./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-simple-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 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-simple-queue.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 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:05:33,481 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:05:33,558 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:05:33,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:05:33,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:05:33,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:05:33,593 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:05:33,593 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:05:33,594 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:05:33,595 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:05:33,595 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:05:33,595 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:05:33,597 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:05:33,597 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:05:33,598 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:05:33,599 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:05:33,599 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:05:33,599 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:05:33,600 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:05:33,600 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:05:33,600 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:05:33,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:05:33,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:05:33,602 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:05:33,602 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:05:33,602 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:05:33,603 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:05:33,603 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:05:33,603 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:05:33,603 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:05:33,604 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:05:33,604 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:05:33,604 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:05:33,605 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:05:33,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:05:33,605 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:05:33,606 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:05:33,606 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:05:33,606 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:05:33,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:05:33,607 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:05:33,607 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:05:33,607 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:05:33,608 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:05:33,608 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 [2024-10-15 00:05:33,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:05:33,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:05:33,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:05:33,963 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:05:33,963 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:05:33,964 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2024-10-15 00:05:35,465 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:05:35,742 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:05:35,744 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2024-10-15 00:05:35,755 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb5dc3334/e4ff1e88f9114034b6fd875e0a89797d/FLAG97b09f669 [2024-10-15 00:05:35,773 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb5dc3334/e4ff1e88f9114034b6fd875e0a89797d [2024-10-15 00:05:35,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:05:35,778 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:05:35,780 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:05:35,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:05:35,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:05:35,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:05:35" (1/1) ... [2024-10-15 00:05:35,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68880afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:35, skipping insertion in model container [2024-10-15 00:05:35,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:05:35" (1/1) ... [2024-10-15 00:05:35,816 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:05:36,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:05:36,033 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:05:36,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:05:36,094 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:05:36,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:36 WrapperNode [2024-10-15 00:05:36,095 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:05:36,096 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:05:36,097 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:05:36,097 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:05:36,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:36" (1/1) ... [2024-10-15 00:05:36,116 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:36" (1/1) ... [2024-10-15 00:05:36,146 INFO L138 Inliner]: procedures = 23, calls = 24, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 133 [2024-10-15 00:05:36,147 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:05:36,149 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:05:36,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:05:36,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:05:36,164 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:36" (1/1) ... [2024-10-15 00:05:36,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:36" (1/1) ... [2024-10-15 00:05:36,167 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:36" (1/1) ... [2024-10-15 00:05:36,185 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-15 00:05:36,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:36" (1/1) ... [2024-10-15 00:05:36,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:36" (1/1) ... [2024-10-15 00:05:36,191 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:36" (1/1) ... [2024-10-15 00:05:36,199 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:36" (1/1) ... [2024-10-15 00:05:36,200 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:36" (1/1) ... [2024-10-15 00:05:36,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:36" (1/1) ... [2024-10-15 00:05:36,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:05:36,208 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:05:36,208 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:05:36,208 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:05:36,209 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:36" (1/1) ... [2024-10-15 00:05:36,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:05:36,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:05:36,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-15 00:05:36,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-15 00:05:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:05:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:05:36,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:05:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:05:36,285 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:05:36,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:05:36,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 00:05:36,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 00:05:36,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 00:05:36,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-15 00:05:36,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-15 00:05:36,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-15 00:05:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:05:36,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:05:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 00:05:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 00:05:36,288 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:05:36,383 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:05:36,386 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:05:36,628 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:05:36,630 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:05:36,840 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:05:36,842 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-15 00:05:36,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:05:36 BoogieIcfgContainer [2024-10-15 00:05:36,842 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:05:36,847 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:05:36,847 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:05:36,850 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:05:36,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:05:35" (1/3) ... [2024-10-15 00:05:36,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5341fe7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:05:36, skipping insertion in model container [2024-10-15 00:05:36,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:05:36" (2/3) ... [2024-10-15 00:05:36,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5341fe7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:05:36, skipping insertion in model container [2024-10-15 00:05:36,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:05:36" (3/3) ... [2024-10-15 00:05:36,854 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2024-10-15 00:05:36,869 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:05:36,869 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-15 00:05:36,869 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:05:36,918 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-15 00:05:36,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 82 flow [2024-10-15 00:05:36,984 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2024-10-15 00:05:36,984 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-15 00:05:36,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 32 events. 5/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-10-15 00:05:36,988 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 34 transitions, 82 flow [2024-10-15 00:05:36,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 30 transitions, 69 flow [2024-10-15 00:05:36,999 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:05:37,005 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;@5fe3159d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:05:37,006 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-10-15 00:05:37,009 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:05:37,009 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-15 00:05:37,009 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-15 00:05:37,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:37,010 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-15 00:05:37,011 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-15 00:05:37,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:37,019 INFO L85 PathProgramCache]: Analyzing trace with hash 410261, now seen corresponding path program 1 times [2024-10-15 00:05:37,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:37,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962750225] [2024-10-15 00:05:37,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:37,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:37,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:37,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962750225] [2024-10-15 00:05:37,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962750225] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:37,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:05:37,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:05:37,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661602798] [2024-10-15 00:05:37,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:37,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:05:37,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:37,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:05:37,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:05:37,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2024-10-15 00:05:37,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:37,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:37,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2024-10-15 00:05:37,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:37,630 INFO L124 PetriNetUnfolderBase]: 165/293 cut-off events. [2024-10-15 00:05:37,631 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-15 00:05:37,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 293 events. 165/293 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1086 event pairs, 132 based on Foata normal form. 1/226 useless extension candidates. Maximal degree in co-relation 545. Up to 287 conditions per place. [2024-10-15 00:05:37,636 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 22 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2024-10-15 00:05:37,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 119 flow [2024-10-15 00:05:37,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:05:37,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:05:37,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2024-10-15 00:05:37,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-10-15 00:05:37,653 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 69 flow. Second operand 4 states and 52 transitions. [2024-10-15 00:05:37,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 119 flow [2024-10-15 00:05:37,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-15 00:05:37,658 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 85 flow [2024-10-15 00:05:37,660 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=85, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-10-15 00:05:37,666 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2024-10-15 00:05:37,666 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 85 flow [2024-10-15 00:05:37,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:37,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:37,668 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-15 00:05:37,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:05:37,668 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-15 00:05:37,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:37,669 INFO L85 PathProgramCache]: Analyzing trace with hash -662433084, now seen corresponding path program 1 times [2024-10-15 00:05:37,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:37,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353304047] [2024-10-15 00:05:37,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:37,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:37,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:37,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353304047] [2024-10-15 00:05:37,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353304047] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:05:37,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787432000] [2024-10-15 00:05:37,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:37,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:37,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:05:37,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:05:37,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:05:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:37,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:05:37,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:05:37,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:37,973 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:05:37,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787432000] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:37,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:05:37,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-15 00:05:37,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942826961] [2024-10-15 00:05:37,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:37,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:05:37,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:37,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:05:37,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:05:37,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2024-10-15 00:05:37,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 85 flow. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:37,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:37,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2024-10-15 00:05:37,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:38,118 INFO L124 PetriNetUnfolderBase]: 165/292 cut-off events. [2024-10-15 00:05:38,119 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-15 00:05:38,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 292 events. 165/292 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1077 event pairs, 132 based on Foata normal form. 1/226 useless extension candidates. Maximal degree in co-relation 583. Up to 282 conditions per place. [2024-10-15 00:05:38,122 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 18 selfloop transitions, 7 changer transitions 0/28 dead transitions. [2024-10-15 00:05:38,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 131 flow [2024-10-15 00:05:38,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:05:38,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:05:38,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 56 transitions. [2024-10-15 00:05:38,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27450980392156865 [2024-10-15 00:05:38,127 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 85 flow. Second operand 6 states and 56 transitions. [2024-10-15 00:05:38,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 131 flow [2024-10-15 00:05:38,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:05:38,129 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 92 flow [2024-10-15 00:05:38,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-10-15 00:05:38,131 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2024-10-15 00:05:38,131 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 92 flow [2024-10-15 00:05:38,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:38,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:38,132 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:05:38,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-15 00:05:38,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:38,333 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-15 00:05:38,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:38,334 INFO L85 PathProgramCache]: Analyzing trace with hash 993006643, now seen corresponding path program 1 times [2024-10-15 00:05:38,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:38,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065171533] [2024-10-15 00:05:38,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:38,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:38,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:38,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:38,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065171533] [2024-10-15 00:05:38,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065171533] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:38,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:05:38,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:05:38,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647607614] [2024-10-15 00:05:38,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:38,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:05:38,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:38,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:05:38,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:05:38,448 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-10-15 00:05:38,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:38,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:38,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-10-15 00:05:38,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:38,623 INFO L124 PetriNetUnfolderBase]: 232/428 cut-off events. [2024-10-15 00:05:38,624 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-15 00:05:38,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 894 conditions, 428 events. 232/428 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1745 event pairs, 200 based on Foata normal form. 23/362 useless extension candidates. Maximal degree in co-relation 585. Up to 284 conditions per place. [2024-10-15 00:05:38,629 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 21 selfloop transitions, 2 changer transitions 14/41 dead transitions. [2024-10-15 00:05:38,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 196 flow [2024-10-15 00:05:38,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:05:38,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:05:38,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-10-15 00:05:38,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5073529411764706 [2024-10-15 00:05:38,634 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 92 flow. Second operand 4 states and 69 transitions. [2024-10-15 00:05:38,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 196 flow [2024-10-15 00:05:38,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 174 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-15 00:05:38,639 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 80 flow [2024-10-15 00:05:38,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-10-15 00:05:38,641 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2024-10-15 00:05:38,641 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 80 flow [2024-10-15 00:05:38,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:38,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:38,642 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-15 00:05:38,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-15 00:05:38,642 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-15 00:05:38,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:38,643 INFO L85 PathProgramCache]: Analyzing trace with hash 939411262, now seen corresponding path program 1 times [2024-10-15 00:05:38,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:38,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433099133] [2024-10-15 00:05:38,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:38,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:38,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:38,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433099133] [2024-10-15 00:05:38,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433099133] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:05:38,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389173557] [2024-10-15 00:05:38,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:38,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:38,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:05:38,807 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:05:38,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:05:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:38,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:05:38,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:05:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:38,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:05:38,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:38,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389173557] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:05:38,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:05:38,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-15 00:05:38,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550048548] [2024-10-15 00:05:38,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:05:38,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:05:38,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:38,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:05:38,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:05:38,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2024-10-15 00:05:38,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 80 flow. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:38,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:38,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2024-10-15 00:05:38,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:39,110 INFO L124 PetriNetUnfolderBase]: 167/303 cut-off events. [2024-10-15 00:05:39,111 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-10-15 00:05:39,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 303 events. 167/303 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1124 event pairs, 132 based on Foata normal form. 3/237 useless extension candidates. Maximal degree in co-relation 677. Up to 288 conditions per place. [2024-10-15 00:05:39,114 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 21 selfloop transitions, 12 changer transitions 0/36 dead transitions. [2024-10-15 00:05:39,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 176 flow [2024-10-15 00:05:39,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:05:39,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:05:39,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 86 transitions. [2024-10-15 00:05:39,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2529411764705882 [2024-10-15 00:05:39,116 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 80 flow. Second operand 10 states and 86 transitions. [2024-10-15 00:05:39,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 176 flow [2024-10-15 00:05:39,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:05:39,121 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 148 flow [2024-10-15 00:05:39,121 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=148, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-10-15 00:05:39,122 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2024-10-15 00:05:39,123 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 148 flow [2024-10-15 00:05:39,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:39,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:39,124 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:05:39,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-15 00:05:39,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-15 00:05:39,325 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-15 00:05:39,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:39,326 INFO L85 PathProgramCache]: Analyzing trace with hash 47985890, now seen corresponding path program 1 times [2024-10-15 00:05:39,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:39,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111145650] [2024-10-15 00:05:39,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:39,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:39,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:39,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:39,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111145650] [2024-10-15 00:05:39,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111145650] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:05:39,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705780905] [2024-10-15 00:05:39,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:39,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:39,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:05:39,499 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:05:39,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:05:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:39,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:05:39,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:05:39,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:05:39,604 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:05:39,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705780905] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:05:39,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:05:39,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-15 00:05:39,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322058857] [2024-10-15 00:05:39,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:05:39,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:05:39,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:39,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:05:39,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-15 00:05:39,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-10-15 00:05:39,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:39,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:39,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-10-15 00:05:39,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:39,661 INFO L124 PetriNetUnfolderBase]: 125/232 cut-off events. [2024-10-15 00:05:39,661 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-10-15 00:05:39,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 232 events. 125/232 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 796 event pairs, 94 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 500. Up to 223 conditions per place. [2024-10-15 00:05:39,662 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 10 selfloop transitions, 1 changer transitions 21/34 dead transitions. [2024-10-15 00:05:39,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 200 flow [2024-10-15 00:05:39,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:05:39,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:05:39,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-10-15 00:05:39,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-10-15 00:05:39,665 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 148 flow. Second operand 3 states and 42 transitions. [2024-10-15 00:05:39,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 200 flow [2024-10-15 00:05:39,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 190 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-15 00:05:39,669 INFO L231 Difference]: Finished difference. Result has 41 places, 13 transitions, 74 flow [2024-10-15 00:05:39,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=41, PETRI_TRANSITIONS=13} [2024-10-15 00:05:39,670 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2024-10-15 00:05:39,672 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 13 transitions, 74 flow [2024-10-15 00:05:39,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:39,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:39,673 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-15 00:05:39,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 00:05:39,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:39,874 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-10-15 00:05:39,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:39,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1590720077, now seen corresponding path program 2 times [2024-10-15 00:05:39,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:39,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100565457] [2024-10-15 00:05:39,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:39,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:40,091 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:05:40,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:40,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100565457] [2024-10-15 00:05:40,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100565457] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:05:40,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423429763] [2024-10-15 00:05:40,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:05:40,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:40,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:05:40,097 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:05:40,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:05:40,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:05:40,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:05:40,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:05:40,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:05:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:05:40,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:05:40,267 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:05:40,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423429763] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:05:40,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:05:40,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-15 00:05:40,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948480252] [2024-10-15 00:05:40,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:05:40,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 00:05:40,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:40,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 00:05:40,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-15 00:05:40,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2024-10-15 00:05:40,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 13 transitions, 74 flow. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:40,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:40,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2024-10-15 00:05:40,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:40,450 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-10-15 00:05:40,451 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-10-15 00:05:40,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 19 events. 1/19 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/21 useless extension candidates. Maximal degree in co-relation 56. Up to 6 conditions per place. [2024-10-15 00:05:40,452 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2024-10-15 00:05:40,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 14 transitions, 102 flow [2024-10-15 00:05:40,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:05:40,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:05:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 85 transitions. [2024-10-15 00:05:40,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.17857142857142858 [2024-10-15 00:05:40,456 INFO L175 Difference]: Start difference. First operand has 41 places, 13 transitions, 74 flow. Second operand 14 states and 85 transitions. [2024-10-15 00:05:40,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 14 transitions, 102 flow [2024-10-15 00:05:40,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 14 transitions, 89 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-15 00:05:40,458 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2024-10-15 00:05:40,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2024-10-15 00:05:40,459 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2024-10-15 00:05:40,460 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2024-10-15 00:05:40,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:40,463 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2024-10-15 00:05:40,464 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2024-10-15 00:05:40,464 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2024-10-15 00:05:40,464 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2024-10-15 00:05:40,465 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2024-10-15 00:05:40,465 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2024-10-15 00:05:40,465 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2024-10-15 00:05:40,465 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2024-10-15 00:05:40,466 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2024-10-15 00:05:40,466 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2024-10-15 00:05:40,466 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2024-10-15 00:05:40,466 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2024-10-15 00:05:40,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 00:05:40,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:40,671 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-10-15 00:05:40,677 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-15 00:05:40,677 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 00:05:40,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 12:05:40 BasicIcfg [2024-10-15 00:05:40,683 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-15 00:05:40,683 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 00:05:40,684 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 00:05:40,685 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 00:05:40,686 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:05:36" (3/4) ... [2024-10-15 00:05:40,687 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-15 00:05:40,690 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-15 00:05:40,690 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-15 00:05:40,696 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 79 nodes and edges [2024-10-15 00:05:40,699 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-10-15 00:05:40,699 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-10-15 00:05:40,699 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-15 00:05:40,793 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-15 00:05:40,794 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-15 00:05:40,794 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 00:05:40,795 INFO L158 Benchmark]: Toolchain (without parser) took 5016.56ms. Allocated memory was 178.3MB in the beginning and 228.6MB in the end (delta: 50.3MB). Free memory was 147.4MB in the beginning and 149.3MB in the end (delta: -1.9MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2024-10-15 00:05:40,798 INFO L158 Benchmark]: CDTParser took 1.21ms. Allocated memory is still 117.4MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 00:05:40,798 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.76ms. Allocated memory is still 178.3MB. Free memory was 147.4MB in the beginning and 134.9MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-15 00:05:40,798 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.26ms. Allocated memory is still 178.3MB. Free memory was 134.9MB in the beginning and 132.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:05:40,799 INFO L158 Benchmark]: Boogie Preprocessor took 54.16ms. Allocated memory is still 178.3MB. Free memory was 132.8MB in the beginning and 130.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:05:40,799 INFO L158 Benchmark]: RCFGBuilder took 634.71ms. Allocated memory is still 178.3MB. Free memory was 130.7MB in the beginning and 91.9MB in the end (delta: 38.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-10-15 00:05:40,799 INFO L158 Benchmark]: TraceAbstraction took 3836.23ms. Allocated memory was 178.3MB in the beginning and 228.6MB in the end (delta: 50.3MB). Free memory was 91.9MB in the beginning and 154.4MB in the end (delta: -62.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 00:05:40,799 INFO L158 Benchmark]: Witness Printer took 110.46ms. Allocated memory is still 228.6MB. Free memory was 154.4MB in the beginning and 149.3MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-15 00:05:40,801 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.21ms. Allocated memory is still 117.4MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.76ms. Allocated memory is still 178.3MB. Free memory was 147.4MB in the beginning and 134.9MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.26ms. Allocated memory is still 178.3MB. Free memory was 134.9MB in the beginning and 132.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.16ms. Allocated memory is still 178.3MB. Free memory was 132.8MB in the beginning and 130.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 634.71ms. Allocated memory is still 178.3MB. Free memory was 130.7MB in the beginning and 91.9MB in the end (delta: 38.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3836.23ms. Allocated memory was 178.3MB in the beginning and 228.6MB in the end (delta: 50.3MB). Free memory was 91.9MB in the beginning and 154.4MB in the end (delta: -62.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 110.46ms. Allocated memory is still 228.6MB. Free memory was 154.4MB in the beginning and 149.3MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 48 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 85 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 414 IncrementalHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 8 mSDtfsCounter, 414 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=4, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 88 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 317 SizeOfPredicates, 9 NumberOfNonLiveVariables, 302 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 47/105 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-15 00:05:40,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE