-relation queries the response was YES. [2024-11-20 22:03:18,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112236 conditions, 59778 events. 38713/59778 cut-off events. For 3262/3294 co-relation queries the response was YES. Maximal size of possible extension queue 2470. Compared 506180 event pairs, 12350 based on Foata normal form. 32/55262 useless extension candidates. Maximal degree in co-relation 112209. Up to 22291 conditions per place. [2024-11-20 22:03:18,605 INFO L140 encePairwiseOnDemand]: 73/84 looper letters, 106 selfloop transitions, 14 changer transitions 0/158 dead transitions. [2024-11-20 22:03:18,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 158 transitions, 674 flow [2024-11-20 22:03:18,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 22:03:18,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 22:03:18,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 486 transitions. [2024-11-20 22:03:18,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-20 22:03:18,607 INFO L175 Difference]: Start difference. First operand has 97 places, 89 transitions, 266 flow. Second operand 9 states and 486 transitions. [2024-11-20 22:03:18,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 158 transitions, 674 flow [2024-11-20 22:03:18,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 158 transitions, 670 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 22:03:18,620 INFO L231 Difference]: Finished difference. Result has 106 places, 94 transitions, 326 flow [2024-11-20 22:03:18,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=326, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2024-11-20 22:03:18,621 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 22 predicate places. [2024-11-20 22:03:18,621 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 326 flow [2024-11-20 22:03:18,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 44.38461538461539) internal successors, (577), 13 states have internal predecessors, (577), 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) [2024-11-20 22:03:18,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:03:18,622 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2024-11-20 22:03:18,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 22:03:18,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:03:18,827 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-20 22:03:18,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:03:18,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1681187984, now seen corresponding path program 2 times [2024-11-20 22:03:18,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:03:18,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493585868] [2024-11-20 22:03:18,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:03:18,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:03:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:03:18,965 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:03:18,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:03:18,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493585868] [2024-11-20 22:03:18,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493585868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:03:18,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104970914] [2024-11-20 22:03:18,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:03:18,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:03:18,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:03:18,971 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) [2024-11-20 22:03:18,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 22:03:19,041 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 22:03:19,042 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:03:19,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 22:03:19,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:03:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 22:03:19,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:03:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 22:03:19,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104970914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:03:19,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:03:19,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2024-11-20 22:03:19,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208856186] [2024-11-20 22:03:19,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:03:19,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 22:03:19,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:03:19,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 22:03:19,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-20 22:03:19,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-20 22:03:19,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 326 flow. Second operand has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 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) [2024-11-20 22:03:19,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:03:19,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-20 22:03:19,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:03:24,108 INFO L124 PetriNetUnfolderBase]: 39136/62152 cut-off events. [2024-11-20 22:03:24,108 INFO L125 PetriNetUnfolderBase]: For 19061/19093 co-relation queries the response was YES. [2024-11-20 22:03:24,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128334 conditions, 62152 events. 39136/62152 cut-off events. For 19061/19093 co-relation queries the response was YES. Maximal size of possible extension queue 2615. Compared 544272 event pairs, 28059 based on Foata normal form. 34/57610 useless extension candidates. Maximal degree in co-relation 128285. Up to 48173 conditions per place. [2024-11-20 22:03:24,592 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 41 selfloop transitions, 19 changer transitions 0/96 dead transitions. [2024-11-20 22:03:24,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 96 transitions, 455 flow [2024-11-20 22:03:24,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 22:03:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-20 22:03:24,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 680 transitions. [2024-11-20 22:03:24,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-11-20 22:03:24,594 INFO L175 Difference]: Start difference. First operand has 106 places, 94 transitions, 326 flow. Second operand 16 states and 680 transitions. [2024-11-20 22:03:24,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 96 transitions, 455 flow [2024-11-20 22:03:24,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 96 transitions, 432 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-11-20 22:03:24,631 INFO L231 Difference]: Finished difference. Result has 112 places, 96 transitions, 350 flow [2024-11-20 22:03:24,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=350, PETRI_PLACES=112, PETRI_TRANSITIONS=96} [2024-11-20 22:03:24,632 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 28 predicate places. [2024-11-20 22:03:24,632 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 96 transitions, 350 flow [2024-11-20 22:03:24,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 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) [2024-11-20 22:03:24,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:03:24,633 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:03:24,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 22:03:24,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:03:24,834 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-20 22:03:24,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:03:24,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1153979142, now seen corresponding path program 1 times [2024-11-20 22:03:24,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:03:24,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683350459] [2024-11-20 22:03:24,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:03:24,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:03:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:03:24,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:03:24,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:03:24,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683350459] [2024-11-20 22:03:24,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683350459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:03:24,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:03:24,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:03:24,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197889125] [2024-11-20 22:03:24,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:03:24,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:03:24,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:03:24,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:03:24,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:03:24,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-20 22:03:24,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 96 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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) [2024-11-20 22:03:24,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:03:24,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-20 22:03:24,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:03:29,528 INFO L124 PetriNetUnfolderBase]: 45353/68659 cut-off events. [2024-11-20 22:03:29,529 INFO L125 PetriNetUnfolderBase]: For 20290/20322 co-relation queries the response was YES. [2024-11-20 22:03:29,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143084 conditions, 68659 events. 45353/68659 cut-off events. For 20290/20322 co-relation queries the response was YES. Maximal size of possible extension queue 2779. Compared 573762 event pairs, 19307 based on Foata normal form. 1622/66680 useless extension candidates. Maximal degree in co-relation 142982. Up to 37247 conditions per place. [2024-11-20 22:03:30,032 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 100 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2024-11-20 22:03:30,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 139 transitions, 664 flow [2024-11-20 22:03:30,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:03:30,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:03:30,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2024-11-20 22:03:30,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7410714285714286 [2024-11-20 22:03:30,034 INFO L175 Difference]: Start difference. First operand has 112 places, 96 transitions, 350 flow. Second operand 4 states and 249 transitions. [2024-11-20 22:03:30,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 139 transitions, 664 flow [2024-11-20 22:03:30,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 139 transitions, 599 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-11-20 22:03:30,069 INFO L231 Difference]: Finished difference. Result has 104 places, 97 transitions, 306 flow [2024-11-20 22:03:30,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=104, PETRI_TRANSITIONS=97} [2024-11-20 22:03:30,071 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2024-11-20 22:03:30,071 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 97 transitions, 306 flow [2024-11-20 22:03:30,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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) [2024-11-20 22:03:30,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:03:30,071 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:03:30,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 22:03:30,071 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-20 22:03:30,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:03:30,072 INFO L85 PathProgramCache]: Analyzing trace with hash -572865167, now seen corresponding path program 1 times [2024-11-20 22:03:30,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:03:30,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127582658] [2024-11-20 22:03:30,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:03:30,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:03:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:03:30,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:03:30,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:03:30,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127582658] [2024-11-20 22:03:30,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127582658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:03:30,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:03:30,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:03:30,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24348814] [2024-11-20 22:03:30,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:03:30,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:03:30,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:03:30,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:03:30,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:03:30,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-20 22:03:30,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 97 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2024-11-20 22:03:30,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:03:30,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-20 22:03:30,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand