./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:09:13,498 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:09:13,566 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:09:13,571 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:09:13,573 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:09:13,606 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:09:13,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:09:13,607 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:09:13,607 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:09:13,608 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:09:13,609 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:09:13,609 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:09:13,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:09:13,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:09:13,612 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:09:13,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:09:13,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:09:13,613 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:09:13,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:09:13,616 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:09:13,617 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:09:13,617 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:09:13,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:09:13,618 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:09:13,618 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:09:13,618 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:09:13,619 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:09:13,619 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:09:13,619 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:09:13,619 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:09:13,620 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:09:13,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:09:13,620 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:09:13,620 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:09:13,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:09:13,621 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:09:13,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:09:13,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:09:13,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:09:13,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:09:13,622 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:09:13,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:09:13,623 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:09:13,623 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:09:13,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 [2024-11-19 14:09:13,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:09:13,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:09:13,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:09:13,894 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:09:13,895 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:09:13,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2024-11-19 14:09:15,282 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:09:15,492 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:09:15,495 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2024-11-19 14:09:15,508 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fb1939ac/31d499e6c9d748c482cee7a9f01635a0/FLAG7f08539df [2024-11-19 14:09:15,859 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fb1939ac/31d499e6c9d748c482cee7a9f01635a0 [2024-11-19 14:09:15,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:09:15,862 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:09:15,863 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:09:15,863 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:09:15,868 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:09:15,869 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:09:15" (1/1) ... [2024-11-19 14:09:15,870 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155fe220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:15, skipping insertion in model container [2024-11-19 14:09:15,870 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:09:15" (1/1) ... [2024-11-19 14:09:15,894 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:09:16,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:09:16,101 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:09:16,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:09:16,138 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:09:16,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:16 WrapperNode [2024-11-19 14:09:16,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:09:16,140 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:09:16,140 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:09:16,140 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:09:16,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:16" (1/1) ... [2024-11-19 14:09:16,154 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:16" (1/1) ... [2024-11-19 14:09:16,182 INFO L138 Inliner]: procedures = 23, calls = 24, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 133 [2024-11-19 14:09:16,183 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:09:16,185 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:09:16,185 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:09:16,185 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:09:16,195 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:16" (1/1) ... [2024-11-19 14:09:16,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:16" (1/1) ... [2024-11-19 14:09:16,198 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:16" (1/1) ... [2024-11-19 14:09:16,214 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]. [2024-11-19 14:09:16,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:16" (1/1) ... [2024-11-19 14:09:16,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:16" (1/1) ... [2024-11-19 14:09:16,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:16" (1/1) ... [2024-11-19 14:09:16,230 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:16" (1/1) ... [2024-11-19 14:09:16,232 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:16" (1/1) ... [2024-11-19 14:09:16,233 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:16" (1/1) ... [2024-11-19 14:09:16,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:09:16,236 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:09:16,236 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:09:16,236 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:09:16,237 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:16" (1/1) ... [2024-11-19 14:09:16,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:09:16,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:16,280 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) [2024-11-19 14:09:16,283 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 [2024-11-19 14:09:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:09:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:09:16,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:09:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:09:16,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:09:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:09:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:09:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:09:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:09:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 14:09:16,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 14:09:16,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:09:16,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:09:16,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:09:16,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:09:16,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:09:16,337 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:09:16,450 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:09:16,453 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:09:16,711 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:09:16,711 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:09:16,927 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:09:16,928 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 14:09:16,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:09:16 BoogieIcfgContainer [2024-11-19 14:09:16,928 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:09:16,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:09:16,932 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:09:16,935 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:09:16,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:09:15" (1/3) ... [2024-11-19 14:09:16,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55212611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:09:16, skipping insertion in model container [2024-11-19 14:09:16,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:09:16" (2/3) ... [2024-11-19 14:09:16,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55212611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:09:16, skipping insertion in model container [2024-11-19 14:09:16,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:09:16" (3/3) ... [2024-11-19 14:09:16,940 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2024-11-19 14:09:16,957 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:09:16,958 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-19 14:09:16,958 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:09:17,020 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 14:09:17,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 82 flow [2024-11-19 14:09:17,079 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2024-11-19 14:09:17,079 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 14:09:17,082 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. [2024-11-19 14:09:17,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 34 transitions, 82 flow [2024-11-19 14:09:17,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 30 transitions, 69 flow [2024-11-19 14:09:17,099 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:09:17,105 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;@466155aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:09:17,105 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-19 14:09:17,109 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:09:17,109 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:09:17,109 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:09:17,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:17,110 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:09:17,111 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-19 14:09:17,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:17,116 INFO L85 PathProgramCache]: Analyzing trace with hash 410261, now seen corresponding path program 1 times [2024-11-19 14:09:17,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:17,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766342093] [2024-11-19 14:09:17,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:17,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:17,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:17,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766342093] [2024-11-19 14:09:17,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766342093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:17,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:17,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:09:17,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63148046] [2024-11-19 14:09:17,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:17,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:17,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:17,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:17,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:17,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2024-11-19 14:09:17,473 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) [2024-11-19 14:09:17,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:17,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2024-11-19 14:09:17,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:17,722 INFO L124 PetriNetUnfolderBase]: 165/293 cut-off events. [2024-11-19 14:09:17,722 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-19 14:09:17,724 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. [2024-11-19 14:09:17,730 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 22 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2024-11-19 14:09:17,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 119 flow [2024-11-19 14:09:17,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:17,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:17,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2024-11-19 14:09:17,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-11-19 14:09:17,747 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 69 flow. Second operand 4 states and 52 transitions. [2024-11-19 14:09:17,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 119 flow [2024-11-19 14:09:17,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:09:17,753 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 85 flow [2024-11-19 14:09:17,754 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} [2024-11-19 14:09:17,757 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2024-11-19 14:09:17,757 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 85 flow [2024-11-19 14:09:17,758 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) [2024-11-19 14:09:17,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:17,758 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:09:17,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:09:17,759 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-19 14:09:17,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:17,760 INFO L85 PathProgramCache]: Analyzing trace with hash -662433084, now seen corresponding path program 1 times [2024-11-19 14:09:17,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:17,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028861424] [2024-11-19 14:09:17,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:17,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:17,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:17,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028861424] [2024-11-19 14:09:17,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028861424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:17,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332459631] [2024-11-19 14:09:17,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:17,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:17,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:17,923 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) [2024-11-19 14:09:17,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:09:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:17,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:09:17,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:18,054 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:09:18,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332459631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:18,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:09:18,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:09:18,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063107568] [2024-11-19 14:09:18,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:18,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:09:18,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:18,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:09:18,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:09:18,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2024-11-19 14:09:18,070 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) [2024-11-19 14:09:18,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:18,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2024-11-19 14:09:18,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:18,227 INFO L124 PetriNetUnfolderBase]: 165/292 cut-off events. [2024-11-19 14:09:18,228 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 14:09:18,229 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. [2024-11-19 14:09:18,230 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 18 selfloop transitions, 7 changer transitions 0/28 dead transitions. [2024-11-19 14:09:18,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 131 flow [2024-11-19 14:09:18,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:09:18,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:09:18,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 56 transitions. [2024-11-19 14:09:18,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27450980392156865 [2024-11-19 14:09:18,235 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 85 flow. Second operand 6 states and 56 transitions. [2024-11-19 14:09:18,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 131 flow [2024-11-19 14:09:18,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:09:18,239 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 92 flow [2024-11-19 14:09:18,240 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} [2024-11-19 14:09:18,241 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2024-11-19 14:09:18,242 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 92 flow [2024-11-19 14:09:18,242 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) [2024-11-19 14:09:18,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:18,242 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:18,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:09:18,443 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 [2024-11-19 14:09:18,443 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-19 14:09:18,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:18,444 INFO L85 PathProgramCache]: Analyzing trace with hash 993006643, now seen corresponding path program 1 times [2024-11-19 14:09:18,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:18,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225043793] [2024-11-19 14:09:18,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:18,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:18,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:18,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:18,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225043793] [2024-11-19 14:09:18,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225043793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:18,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:18,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:09:18,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943218073] [2024-11-19 14:09:18,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:18,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:18,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:18,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:18,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:18,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-11-19 14:09:18,552 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) [2024-11-19 14:09:18,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:18,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-11-19 14:09:18,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:18,666 INFO L124 PetriNetUnfolderBase]: 232/428 cut-off events. [2024-11-19 14:09:18,667 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-19 14:09:18,668 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. [2024-11-19 14:09:18,670 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 21 selfloop transitions, 2 changer transitions 14/41 dead transitions. [2024-11-19 14:09:18,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 196 flow [2024-11-19 14:09:18,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:18,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:18,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-11-19 14:09:18,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5073529411764706 [2024-11-19 14:09:18,672 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 92 flow. Second operand 4 states and 69 transitions. [2024-11-19 14:09:18,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 196 flow [2024-11-19 14:09:18,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 174 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-19 14:09:18,673 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 80 flow [2024-11-19 14:09:18,673 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} [2024-11-19 14:09:18,674 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2024-11-19 14:09:18,674 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 80 flow [2024-11-19 14:09:18,675 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) [2024-11-19 14:09:18,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:18,675 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:09:18,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 14:09:18,675 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-19 14:09:18,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:18,676 INFO L85 PathProgramCache]: Analyzing trace with hash 939411262, now seen corresponding path program 1 times [2024-11-19 14:09:18,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:18,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454379026] [2024-11-19 14:09:18,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:18,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:18,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:18,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454379026] [2024-11-19 14:09:18,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454379026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:18,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040003200] [2024-11-19 14:09:18,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:18,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:18,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:18,769 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) [2024-11-19 14:09:18,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:09:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:18,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:09:18,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:18,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:18,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:18,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040003200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:18,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:18,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:09:18,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596450903] [2024-11-19 14:09:18,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:18,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:09:18,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:18,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:09:18,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:09:18,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2024-11-19 14:09:18,932 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) [2024-11-19 14:09:18,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:18,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2024-11-19 14:09:18,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:19,085 INFO L124 PetriNetUnfolderBase]: 167/303 cut-off events. [2024-11-19 14:09:19,085 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-19 14:09:19,086 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. [2024-11-19 14:09:19,088 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 21 selfloop transitions, 12 changer transitions 0/36 dead transitions. [2024-11-19 14:09:19,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 176 flow [2024-11-19 14:09:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:09:19,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:09:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 86 transitions. [2024-11-19 14:09:19,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2529411764705882 [2024-11-19 14:09:19,090 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 80 flow. Second operand 10 states and 86 transitions. [2024-11-19 14:09:19,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 176 flow [2024-11-19 14:09:19,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:09:19,091 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 148 flow [2024-11-19 14:09:19,092 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} [2024-11-19 14:09:19,092 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2024-11-19 14:09:19,093 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 148 flow [2024-11-19 14:09:19,093 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) [2024-11-19 14:09:19,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:19,093 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:19,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:09:19,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-19 14:09:19,298 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-19 14:09:19,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:19,298 INFO L85 PathProgramCache]: Analyzing trace with hash 47985890, now seen corresponding path program 1 times [2024-11-19 14:09:19,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:19,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467369207] [2024-11-19 14:09:19,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:19,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:19,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:19,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467369207] [2024-11-19 14:09:19,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467369207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:19,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428142671] [2024-11-19 14:09:19,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:19,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:19,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:19,430 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) [2024-11-19 14:09:19,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:09:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:19,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:09:19,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:19,524 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:09:19,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428142671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:19,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:09:19,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-19 14:09:19,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066674872] [2024-11-19 14:09:19,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:19,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:09:19,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:19,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:09:19,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 14:09:19,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-11-19 14:09:19,526 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) [2024-11-19 14:09:19,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:19,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-11-19 14:09:19,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:19,575 INFO L124 PetriNetUnfolderBase]: 125/232 cut-off events. [2024-11-19 14:09:19,576 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-19 14:09:19,576 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. [2024-11-19 14:09:19,577 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 10 selfloop transitions, 1 changer transitions 21/34 dead transitions. [2024-11-19 14:09:19,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 200 flow [2024-11-19 14:09:19,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:09:19,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:09:19,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-11-19 14:09:19,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-11-19 14:09:19,579 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 148 flow. Second operand 3 states and 42 transitions. [2024-11-19 14:09:19,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 200 flow [2024-11-19 14:09:19,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 190 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 14:09:19,581 INFO L231 Difference]: Finished difference. Result has 41 places, 13 transitions, 74 flow [2024-11-19 14:09:19,582 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} [2024-11-19 14:09:19,582 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2024-11-19 14:09:19,582 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 13 transitions, 74 flow [2024-11-19 14:09:19,583 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) [2024-11-19 14:09:19,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:19,583 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-19 14:09:19,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:09:19,783 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 [2024-11-19 14:09:19,784 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-19 14:09:19,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:19,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1590720077, now seen corresponding path program 2 times [2024-11-19 14:09:19,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:19,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014722935] [2024-11-19 14:09:19,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:19,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:19,797 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:09:19,797 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:09:19,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:19,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014722935] [2024-11-19 14:09:19,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014722935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:19,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981124901] [2024-11-19 14:09:19,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:19,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:19,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:19,845 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) [2024-11-19 14:09:19,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:09:19,910 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:09:19,911 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:19,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:09:19,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:19,951 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:09:19,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:19,984 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:09:19,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981124901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:19,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:19,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-19 14:09:19,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091143837] [2024-11-19 14:09:19,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:19,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:19,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:19,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:19,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:19,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 34 [2024-11-19 14:09:19,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 13 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-11-19 14:09:19,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:19,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 34 [2024-11-19 14:09:19,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:20,007 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-19 14:09:20,007 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-19 14:09:20,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 16 events. 1/16 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 47. Up to 6 conditions per place. [2024-11-19 14:09:20,007 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2024-11-19 14:09:20,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 12 transitions, 86 flow [2024-11-19 14:09:20,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:20,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:20,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2024-11-19 14:09:20,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.17647058823529413 [2024-11-19 14:09:20,009 INFO L175 Difference]: Start difference. First operand has 41 places, 13 transitions, 74 flow. Second operand 4 states and 24 transitions. [2024-11-19 14:09:20,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 12 transitions, 86 flow [2024-11-19 14:09:20,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 75 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-19 14:09:20,010 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2024-11-19 14:09:20,010 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=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2024-11-19 14:09:20,010 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -13 predicate places. [2024-11-19 14:09:20,011 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2024-11-19 14:09:20,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-11-19 14:09:20,015 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2024-11-19 14:09:20,015 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2024-11-19 14:09:20,015 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2024-11-19 14:09:20,016 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2024-11-19 14:09:20,016 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2024-11-19 14:09:20,016 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2024-11-19 14:09:20,016 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2024-11-19 14:09:20,016 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2024-11-19 14:09:20,016 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2024-11-19 14:09:20,016 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2024-11-19 14:09:20,016 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2024-11-19 14:09:20,016 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2024-11-19 14:09:20,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 14:09:20,220 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 [2024-11-19 14:09:20,221 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-11-19 14:09:20,226 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 14:09:20,226 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 14:09:20,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:09:20 BasicIcfg [2024-11-19 14:09:20,232 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 14:09:20,232 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 14:09:20,232 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 14:09:20,233 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 14:09:20,233 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:09:16" (3/4) ... [2024-11-19 14:09:20,237 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 14:09:20,240 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-19 14:09:20,240 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-19 14:09:20,244 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 79 nodes and edges [2024-11-19 14:09:20,244 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-11-19 14:09:20,244 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-19 14:09:20,245 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-19 14:09:20,338 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 14:09:20,338 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 14:09:20,338 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 14:09:20,339 INFO L158 Benchmark]: Toolchain (without parser) took 4477.31ms. Allocated memory was 159.4MB in the beginning and 201.3MB in the end (delta: 41.9MB). Free memory was 87.1MB in the beginning and 90.4MB in the end (delta: -3.4MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2024-11-19 14:09:20,339 INFO L158 Benchmark]: CDTParser took 0.99ms. Allocated memory is still 159.4MB. Free memory is still 110.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 14:09:20,339 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.05ms. Allocated memory is still 159.4MB. Free memory was 86.8MB in the beginning and 73.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-19 14:09:20,340 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.14ms. Allocated memory is still 159.4MB. Free memory was 73.7MB in the beginning and 71.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 14:09:20,340 INFO L158 Benchmark]: Boogie Preprocessor took 50.79ms. Allocated memory is still 159.4MB. Free memory was 71.6MB in the beginning and 69.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 14:09:20,340 INFO L158 Benchmark]: RCFGBuilder took 693.08ms. Allocated memory was 159.4MB in the beginning and 201.3MB in the end (delta: 41.9MB). Free memory was 69.5MB in the beginning and 147.0MB in the end (delta: -77.5MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. [2024-11-19 14:09:20,340 INFO L158 Benchmark]: TraceAbstraction took 3300.58ms. Allocated memory is still 201.3MB. Free memory was 145.9MB in the beginning and 94.6MB in the end (delta: 51.3MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2024-11-19 14:09:20,340 INFO L158 Benchmark]: Witness Printer took 106.08ms. Allocated memory is still 201.3MB. Free memory was 94.6MB in the beginning and 90.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 14:09:20,345 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.99ms. Allocated memory is still 159.4MB. Free memory is still 110.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.05ms. Allocated memory is still 159.4MB. Free memory was 86.8MB in the beginning and 73.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.14ms. Allocated memory is still 159.4MB. Free memory was 73.7MB in the beginning and 71.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.79ms. Allocated memory is still 159.4MB. Free memory was 71.6MB in the beginning and 69.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 693.08ms. Allocated memory was 159.4MB in the beginning and 201.3MB in the end (delta: 41.9MB). Free memory was 69.5MB in the beginning and 147.0MB in the end (delta: -77.5MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3300.58ms. Allocated memory is still 201.3MB. Free memory was 145.9MB in the beginning and 94.6MB in the end (delta: 51.3MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Witness Printer took 106.08ms. Allocated memory is still 201.3MB. Free memory was 94.6MB in the beginning and 90.4MB in the end (delta: 4.2MB). 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: 3.2s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 65 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 53 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 369 IncrementalHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 6 mSDtfsCounter, 369 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=4, InterpolantAutomatonStates: 31, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 88 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 317 SizeOfPredicates, 9 NumberOfNonLiveVariables, 302 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 69/105 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! [2024-11-19 14:09:20,367 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